Mercurial > cpython-lru_cache-weakref

annotate Lib/SimpleHTTPServer.py @ 17581:c1937faabb23 2.1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added support for optional explanation parameter to the \versionadded macro. Refactored do_cmd_versionadded() and do_cmd_versionchanged() to do most of the work in a helper function, with the do_cmd_*() wrappers just supplying a portion of the replacement text.
author Fred Drake <fdrake@acm.org>
date Wed, 18 Apr 2001 17:29:14 +0000
parents c87fdf7de0e6
children 27f36f4bf525
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1 """Simple HTTP Server.
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2
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3 This module builds on BaseHTTPServer by implementing the standard GET
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4 and HEAD requests in a fairly straightforward manner.
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5
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6 """
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7
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8
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9 __version__ = "0.6"
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10
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11 __all__ = ["SimpleHTTPRequestHandler"]
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12
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13 import os
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14 import posixpath
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15 import BaseHTTPServer
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16 import urllib
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17 import cgi
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18 import shutil
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19 import mimetypes
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20 from StringIO import StringIO
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21
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22
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23 class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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24
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25 """Simple HTTP request handler with GET and HEAD commands.
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26
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27 This serves files from the current directory and any of its
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28 subdirectories. It assumes that all files are plain text files
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29 unless they have the extension ".html" in which case it assumes
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30 they are HTML files.
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31
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32 The GET and HEAD requests are identical except that the HEAD
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33 request omits the actual contents of the file.
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34
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35 """
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36
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37 server_version = "SimpleHTTP/" + __version__
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38
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39 def do_GET(self):
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40 """Serve a GET request."""
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41 f = self.send_head()
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42 if f:
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43 self.copyfile(f, self.wfile)
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44 f.close()
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45
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46 def do_HEAD(self):
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47 """Serve a HEAD request."""
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48 f = self.send_head()
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49 if f:
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50 f.close()
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51
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52 def send_head(self):
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53 """Common code for GET and HEAD commands.
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54
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55 This sends the response code and MIME headers.
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56
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57 Return value is either a file object (which has to be copied
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58 to the outputfile by the caller unless the command was HEAD,
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59 and must be closed by the caller under all circumstances), or
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60 None, in which case the caller has nothing further to do.
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61
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62 """
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63 path = self.translate_path(self.path)
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64 f = None
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65 if os.path.isdir(path):
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66 for index in "index.html", "index.htm":
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67 index = os.path.join(path, index)
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68 if os.path.exists(index):
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69 path = index
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70 break
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71 else:
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72 return self.list_directory(path)
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73 ctype = self.guess_type(path)
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74 if ctype.startswith('text/'):
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75 mode = 'r'
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76 else:
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77 mode = 'rb'
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78 try:
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79 f = open(path, mode)
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80 except IOError:
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81 self.send_error(404, "File not found")
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82 return None
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83 self.send_response(200)
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84 self.send_header("Content-type", ctype)
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85 self.end_headers()
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86 return f
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87
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88 def list_directory(self, path):
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89 """Helper to produce a directory listing (absent index.html).
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90
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91 Return value is either a file object, or None (indicating an
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92 error). In either case, the headers are sent, making the
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93 interface the same as for send_head().
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94
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95 """
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96 try:
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97 list = os.listdir(path)
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98 except os.error:
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99 self.send_error(404, "No permission to list directory")
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100 return None
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101 list.sort(lambda a, b: cmp(a.lower(), b.lower()))
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102 f = StringIO()
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103 f.write("<title>Directory listing for %s</title>\n" % self.path)
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104 f.write("<h2>Directory listing for %s</h2>\n" % self.path)
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105 f.write("<hr>\n<ul>\n")
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106 for name in list:
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107 fullname = os.path.join(path, name)
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108 displayname = linkname = name = cgi.escape(name)
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109 # Append / for directories or @ for symbolic links
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110 if os.path.isdir(fullname):
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111 displayname = name + "/"
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112 linkname = name + "/"
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113 if os.path.islink(fullname):
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114 displayname = name + "@"
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115 # Note: a link to a directory displays with @ and links with /
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116 f.write('<li><a href="%s">%s</a>\n' % (linkname, displayname))
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117 f.write("</ul>\n<hr>\n")
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118 f.seek(0)
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119 self.send_response(200)
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120 self.send_header("Content-type", "text/html")
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121 self.end_headers()
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122 return f
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123
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124 def translate_path(self, path):
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125 """Translate a /-separated PATH to the local filename syntax.
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126
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127 Components that mean special things to the local file system
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128 (e.g. drive or directory names) are ignored. (XXX They should
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129 probably be diagnosed.)
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130
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131 """
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132 path = posixpath.normpath(urllib.unquote(path))
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133 words = path.split('/')
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134 words = filter(None, words)
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135 path = os.getcwd()
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136 for word in words:
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137 drive, word = os.path.splitdrive(word)
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138 head, word = os.path.split(word)
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139 if word in (os.curdir, os.pardir): continue
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140 path = os.path.join(path, word)
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141 return path
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142
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143 def copyfile(self, source, outputfile):
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144 """Copy all data between two file objects.
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145
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146 The SOURCE argument is a file object open for reading
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147 (or anything with a read() method) and the DESTINATION
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148 argument is a file object open for writing (or
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149 anything with a write() method).
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150
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151 The only reason for overriding this would be to change
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152 the block size or perhaps to replace newlines by CRLF
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153 -- note however that this the default server uses this
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154 to copy binary data as well.
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155
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156 """
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157 shutil.copyfileobj(source, outputfile)
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158
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159 def guess_type(self, path):
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160 """Guess the type of a file.
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161
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162 Argument is a PATH (a filename).
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163
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164 Return value is a string of the form type/subtype,
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165 usable for a MIME Content-type header.
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166
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167 The default implementation looks the file's extension
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168 up in the table self.extensions_map, using text/plain
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169 as a default; however it would be permissible (if
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170 slow) to look inside the data to make a better guess.
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171
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172 """
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173
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174 base, ext = posixpath.splitext(path)
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175 if self.extensions_map.has_key(ext):
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176 return self.extensions_map[ext]
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177 ext = ext.lower()
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178 if self.extensions_map.has_key(ext):
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179 return self.extensions_map[ext]
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180 else:
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181 return self.extensions_map['']
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182
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183 extensions_map = mimetypes.types_map.copy()
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184 extensions_map.update({
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185 '': 'application/octet-stream', # Default
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186 '.py': 'text/plain',
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187 '.c': 'text/plain',
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188 '.h': 'text/plain',
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189 })
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190
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191
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192 def test(HandlerClass = SimpleHTTPRequestHandler,
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193 ServerClass = BaseHTTPServer.HTTPServer):
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194 BaseHTTPServer.test(HandlerClass, ServerClass)
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195
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196
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197 if __name__ == '__main__':
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198 test()