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annotate mercurial/pycompat.py @ 29800:178c89e8519a

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py3: import builtin wrappers automagically by code transformer This should be less invasive than mucking builtins. Since tokenize.untokenize() looks start/end positions of tokens, we calculates them from the NEWLINE token of the future import.
author Yuya Nishihara <yuya@tcha.org>
date Tue, 16 Aug 2016 12:35:15 +0900
parents 45fa8de47a0f
children c63ab0524db7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # pycompat.py - portability shim for python 3
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2 #
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3 # This software may be used and distributed according to the terms of the
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4 # GNU General Public License version 2 or any later version.
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5
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6 """Mercurial portability shim for python 3.
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7
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8 This contains aliases to hide python version-specific details from the core.
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9 """
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10
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11 from __future__ import absolute_import
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12
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13 import sys
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14
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15 if sys.version_info[0] < 3:
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16 import cPickle as pickle
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17 import cStringIO as io
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18 import httplib
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19 import Queue as _queue
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20 import SocketServer as socketserver
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21 import urlparse
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22 import xmlrpclib
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23 else:
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24 import http.client as httplib
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25 import io
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26 import pickle
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27 import queue as _queue
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28 import socketserver
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29 import urllib.parse as urlparse
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30 import xmlrpc.client as xmlrpclib
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31
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32 if sys.version_info[0] >= 3:
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33 import builtins
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34 import functools
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35
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36 def _wrapattrfunc(f):
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37 @functools.wraps(f)
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38 def w(object, name, *args):
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39 if isinstance(name, bytes):
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40 name = name.decode(u'utf-8')
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41 return f(object, name, *args)
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42 return w
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43
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44 # these wrappers are automagically imported by hgloader
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45 delattr = _wrapattrfunc(builtins.delattr)
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46 getattr = _wrapattrfunc(builtins.getattr)
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47 hasattr = _wrapattrfunc(builtins.hasattr)
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48 setattr = _wrapattrfunc(builtins.setattr)
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49 xrange = builtins.range
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50
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51 stringio = io.StringIO
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52 empty = _queue.Empty
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53 queue = _queue.Queue
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54
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55 class _pycompatstub(object):
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56 pass
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57
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58 def _alias(alias, origin, items):
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59 """ populate a _pycompatstub
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60
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61 copies items from origin to alias
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62 """
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63 for item in items:
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64 try:
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65 lcase = item.replace('_', '').lower()
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66 setattr(alias, lcase, getattr(origin, item))
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67 except AttributeError:
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68 pass
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69
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70 httpserver = _pycompatstub()
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71 urlreq = _pycompatstub()
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72 urlerr = _pycompatstub()
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73 try:
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74 import BaseHTTPServer
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75 import CGIHTTPServer
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76 import SimpleHTTPServer
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77 import urllib2
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78 import urllib
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79 _alias(urlreq, urllib, (
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80 "addclosehook",
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81 "addinfourl",
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82 "ftpwrapper",
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83 "pathname2url",
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84 "quote",
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85 "splitattr",
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86 "splitpasswd",
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87 "splitport",
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88 "splituser",
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89 "unquote",
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90 "url2pathname",
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91 "urlencode",
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92 ))
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93 _alias(urlreq, urllib2, (
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94 "AbstractHTTPHandler",
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95 "BaseHandler",
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96 "build_opener",
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97 "FileHandler",
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98 "FTPHandler",
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99 "HTTPBasicAuthHandler",
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100 "HTTPDigestAuthHandler",
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101 "HTTPHandler",
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102 "HTTPPasswordMgrWithDefaultRealm",
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103 "HTTPSHandler",
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104 "install_opener",
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105 "ProxyHandler",
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106 "Request",
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107 "urlopen",
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108 ))
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109 _alias(urlerr, urllib2, (
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110 "HTTPError",
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111 "URLError",
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112 ))
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113 _alias(httpserver, BaseHTTPServer, (
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114 "HTTPServer",
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115 "BaseHTTPRequestHandler",
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116 ))
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117 _alias(httpserver, SimpleHTTPServer, (
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118 "SimpleHTTPRequestHandler",
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119 ))
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120 _alias(httpserver, CGIHTTPServer, (
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121 "CGIHTTPRequestHandler",
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122 ))
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123
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124 except ImportError:
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125 import urllib.request
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126 _alias(urlreq, urllib.request, (
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127 "AbstractHTTPHandler",
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128 "addclosehook",
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129 "addinfourl",
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130 "BaseHandler",
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131 "build_opener",
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132 "FileHandler",
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133 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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134 "ftpwrapper",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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135 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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136 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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137 "install_opener",
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timeless <timeless@mozdev.org>
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138 "pathname2url",
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timeless <timeless@mozdev.org>
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139 "HTTPBasicAuthHandler",
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timeless <timeless@mozdev.org>
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140 "HTTPDigestAuthHandler",
29414
2646fbba4ca7 pycompat: add HTTPPasswordMgrWithDefaultRealm to Python 3 block
Gregory Szorc <gregory.szorc@gmail.com>
parents: 29405
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141 "HTTPPasswordMgrWithDefaultRealm",
28882
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timeless <timeless@mozdev.org>
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142 "ProxyHandler",
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timeless <timeless@mozdev.org>
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143 "quote",
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timeless <timeless@mozdev.org>
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144 "Request",
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timeless <timeless@mozdev.org>
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145 "splitattr",
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timeless <timeless@mozdev.org>
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146 "splitpasswd",
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timeless <timeless@mozdev.org>
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147 "splitport",
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timeless <timeless@mozdev.org>
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148 "splituser",
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timeless <timeless@mozdev.org>
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149 "unquote",
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timeless <timeless@mozdev.org>
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150 "url2pathname",
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timeless <timeless@mozdev.org>
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151 "urlopen",
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timeless <timeless@mozdev.org>
parents: 28835
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152 ))
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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153 import urllib.error
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timeless <timeless@mozdev.org>
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154 _alias(urlerr, urllib.error, (
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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155 "HTTPError",
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timeless <timeless@mozdev.org>
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156 "URLError",
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timeless <timeless@mozdev.org>
parents: 28835
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157 ))
29566
075146e85bb6 py3: conditionalize BaseHTTPServer, SimpleHTTPServer and CGIHTTPServer import
Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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158 import http.server
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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159 _alias(httpserver, http.server, (
075146e85bb6 py3: conditionalize BaseHTTPServer, SimpleHTTPServer and CGIHTTPServer import
Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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160 "HTTPServer",
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Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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161 "BaseHTTPRequestHandler",
075146e85bb6 py3: conditionalize BaseHTTPServer, SimpleHTTPServer and CGIHTTPServer import
Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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162 "SimpleHTTPRequestHandler",
075146e85bb6 py3: conditionalize BaseHTTPServer, SimpleHTTPServer and CGIHTTPServer import
Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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163 "CGIHTTPRequestHandler",
075146e85bb6 py3: conditionalize BaseHTTPServer, SimpleHTTPServer and CGIHTTPServer import
Pulkit Goyal <7895pulkit@gmail.com>
parents: 29455
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164 ))