Mercurial > cpython-lru_cache-weakref

annotate Lib/ConfigParser.py @ 15842:f6cd36498a50 legacy-trunk

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Document extensions to .pth files.
author Martin v. Löwis <martin@v.loewis.de>
date Sat, 13 Jan 2001 09:54:41 +0000
parents 55f4a6e8b5b3
children f5a3d98a35bc
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1 """Configuration file parser.
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2
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3 A setup file consists of sections, lead by a "[section]" header,
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4 and followed by "name: value" entries, with continuations and such in
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5 the style of RFC 822.
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6
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7 The option values can contain format strings which refer to other values in
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8 the same section, or values in a special [DEFAULT] section.
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9
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10 For example:
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11
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12 something: %(dir)s/whatever
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13
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14 would resolve the "%(dir)s" to the value of dir. All reference
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15 expansions are done late, on demand.
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16
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17 Intrinsic defaults can be specified by passing them into the
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18 ConfigParser constructor as a dictionary.
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19
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20 class:
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21
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22 ConfigParser -- responsible for for parsing a list of
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23 configuration files, and managing the parsed database.
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24
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25 methods:
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26
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27 __init__(defaults=None)
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28 create the parser and specify a dictionary of intrinsic defaults. The
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29 keys must be strings, the values must be appropriate for %()s string
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30 interpolation. Note that `__name__' is always an intrinsic default;
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31 it's value is the section's name.
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32
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33 sections()
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34 return all the configuration section names, sans DEFAULT
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35
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36 has_section(section)
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37 return whether the given section exists
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38
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39 has_option(section, option)
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40 return whether the given option exists in the given section
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41
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42 options(section)
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43 return list of configuration options for the named section
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44
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45 has_option(section, option)
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46 return whether the given section has the given option
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47
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48 read(filenames)
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49 read and parse the list of named configuration files, given by
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50 name. A single filename is also allowed. Non-existing files
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51 are ignored.
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52
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53 readfp(fp, filename=None)
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54 read and parse one configuration file, given as a file object.
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55 The filename defaults to fp.name; it is only used in error
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56 messages (if fp has no `name' attribute, the string `<???>' is used).
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57
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58 get(section, option, raw=0, vars=None)
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59 return a string value for the named option. All % interpolations are
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60 expanded in the return values, based on the defaults passed into the
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61 constructor and the DEFAULT section. Additional substitutions may be
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62 provided using the `vars' argument, which must be a dictionary whose
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63 contents override any pre-existing defaults.
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65 getint(section, options)
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66 like get(), but convert value to an integer
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67
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68 getfloat(section, options)
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69 like get(), but convert value to a float
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70
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71 getboolean(section, options)
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72 like get(), but convert value to a boolean (currently defined as 0 or
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73 1, only)
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74
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75 remove_section(section)
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76 remove the given file section and all its options
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77
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78 remove_option(section, option)
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79 remove the given option from the given section
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80
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81 set(section, option, value)
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82 set the given option
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83
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84 write(fp)
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85 write the configuration state in .ini format
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86 """
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87
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88 import sys
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89 import string
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90 import re
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91
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92 DEFAULTSECT = "DEFAULT"
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93
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94 MAX_INTERPOLATION_DEPTH = 10
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95
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96
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97
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98 # exception classes
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99 class Error(Exception):
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100 def __init__(self, msg=''):
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101 self._msg = msg
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102 Exception.__init__(self, msg)
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103 def __repr__(self):
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104 return self._msg
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105 __str__ = __repr__
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106
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107 class NoSectionError(Error):
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108 def __init__(self, section):
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109 Error.__init__(self, 'No section: %s' % section)
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110 self.section = section
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111
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112 class DuplicateSectionError(Error):
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113 def __init__(self, section):
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114 Error.__init__(self, "Section %s already exists" % section)
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115 self.section = section
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116
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117 class NoOptionError(Error):
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118 def __init__(self, option, section):
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119 Error.__init__(self, "No option `%s' in section: %s" %
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120 (option, section))
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121 self.option = option
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122 self.section = section
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123
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124 class InterpolationError(Error):
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125 def __init__(self, reference, option, section, rawval):
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126 Error.__init__(self,
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127 "Bad value substitution:\n"
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128 "\tsection: [%s]\n"
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129 "\toption : %s\n"
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130 "\tkey : %s\n"
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131 "\trawval : %s\n"
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132 % (section, option, reference, rawval))
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133 self.reference = reference
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134 self.option = option
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135 self.section = section
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136
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137 class InterpolationDepthError(Error):
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138 def __init__(self, option, section, rawval):
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139 Error.__init__(self,
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140 "Value interpolation too deeply recursive:\n"
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141 "\tsection: [%s]\n"
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142 "\toption : %s\n"
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143 "\trawval : %s\n"
606a80834a86 Allow spaces in section names.
