Mercurial > repos > bcclaywell > argo_navis

annotate venv/lib/python2.7/site-packages/pip/basecommand.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 """Base Command class, and related routines"""
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2 from __future__ import absolute_import
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3
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4 import logging
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5 import os
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6 import sys
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7 import traceback
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8 import optparse
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9 import warnings
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10
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11 from pip._vendor.six import StringIO
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12
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13 from pip import cmdoptions
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14 from pip.locations import running_under_virtualenv
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15 from pip.download import PipSession
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16 from pip.exceptions import (BadCommand, InstallationError, UninstallationError,
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17 CommandError, PreviousBuildDirError)
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18 from pip.compat import logging_dictConfig
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19 from pip.baseparser import ConfigOptionParser, UpdatingDefaultsHelpFormatter
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20 from pip.status_codes import (
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21 SUCCESS, ERROR, UNKNOWN_ERROR, VIRTUALENV_NOT_FOUND,
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22 PREVIOUS_BUILD_DIR_ERROR,
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23 )
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24 from pip.utils import appdirs, get_prog, normalize_path
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25 from pip.utils.deprecation import RemovedInPip8Warning
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26 from pip.utils.filesystem import check_path_owner
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27 from pip.utils.logging import IndentingFormatter
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28 from pip.utils.outdated import pip_version_check
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29
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30
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31 __all__ = ['Command']
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32
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33
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34 logger = logging.getLogger(__name__)
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35
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36
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37 class Command(object):
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38 name = None
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39 usage = None
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40 hidden = False
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41 log_streams = ("ext://sys.stdout", "ext://sys.stderr")
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42
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43 def __init__(self, isolated=False):
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44 parser_kw = {
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45 'usage': self.usage,
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46 'prog': '%s %s' % (get_prog(), self.name),
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47 'formatter': UpdatingDefaultsHelpFormatter(),
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48 'add_help_option': False,
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49 'name': self.name,
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50 'description': self.__doc__,
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51 'isolated': isolated,
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52 }
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53
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54 self.parser = ConfigOptionParser(**parser_kw)
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55
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56 # Commands should add options to this option group
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57 optgroup_name = '%s Options' % self.name.capitalize()
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58 self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name)
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59
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60 # Add the general options
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61 gen_opts = cmdoptions.make_option_group(
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62 cmdoptions.general_group,
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63 self.parser,
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64 )
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65 self.parser.add_option_group(gen_opts)
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66
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67 def _build_session(self, options, retries=None, timeout=None):
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68 session = PipSession(
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69 cache=(
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70 normalize_path(os.path.join(options.cache_dir, "http"))
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71 if options.cache_dir else None
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72 ),
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73 retries=retries if retries is not None else options.retries,
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74 insecure_hosts=options.trusted_hosts,
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75 )
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76
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77 # Handle custom ca-bundles from the user
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78 if options.cert:
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79 session.verify = options.cert
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80
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81 # Handle SSL client certificate
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82 if options.client_cert:
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83 session.cert = options.client_cert
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84
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85 # Handle timeouts
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86 if options.timeout or timeout:
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87 session.timeout = (
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88 timeout if timeout is not None else options.timeout
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89 )
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90
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91 # Handle configured proxies
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92 if options.proxy:
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93 session.proxies = {
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94 "http": options.proxy,
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95 "https": options.proxy,
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96 }
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97
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98 # Determine if we can prompt the user for authentication or not
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99 session.auth.prompting = not options.no_input
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100
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101 return session
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102
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103 def parse_args(self, args):
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104 # factored out for testability
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105 return self.parser.parse_args(args)
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106
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107 def main(self, args):
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108 options, args = self.parse_args(args)
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109
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110 if options.quiet:
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111 level = "WARNING"
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112 elif options.verbose:
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113 level = "DEBUG"
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114 else:
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115 level = "INFO"
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116
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117 # Compute the path for our debug log.
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118 debug_log_path = os.path.join(appdirs.user_log_dir("pip"), "debug.log")
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119
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120 # Ensure that the path for our debug log is owned by the current user
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121 # and if it is not, disable the debug log.
