Mercurial > cpython-lru_cache-weakref

annotate Lib/SimpleHTTPServer.py @ 13163:a09e8635534d legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Don't try to guess the name of a .def file -- if one is supplied, use it, otherwise just generate an '/export:' option.
author Greg Ward <gward@python.net>
date Thu, 29 Jun 2000 23:09:20 +0000
parents 2b498837cd85
children 98d8169563e7
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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__ = "0.4"
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10
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11
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12 import os
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13 import string
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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 from StringIO import StringIO
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19
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20
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21 class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
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22
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23 """Simple HTTP request handler with GET and HEAD commands.
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24
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25 This serves files from the current directory and any of its
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26 subdirectories. It assumes that all files are plain text files
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27 unless they have the extension ".html" in which case it assumes
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28 they are HTML files.
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29
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30 The GET and HEAD requests are identical except that the HEAD
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31 request omits the actual contents of the file.
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32
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33 """
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34
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35 server_version = "SimpleHTTP/" + __version__
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36
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37 def do_GET(self):
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38 """Serve a GET request."""
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39 f = self.send_head()
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40 if f:
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41 self.copyfile(f, self.wfile)
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42 f.close()
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43
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44 def do_HEAD(self):
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45 """Serve a HEAD request."""
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46 f = self.send_head()
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47 if f:
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48 f.close()
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49
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50 def send_head(self):
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51 """Common code for GET and HEAD commands.
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52
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53 This sends the response code and MIME headers.
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54
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55 Return value is either a file object (which has to be copied
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56 to the outputfile by the caller unless the command was HEAD,
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57 and must be closed by the caller under all circumstances), or
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58 None, in which case the caller has nothing further to do.
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59
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60 """
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61 path = self.translate_path(self.path)
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62 f = None
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63 if os.path.isdir(path):
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64 for index in "index.html", "index.htm":
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65 index = os.path.join(path, index)
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66 if os.path.exists(index):
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67 path = index
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68 break
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69 else:
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70 return self.list_directory(path)
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71 ctype = self.guess_type(path)
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72 if ctype.startswith('text/'):
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73 mode = 'r'
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74 else:
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75 mode = 'rb'
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76 try:
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77 f = open(path, mode)
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78 except IOError:
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79 self.send_error(404, "File not found")
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80 return None
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81 self.send_response(200)
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82 self.send_header("Content-type", ctype)
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83 self.end_headers()
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84 return f
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85
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86 def list_directory(self, path):
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87 """Helper to produce a directory listing (absent index.html).
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88
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89 Return value is either a file object, or None (indicating an
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90 error). In either case, the headers are sent, making the
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91 interface the same as for send_head().
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92
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93 """
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94 try:
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95 list = os.listdir(path)
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96 except os.error:
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97 self.send_error(404, "No permission to list directory");
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98 return None
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99 list.sort(lambda a, b: cmp(a.lower(), b.lower()))
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100 f = StringIO()
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101 f.write("<h2>Directory listing for %s</h2>\n" % self.path)
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102 f.write("<hr>\n<ul>\n")
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103 for name in list:
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104 fullname = os.path.join(path, name)
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105 displayname = linkname = name = cgi.escape(name)
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106 # Append / for directories or @ for symbolic links
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107 if os.path.isdir(fullname):
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108 displayname = name + "/"
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109 linkname = name + os.sep
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110 if os.path.islink(fullname):
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111 displayname = name + "@"
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112 # Note: a link to a directory displays with @ and links with /
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113 f.write('<li><a href="%s">%s</a>\n' % (linkname, displayname))
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114 f.write("</ul>\n<hr>\n")
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115 f.seek(0)
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116 self.send_response(200)
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117 self.send_header("Content-type", "text/html")
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118 self.end_headers()
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119 return f
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120
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121 def translate_path(self, path):
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122 """Translate a /-separated PATH to the local filename syntax.
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123
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124 Components that mean special things to the local file system
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125 (e.g. drive or directory names) are ignored. (XXX They should
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126 probably be diagnosed.)
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127
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128 """
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129 path = posixpath.normpath(urllib.unquote(path))
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130 words = string.splitfields(path, '/')
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131 words = filter(None, words)
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132 path = os.getcwd()
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133 for word in words:
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134 drive, word = os.path.splitdrive(word)
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135 head, word = os.path.split(word)
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136 if word in (os.curdir, os.pardir): continue
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137 path = os.path.join(path, word)
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138 return path
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139
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140 def copyfile(self, source, outputfile):
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141 """Copy all data between two file objects.
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142
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143 The SOURCE argument is a file object open for reading
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144 (or anything with a read() method) and the DESTINATION
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145 argument is a file object open for writing (or
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146 anything with a write() method).
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147
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148 The only reason for overriding this would be to change
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149 the block size or perhaps to replace newlines by CRLF
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150 -- note however that this the default server uses this
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151 to copy binary data as well.
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152
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153 """
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154
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155 BLOCKSIZE = 8192
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156 while 1:
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157 data = source.read(BLOCKSIZE)
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158 if not data: break
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159 outputfile.write(data)
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160
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161 def guess_type(self, path):
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162 """Guess the type of a file.
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163
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164 Argument is a PATH (a filename).
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165
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166 Return value is a string of the form type/subtype,
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167 usable for a MIME Content-type header.
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168
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169 The default implementation looks the file's extension
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170 up in the table self.extensions_map, using text/plain
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171 as a default; however it would be permissible (if
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172 slow) to look inside the data to make a better guess.
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173
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174 """
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175
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176 base, ext = posixpath.splitext(path)
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177 if self.extensions_map.has_key(ext):
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178 return self.extensions_map[ext]
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179 ext = string.lower(ext)
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180 if self.extensions_map.has_key(ext):
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181 return self.extensions_map[ext]
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182 else:
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183 return self.extensions_map['']
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184
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185 extensions_map = {
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186 '': 'text/plain', # Default, *must* be present
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187 '.html': 'text/html',
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188 '.htm': 'text/html',
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189 '.gif': 'image/gif',
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190 '.jpg': 'image/jpeg',
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191 '.jpeg': 'image/jpeg',
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192 }
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193
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194
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195 def test(HandlerClass = SimpleHTTPRequestHandler,
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196 ServerClass = BaseHTTPServer.HTTPServer):
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197 BaseHTTPServer.test(HandlerClass, ServerClass)
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198
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199
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200 if __name__ == '__main__':
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201 test()