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144 % (section, option, rawval))
606a80834a86 Allow spaces in section names.
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145 self.option = option
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146 self.section = section
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147
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148 class ParsingError(Error):
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149 def __init__(self, filename):
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diff changeset
150 Error.__init__(self, 'File contains parsing errors: %s' % filename)
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151 self.filename = filename
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152 self.errors = []
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153
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154 def append(self, lineno, line):
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diff changeset
155 self.errors.append((lineno, line))
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156 self._msg = self._msg + '\n\t[line %2d]: %s' % (lineno, line)
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157
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diff changeset
158 class MissingSectionHeaderError(ParsingError):
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159 def __init__(self, filename, lineno, line):
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160 Error.__init__(
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diff changeset
161 self,
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diff changeset
162 'File contains no section headers.\nfile: %s, line: %d\n%s' %
606a80834a86 Allow spaces in section names.
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diff changeset
163 (filename, lineno, line))
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164 self.filename = filename
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165 self.lineno = lineno
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166 self.line = line
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167
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parents:
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168
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169
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170 class ConfigParser:
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171 def __init__(self, defaults=None):
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172 self.__sections = {}
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173 if defaults is None:
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174 self.__defaults = {}
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175 else:
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176 self.__defaults = defaults
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diff changeset
177
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178 def defaults(self):
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179 return self.__defaults
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180
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181 def sections(self):
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182 """Return a list of section names, excluding [DEFAULT]"""
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183 # self.__sections will never have [DEFAULT] in it
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184 return self.__sections.keys()
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185
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186 def add_section(self, section):
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187 """Create a new section in the configuration.
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diff changeset
188
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189 Raise DuplicateSectionError if a section by the specified name
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diff changeset
190 already exists.
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191 """
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192 if self.__sections.has_key(section):
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193 raise DuplicateSectionError(section)
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194 self.__sections[section] = {}
6795
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diff changeset
195
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diff changeset
196 def has_section(self, section):
7755
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diff changeset
197 """Indicate whether the named section is present in the configuration.
6795
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parents:
diff changeset
198
7755
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diff changeset
199 The DEFAULT section is not acknowledged.
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diff changeset
200 """
14899
606a80834a86 Allow spaces in section names.
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diff changeset
201 return section in self.sections()
6795
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parents:
diff changeset
202
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
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diff changeset
203 def options(self, section):
11370
41990bce023a Added has_option(); fix bug in get() which botched interpolation if
Guido van Rossum <guido@python.org>
parents: 11369
diff changeset
204 """Return a list of option names for the given section name."""
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
205 try:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
206 opts = self.__sections[section].copy()
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diff changeset
207 except KeyError:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
208 raise NoSectionError(section)
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diff changeset
209 opts.update(self.__defaults)
14899
606a80834a86 Allow spaces in section names.
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diff changeset
210 if opts.has_key('__name__'):
606a80834a86 Allow spaces in section names.
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diff changeset
211 del opts['__name__']
7755
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diff changeset
212 return opts.keys()
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
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parents:
diff changeset
213
11370
41990bce023a Added has_option(); fix bug in get() which botched interpolation if
Guido van Rossum <guido@python.org>
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diff changeset
214 def has_option(self, section, option):
41990bce023a Added has_option(); fix bug in get() which botched interpolation if
Guido van Rossum <guido@python.org>
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diff changeset
215 """Return whether the given section has the given option."""
