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annotate mercurial/pycompat.py @ 30313:42af0590f4b9

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py3: add os.fsdecode() as pycompat.fsdecode() We need to use os.fsdecode() but this was not present in Python 2. So added the function in pycompat.py
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 06 Nov 2016 03:12:40 +0530
parents f6dcda7505f9
children 3874ddba1ab4
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 ispy3 = (sys.version_info[0] >= 3)
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16
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17 if not ispy3:
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18 import cPickle as pickle
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19 import cStringIO as io
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20 import httplib
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21 import Queue as _queue
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22 import SocketServer as socketserver
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23 import urlparse
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24 import xmlrpclib
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25 else:
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26 import http.client as httplib
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27 import io
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28 import pickle
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29 import queue as _queue
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30 import socketserver
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31 import urllib.parse as urlparse
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32 import xmlrpc.client as xmlrpclib
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33
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34 if ispy3:
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35 import builtins
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36 import functools
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37 import os
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38 fsencode = os.fsencode
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39 fsdecode = os.fsdecode
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40
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41 def sysstr(s):
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42 """Return a keyword str to be passed to Python functions such as
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43 getattr() and str.encode()
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44
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45 This never raises UnicodeDecodeError. Non-ascii characters are
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46 considered invalid and mapped to arbitrary but unique code points
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47 such that 'sysstr(a) != sysstr(b)' for all 'a != b'.
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48 """
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49 if isinstance(s, builtins.str):
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50 return s
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51 return s.decode(u'latin-1')
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52
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53 def _wrapattrfunc(f):
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54 @functools.wraps(f)
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55 def w(object, name, *args):
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56 return f(object, sysstr(name), *args)
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57 return w
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58
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59 # these wrappers are automagically imported by hgloader
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60 delattr = _wrapattrfunc(builtins.delattr)
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61 getattr = _wrapattrfunc(builtins.getattr)
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62 hasattr = _wrapattrfunc(builtins.hasattr)
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63 setattr = _wrapattrfunc(builtins.setattr)
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64 xrange = builtins.range
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65
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66 else:
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67 def sysstr(s):
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68 return s
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69
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70 # Partial backport from os.py in Python 3, which only accepts bytes.
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71 # In Python 2, our paths should only ever be bytes, a unicode path
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72 # indicates a bug.
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73 def fsencode(filename):
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74 if isinstance(filename, str):
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75 return filename
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76 else:
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77 raise TypeError(
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78 "expect str, not %s" % type(filename).__name__)
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79
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80 # In Python 2, fsdecode() has a very chance to receive bytes. So it's
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81 # better not to touch Python 2 part as it's already working fine.
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82 def fsdecode(filename):
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83 return filename
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84
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85 stringio = io.StringIO
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86 empty = _queue.Empty
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87 queue = _queue.Queue
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88
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89 class _pycompatstub(object):
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90 def __init__(self):
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91 self._aliases = {}
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92
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93 def _registeraliases(self, origin, items):
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94 """Add items that will be populated at the first access"""
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95 items = map(sysstr, items)
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96 self._aliases.update(
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97 (item.replace(sysstr('_'), sysstr('')).lower(), (origin, item))
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98 for item in items)
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99
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100 def __getattr__(self, name):
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101 try:
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102 origin, item = self._aliases[name]
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103 except KeyError:
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104 raise AttributeError(name)
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105 self.__dict__[name] = obj = getattr(origin, item)
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106 return obj
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107
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108 httpserver = _pycompatstub()
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109 urlreq = _pycompatstub()
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110 urlerr = _pycompatstub()
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111 if not ispy3:
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112 import BaseHTTPServer
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113 import CGIHTTPServer
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114 import SimpleHTTPServer
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115 import urllib2
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116 import urllib
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117 urlreq._registeraliases(urllib, (
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118 "addclosehook",
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119 "addinfourl",
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120 "ftpwrapper",
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121 "pathname2url",
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122 "quote",
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123 "splitattr",
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124 "splitpasswd",
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125 "splitport",
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126 "splituser",
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127 "unquote",
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128 "url2pathname",
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129 "urlencode",
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130 ))
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131 urlreq._registeraliases(urllib2, (
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timeless <timeless@mozdev.org>
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132 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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133 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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134 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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135 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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136 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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137 "HTTPBasicAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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138 "HTTPDigestAuthHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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139 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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140 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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141 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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142 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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143 "ProxyHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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144 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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145 "urlopen",
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timeless <timeless@mozdev.org>
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146 ))
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147 urlerr._registeraliases(urllib2, (
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148 "HTTPError",
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timeless <timeless@mozdev.org>
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149 "URLError",
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timeless <timeless@mozdev.org>
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150 ))
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151 httpserver._registeraliases(BaseHTTPServer, (
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152 "HTTPServer",
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153 "BaseHTTPRequestHandler",
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154 ))
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155 httpserver._registeraliases(SimpleHTTPServer, (
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156 "SimpleHTTPRequestHandler",
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157 ))
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158 httpserver._registeraliases(CGIHTTPServer, (
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159 "CGIHTTPRequestHandler",
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160 ))
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timeless <timeless@mozdev.org>
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161
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162 else:
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163 import urllib.request
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164 urlreq._registeraliases(urllib.request, (
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timeless <timeless@mozdev.org>
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165 "AbstractHTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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166 "addclosehook",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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167 "addinfourl",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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168 "BaseHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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169 "build_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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170 "FileHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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171 "FTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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172 "ftpwrapper",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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173 "HTTPHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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174 "HTTPSHandler",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
parents: 28835
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175 "install_opener",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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176 "pathname2url",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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177 "HTTPBasicAuthHandler",
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timeless <timeless@mozdev.org>
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178 "HTTPDigestAuthHandler",
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Gregory Szorc <gregory.szorc@gmail.com>
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179 "HTTPPasswordMgrWithDefaultRealm",
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timeless <timeless@mozdev.org>
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180 "ProxyHandler",
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timeless <timeless@mozdev.org>
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181 "quote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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182 "Request",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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183 "splitattr",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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184 "splitpasswd",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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185 "splitport",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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186 "splituser",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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187 "unquote",
800ec7c048b0 pycompat: add util.urlerr util.urlreq classes for py3 compat
timeless <timeless@mozdev.org>
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188 "url2pathname",
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timeless <timeless@mozdev.org>
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189 "urlopen",
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timeless <timeless@mozdev.org>
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190 ))
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timeless <timeless@mozdev.org>
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191 import urllib.error
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192 urlerr._registeraliases(urllib.error, (
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193 "HTTPError",
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timeless <timeless@mozdev.org>
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194 "URLError",
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timeless <timeless@mozdev.org>
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195 ))
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196 import http.server
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197 httpserver._registeraliases(http.server, (
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198 "HTTPServer",
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199 "BaseHTTPRequestHandler",
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200 "SimpleHTTPRequestHandler",
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201 "CGIHTTPRequestHandler",
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Pulkit Goyal <7895pulkit@gmail.com>
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202 ))