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122 write_debug_log = check_path_owner(debug_log_path)
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123
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124 logging_dictConfig({
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125 "version": 1,
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126 "disable_existing_loggers": False,
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127 "filters": {
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128 "exclude_warnings": {
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129 "()": "pip.utils.logging.MaxLevelFilter",
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130 "level": logging.WARNING,
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131 },
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132 },
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133 "formatters": {
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134 "indent": {
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135 "()": IndentingFormatter,
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136 "format": (
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137 "%(message)s"
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138 if not options.log_explicit_levels
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139 else "[%(levelname)s] %(message)s"
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140 ),
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141 },
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142 },
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143 "handlers": {
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144 "console": {
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145 "level": level,
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146 "class": "pip.utils.logging.ColorizedStreamHandler",
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147 "stream": self.log_streams[0],
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148 "filters": ["exclude_warnings"],
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149 "formatter": "indent",
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150 },
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151 "console_errors": {
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152 "level": "WARNING",
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153 "class": "pip.utils.logging.ColorizedStreamHandler",
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154 "stream": self.log_streams[1],
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155 "formatter": "indent",
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156 },
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157 "debug_log": {
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158 "level": "DEBUG",
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159 "class": "pip.utils.logging.BetterRotatingFileHandler",
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160 "filename": debug_log_path,
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161 "maxBytes": 10 * 1000 * 1000, # 10 MB
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162 "backupCount": 1,
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163 "delay": True,
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164 "formatter": "indent",
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165 },
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166 "user_log": {
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167 "level": "DEBUG",
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168 "class": "pip.utils.logging.BetterRotatingFileHandler",
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169 "filename": options.log or "/dev/null",
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170 "delay": True,
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171 "formatter": "indent",
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172 },
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173 },
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174 "root": {
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175 "level": level,
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176 "handlers": list(filter(None, [
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177 "console",
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178 "console_errors",
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179 "debug_log" if write_debug_log else None,
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180 "user_log" if options.log else None,
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181 ])),
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182 },
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183 # Disable any logging besides WARNING unless we have DEBUG level
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184 # logging enabled. These use both pip._vendor and the bare names
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185 # for the case where someone unbundles our libraries.
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186 "loggers": dict(
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187 (
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188 name,
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189 {
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190 "level": (
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191 "WARNING"
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192 if level in ["INFO", "ERROR"]
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193 else "DEBUG"
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194 ),
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195 },
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196 )
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197 for name in ["pip._vendor", "distlib", "requests", "urllib3"]
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198 ),
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199 })
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200
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201 # We add this warning here instead of up above, because the logger
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202 # hasn't been configured until just now.
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203 if not write_debug_log:
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204 logger.warning(
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205 "The directory '%s' or its parent directory is not owned by "
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206 "the current user and the debug log has been disabled. Please "
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207 "check the permissions and owner of that directory. If "
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208 "executing pip with sudo, you may want sudo's -H flag.",
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209 os.path.dirname(debug_log_path),
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210 )
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211
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212 if options.log_explicit_levels:
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213 warnings.warn(
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214 "--log-explicit-levels has been deprecated and will be removed"
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215 " in a future version.",
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216 RemovedInPip8Warning,
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217 )
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218
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219 # TODO: try to get these passing down from the command?
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220 # without resorting to os.environ to hold these.
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221
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222 if options.no_input:
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223 os.environ['PIP_NO_INPUT'] = '1'
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224
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225 if options.exists_action:
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226 os.environ['PIP_EXISTS_ACTION'] = ' '.join(options.exists_action)
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227
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228 if options.require_venv:
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229 # If a venv is required check if it can really be found
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230 if not running_under_virtualenv():
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231 logger.critical(
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232 'Could not find an activated virtualenv (required).'
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233 )
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234 sys.exit(VIRTUALENV_NOT_FOUND)
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235
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236 # Check if we're using the latest version of pip available
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237 if (not options.disable_pip_version_check and not
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238 getattr(options, "no_index", False)):
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239 with self._build_session(
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240 options,
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241 retries=0,
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242 timeout=min(5, options.timeout)) as session:
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243 pip_version_check(session)
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244
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245 try:
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246 status = self.run(options, args)
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247 # FIXME: all commands should return an exit status
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248 # and when it is done, isinstance is not needed anymore
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249 if isinstance(status, int):
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250 return status
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251 except PreviousBuildDirError as exc:
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252 logger.critical(str(exc))
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253 logger.debug('Exception information:\n%s', format_exc())
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254
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255 return PREVIOUS_BUILD_DIR_ERROR
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256 except (InstallationError, UninstallationError, BadCommand) as exc:
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257 logger.critical(str(exc))
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258 logger.debug('Exception information:\n%s', format_exc())
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259
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260 return ERROR
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261 except CommandError as exc:
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262 logger.critical('ERROR: %s', exc)
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263 logger.debug('Exception information:\n%s', format_exc())
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264
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265 return ERROR
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266 except KeyboardInterrupt:
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267 logger.critical('Operation cancelled by user')
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268 logger.debug('Exception information:\n%s', format_exc())
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269
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270 return ERROR
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271 except:
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272 logger.critical('Exception:\n%s', format_exc())
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273
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274 return UNKNOWN_ERROR
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275
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276 return SUCCESS
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277
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278
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279 def format_exc(exc_info=None):
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280 if exc_info is None:
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281 exc_info = sys.exc_info()
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282 out = StringIO()
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283 traceback.print_exception(*exc_info, **dict(file=out))
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284 return out.getvalue()