14899
606a80834a86 Allow spaces in section names.
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diff changeset
216 return option in self.options(section)
11370
41990bce023a Added has_option(); fix bug in get() which botched interpolation if
Guido van Rossum <guido@python.org>
parents: 11369
diff changeset
217
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
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parents:
diff changeset
218 def read(self, filenames):
11369
29ce956fa7b7 Urmpfh!
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diff changeset
219 """Read and parse a filename or a list of filenames.
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
220
29ce956fa7b7 Urmpfh!
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diff changeset
221 Files that cannot be opened are silently ignored; this is
11381
4ad14e4dc7e5 fixed a typo in a docstring, and slightly expanded the module
Barry Warsaw <barry@python.org>
parents: 11370
diff changeset
222 designed so that you can specify a list of potential
11369
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
223 configuration file locations (e.g. current directory, user's
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
224 home directory, systemwide directory), and all existing
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
225 configuration files in the list will be read. A single
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
226 filename may also be given.
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
227 """
12632
34d2b50eff2e ConfigParser.read():
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parents: 11908
diff changeset
228 if type(filenames) in [type(''), type(u'')]:
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
229 filenames = [filenames]
11369
29ce956fa7b7 Urmpfh!
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diff changeset
230 for filename in filenames:
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
231 try:
29ce956fa7b7 Urmpfh!
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diff changeset
232 fp = open(filename)
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
233 except IOError:
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
234 continue
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
235 self.__read(fp, filename)
11368
b9bbe88d9554 ConfigParser.read(): Don't mask IOError exceptions.
Fred Drake <fdrake@acm.org>
parents: 11007
diff changeset
236 fp.close()
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
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parents:
diff changeset
237
11369
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diff changeset
238 def readfp(self, fp, filename=None):
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
239 """Like read() but the argument must be a file-like object.
29ce956fa7b7 Urmpfh!
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diff changeset
240
29ce956fa7b7 Urmpfh!
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diff changeset
241 The `fp' argument must have a `readline' method. Optional
29ce956fa7b7 Urmpfh!
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diff changeset
242 second argument is the `filename', which if not given, is
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
243 taken from fp.name. If fp has no `name' attribute, `<???>' is
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
244 used.
29ce956fa7b7 Urmpfh!
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diff changeset
245
29ce956fa7b7 Urmpfh!
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diff changeset
246 """
29ce956fa7b7 Urmpfh!
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diff changeset
247 if filename is None:
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
248 try:
29ce956fa7b7 Urmpfh!
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diff changeset
249 filename = fp.name
29ce956fa7b7 Urmpfh!
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parents: 11368
diff changeset
250 except AttributeError:
29ce956fa7b7 Urmpfh!
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diff changeset
251 filename = '<???>'
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diff changeset
252 self.__read(fp, filename)
29ce956fa7b7 Urmpfh!
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diff changeset
253
9959
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
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diff changeset
254 def get(self, section, option, raw=0, vars=None):
7755
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diff changeset
255 """Get an option value for a given section.
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
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parents:
diff changeset
256
9961
879e3491b661 Re-format the module docstring and document the new get() argument.
Barry Warsaw <barry@python.org>
parents: 9959
diff changeset
257 All % interpolations are expanded in the return values, based on the
879e3491b661 Re-format the module docstring and document the new get() argument.
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diff changeset
258 defaults passed into the constructor, unless the optional argument
879e3491b661 Re-format the module docstring and document the new get() argument.
Barry Warsaw <barry@python.org>
parents: 9959
diff changeset
259 `raw' is true. Additional substitutions may be provided using the
879e3491b661 Re-format the module docstring and document the new get() argument.
Barry Warsaw <barry@python.org>
parents: 9959
diff changeset
260 `vars' argument, which must be a dictionary whose contents overrides
879e3491b661 Re-format the module docstring and document the new get() argument.
Barry Warsaw <barry@python.org>
parents: 9959
diff changeset
261 any pre-existing defaults.
6795
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Guido van Rossum <guido@python.org>
parents:
diff changeset
262
7755
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diff changeset
263 The section DEFAULT is special.
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diff changeset
264 """
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diff changeset
265 try:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
266 sectdict = self.__sections[section].copy()
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diff changeset
267 except KeyError:
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Guido van Rossum <guido@python.org>
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diff changeset
268 if section == DEFAULTSECT:
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parents: 7165
diff changeset
269 sectdict = {}
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diff changeset
270 else:
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parents: 7165
diff changeset
271 raise NoSectionError(section)
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
272 d = self.__defaults.copy()
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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diff changeset
273 d.update(sectdict)
9959
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
274 # Update with the entry specific variables
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
275 if vars:
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
276 d.update(vars)
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
277 option = self.optionxform(option)
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
278 try:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
279 rawval = d[option]
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parents: 7165
diff changeset
280 except KeyError:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
281 raise NoOptionError(option, section)
14899
606a80834a86 Allow spaces in section names.
Fred Drake <fdrake@acm.org>
parents: 14840
diff changeset
282
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
283 if raw:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
284 return rawval
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
285
14899
606a80834a86 Allow spaces in section names.
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parents: 14840
diff changeset
286 # do the string interpolation
9959
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
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parents: 8853
diff changeset
287 value = rawval # Make it a pretty variable name
10145
8284927025be Fix by Chris Petrilli (to his own code) to limit the number of
Guido van Rossum <guido@python.org>
parents: 10037
diff changeset
288 depth = 0
8284927025be Fix by Chris Petrilli (to his own code) to limit the number of
Guido van Rossum <guido@python.org>
parents: 10037
diff changeset
289 while depth < 10: # Loop through this until it's done
8284927025be Fix by Chris Petrilli (to his own code) to limit the number of
Guido van Rossum <guido@python.org>
parents: 10037
diff changeset
290 depth = depth + 1
11370
41990bce023a Added has_option(); fix bug in get() which botched interpolation if
Guido van Rossum <guido@python.org>
parents: 11369
diff changeset
291 if string.find(value, "%(") >= 0:
9959
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
292 try:
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
293 value = value % d
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
294 except KeyError, key:
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
295 raise InterpolationError(key, option, section, rawval)
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
296 else:
14899
606a80834a86 Allow spaces in section names.
Fred Drake <fdrake@acm.org>
parents: 14840
diff changeset
297 break
606a80834a86 Allow spaces in section names.
Fred Drake <fdrake@acm.org>
parents: 14840
diff changeset
298 if value.find("%(") >= 0:
606a80834a86 Allow spaces in section names.
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parents: 14840
diff changeset
299 raise InterpolationDepthError(option, section, rawval)
606a80834a86 Allow spaces in section names.
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parents: 14840
diff changeset
300 return value
9959
572e131ae369 Patch by Chris Petrilli (not really tested since I don't know this
Guido van Rossum <guido@python.org>
parents: 8853
diff changeset
301
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
302 def __get(self, section, conv, option):
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
303 return conv(self.get(section, option))
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
304
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
305 def getint(self, section, option):
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
306 return self.__get(section, string.atoi, option)
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
307
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
308 def getfloat(self, section, option):
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
309 return self.__get(section, string.atof, option)
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
310
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
311 def getboolean(self, section, option):
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
312 v = self.get(section, option)
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
313 val = string.atoi(v)
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
314 if val not in (0, 1):
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
315 raise ValueError, 'Not a boolean: %s' % v
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
diff changeset
316 return val
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
317
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
318 def optionxform(self, optionstr):
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
319 return string.lower(optionstr)
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
320
13521
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
321 def has_option(self, section, option):
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
322 """Check for the existence of a given option in a given section."""
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
323 if not section or section == "DEFAULT":
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
324 return self.__defaults.has_key(option)
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
325 elif not self.has_section(section):
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
326 return 0
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
327 else:
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
328 return self.__sections[section].has_key(option)
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
329
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
330 def set(self, section, option, value):
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
331 """Set an option."""
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
332 if not section or section == "DEFAULT":
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
333 sectdict = self.__defaults
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
334 else:
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
335 try:
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
336 sectdict = self.__sections[section]
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
337 except KeyError:
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
338 raise NoSectionError(section)
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
339 sectdict[option] = value
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
340
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
341 def write(self, fp):
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
342 """Write an .ini-format representation of the configuration state."""
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
343 if self.__defaults:
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
344 fp.write("[DEFAULT]\n")
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
345 for (key, value) in self.__defaults.items():
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
346 fp.write("%s = %s\n" % (key, value))
13521
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
347 fp.write("\n")
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
348 for section in self.sections():
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
349 fp.write("[" + section + "]\n")
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
350 sectdict = self.__sections[section]
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
351 for (key, value) in sectdict.items():
13521
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
352 if key == "__name__":
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
353 continue
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
354 fp.write("%s = %s\n" % (key, value))
13521
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
355 fp.write("\n")
4dbc75c189bc Give ConfigParser the capability to set as well as read options, and to write
Eric S. Raymond <esr@thyrsus.com>
parents: 12632
diff changeset
356
13650
3d6d218b673d Small fixes by Petru Paler (patch #100946) checked in with esr's approval.
Thomas Wouters <thomas@python.org>
parents: 13600
diff changeset
357 def remove_option(self, section, option):
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
358 """Remove an option."""
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
359 if not section or section == "DEFAULT":
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
360 sectdict = self.__defaults
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
361 else:
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
362 try:
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
363 sectdict = self.__sections[section]
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
364 except KeyError:
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
365 raise NoSectionError(section)
15479
e98964bc2681 remove_option(): Use the right variable name for the option name!
Fred Drake <fdrake@acm.org>
parents: 14899
diff changeset
366 existed = sectdict.has_key(option)
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
367 if existed:
15479
e98964bc2681 remove_option(): Use the right variable name for the option name!
Fred Drake <fdrake@acm.org>
parents: 14899
diff changeset
368 del sectdict[option]
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
369 return existed
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
370
13650
3d6d218b673d Small fixes by Petru Paler (patch #100946) checked in with esr's approval.
Thomas Wouters <thomas@python.org>
parents: 13600
diff changeset
371 def remove_section(self, section):
13600
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
372 """Remove a file section."""
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
373 if self.__sections.has_key(section):
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
374 del self.__sections[section]
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
375 return 1
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
376 else:
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
377 return 0
39f54b9a7f9c ConfigParser enhancements to edit existing configs, part 2
Eric S. Raymond <esr@thyrsus.com>
parents: 13521
diff changeset
378
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
379 #
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
380 # Regular expressions for parsing section headers and options. Note a
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
381 # slight semantic change from the previous version, because of the use
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
382 # of \w, _ is allowed in section header names.
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
383 SECTCRE = re.compile(
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
384 r'\[' # [
14899
606a80834a86 Allow spaces in section names.
Fred Drake <fdrake@acm.org>
parents: 14840
diff changeset
385 r'(?P<header>[-\w_.*,(){} ]+)' # a lot of stuff found by IvL
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
386 r'\]' # ]
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
387 )
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
388 OPTCRE = re.compile(
11875
286303f00546 Fix comments relating to the specific regexs used to parse section and
Fred Drake <fdrake@acm.org>
parents: 11873
diff changeset
389 r'(?P<option>[-\w_.*,(){}]+)' # a lot of stuff found by IvL
11873
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
390 r'[ \t]*(?P<vi>[:=])[ \t]*' # any number of space/tab,
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
391 # followed by separator
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
392 # (either : or =), followed
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
393 # by any # space/tab
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
394 r'(?P<value>.*)$' # everything up to eol
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
395 )
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
396
11369
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
397 def __read(self, fp, fpname):
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
398 """Parse a sectioned setup file.
6795
5b24cbb1f99b Checking in ConfigParser.py -- I don't see a reason why this can't be
Guido van Rossum <guido@python.org>
parents:
diff changeset
399
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
400 The sections in setup file contains a title line at the top,
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
401 indicated by a name in square brackets (`[]'), plus key/value
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
402 options lines, indicated by `name: value' format lines.
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
403 Continuation are represented by an embedded newline then
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
404 leading whitespace. Blank lines, lines beginning with a '#',
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
405 and just about everything else is ignored.
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
406 """
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
407 cursect = None # None, or a dictionary
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
408 optname = None
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
409 lineno = 0
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
410 e = None # None, or an exception
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
411 while 1:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
412 line = fp.readline()
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
413 if not line:
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
414 break
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
415 lineno = lineno + 1
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
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parents: 7165
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416 # comment or blank line?
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
417 if string.strip(line) == '' or line[0] in '#;':
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
418 continue
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
419 if string.lower(string.split(line)[0]) == 'rem' \
11873
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
420 and line[0] in "rR": # no leading whitespace
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
421 continue
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
422 # continuation line?
8614
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parents: 7755
diff changeset
423 if line[0] in ' \t' and cursect is not None and optname:
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
424 value = string.strip(line)
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
425 if value:
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
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426 cursect[optname] = cursect[optname] + '\n ' + value
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
427 # a section header or option header?
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
428 else:
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
429 # is it a section header?
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
430 mo = self.SECTCRE.match(line)
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
431 if mo:
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
432 sectname = mo.group('header')
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
433 if self.__sections.has_key(sectname):
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
434 cursect = self.__sections[sectname]
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
435 elif sectname == DEFAULTSECT:
64f0c3188e70 Several changes:
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parents: 7755
diff changeset
436 cursect = self.__defaults
64f0c3188e70 Several changes:
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parents: 7755
diff changeset
437 else:
8853
bbe9d72bccda Time machine experiment. Use '__name__' as the special key (always
Barry Warsaw <barry@python.org>
parents: 8614
diff changeset
438 cursect = {'__name__': sectname}
8614
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parents: 7755
diff changeset
439 self.__sections[sectname] = cursect
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Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
440 # So sections can't start with a continuation line
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Barry Warsaw <barry@python.org>
parents: 7755
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441 optname = None
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Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
442 # no section header in the file?
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
443 elif cursect is None:
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29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
444 raise MissingSectionHeaderError(fpname, lineno, `line`)
8614
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Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
445 # an option line?
7755
fb4b4d069cc7 Mass check-in after untabifying all files that need it.
Guido van Rossum <guido@python.org>
parents: 7165
diff changeset
446 else:
11007
b9f55cc10ab3 Patch suggested (and partially provided) by Lars Damerow: instead of
Guido van Rossum <guido@python.org>
parents: 10145
diff changeset
447 mo = self.OPTCRE.match(line)
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
448 if mo:
11873
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Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
449 optname, vi, optval = mo.group('option', 'vi', 'value')
11908
b975a056deb6 allow comments beginning with ; in key: value as well as key = value
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 11875
diff changeset
450 if vi in ('=', ':') and ';' in optval:
11873
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
451 # ';' is a comment delimiter only if it follows
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
452 # a spacing character
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
453 pos = string.find(optval, ';')
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
454 if pos and optval[pos-1] in string.whitespace:
7ed104c40db3 (Finally!) Changes related to the ConfigParser/INI-file topics
Fred Drake <fdrake@acm.org>
parents: 11381
diff changeset
455 optval = optval[:pos]
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
456 optval = string.strip(optval)
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
457 # allow empty values
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
458 if optval == '""':
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
459 optval = ''
14840
625a9a695469 When reading the file, option names were not passed through
Guido van Rossum <guido@python.org>
parents: 13650
diff changeset
460 cursect[self.optionxform(optname)] = optval
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
461 else:
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
462 # a non-fatal parsing error occurred. set up the
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
463 # exception but keep going. the exception will be
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
464 # raised at the end of the file and will contain a
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
465 # list of all bogus lines
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
466 if not e:
11369
29ce956fa7b7 Urmpfh!
Guido van Rossum <guido@python.org>
parents: 11368
diff changeset
467 e = ParsingError(fpname)
8614
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
468 e.append(lineno, `line`)
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
469 # if any parsing errors occurred, raise an exception
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
470 if e:
64f0c3188e70 Several changes:
Barry Warsaw <barry@python.org>
parents: 7755
diff changeset
471 raise e