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/usr/lib/python2.7/site-packages/pip

Name	Size	Mode	Actions
commands/	-	0755	rm
compat/	-	0755	rm
models/	-	0755	rm
operations/	-	0755	rm
req/	-	0755	rm
utils/	-	0755	rm
vcs/	-	0755	rm
_vendor/	-	0755	rm
basecommand.py	11910	0644	edit dl rm
basecommand.pyc	8935	0644	edit dl rm
basecommand.pyo	8935	0644	edit dl rm
baseparser.py	10465	0644	edit dl rm
baseparser.pyc	10745	0644	edit dl rm
baseparser.pyo	10709	0644	edit dl rm
cmdoptions.py	16474	0644	edit dl rm
cmdoptions.pyc	15626	0644	edit dl rm
cmdoptions.pyo	15626	0644	edit dl rm
download.py	32847	0644	edit dl rm
download.pyc	25940	0644	edit dl rm
download.pyo	25814	0644	edit dl rm
exceptions.py	8121	0644	edit dl rm
exceptions.pyc	12448	0644	edit dl rm
exceptions.pyo	12448	0644	edit dl rm
index.py	39950	0644	edit dl rm
index.pyc	35141	0644	edit dl rm
index.pyo	35063	0644	edit dl rm
locations.py	5626	0644	edit dl rm
locations.pyc	4769	0644	edit dl rm
locations.pyo	4676	0644	edit dl rm
pep425tags.py	10980	0644	edit dl rm
pep425tags.pyc	9479	0644	edit dl rm
pep425tags.pyo	9479	0644	edit dl rm
status_codes.py	156	0644	edit dl rm
status_codes.pyc	393	0644	edit dl rm
status_codes.pyo	393	0644	edit dl rm
wheel.py	32287	0644	edit dl rm
wheel.pyc	25433	0644	edit dl rm
wheel.pyo	25218	0644	edit dl rm
__init__.py	11934	0644	edit dl rm
__init__.pyc	9575	0644	edit dl rm
__init__.pyo	9392	0644	edit dl rm
__main__.py	584	0644	edit dl rm
__main__.pyc	484	0644	edit dl rm
__main__.pyo	484	0644	edit dl rm

Edit: /usr/lib/python2.7/site-packages/pip/baseparser.py (10465B)

"""Base option parser setup"""
from __future__ import absolute_import

import sys
import optparse
import os
import re
import textwrap
from distutils.util import strtobool

from pip._vendor.six import string_types
from pip._vendor.six.moves import configparser
from pip.locations import (
    legacy_config_file, config_basename, running_under_virtualenv,
    site_config_files
)
from pip.utils import appdirs, get_terminal_size

_environ_prefix_re = re.compile(r"^PIP_", re.I)

class PrettyHelpFormatter(optparse.IndentedHelpFormatter):
    """A prettier/less verbose help formatter for optparse."""

def __init__(self, *args, **kwargs):
        # help position must be aligned with __init__.parseopts.description
        kwargs['max_help_position'] = 30
        kwargs['indent_increment'] = 1
        kwargs['width'] = get_terminal_size()[0] - 2
        optparse.IndentedHelpFormatter.__init__(self, *args, **kwargs)

def format_option_strings(self, option):
        return self._format_option_strings(option, ' <%s>', ', ')

def _format_option_strings(self, option, mvarfmt=' <%s>', optsep=', '):
        """
        Return a comma-separated list of option strings and metavars.

:param option:  tuple of (short opt, long opt), e.g: ('-f', '--format')
        :param mvarfmt: metavar format string - evaluated as mvarfmt % metavar
        :param optsep:  separator
        """
        opts = []

if option._short_opts:
            opts.append(option._short_opts[0])
        if option._long_opts:
            opts.append(option._long_opts[0])
        if len(opts) > 1:
            opts.insert(1, optsep)

if option.takes_value():
            metavar = option.metavar or option.dest.lower()
            opts.append(mvarfmt % metavar.lower())

return ''.join(opts)

def format_heading(self, heading):
        if heading == 'Options':
            return ''
        return heading + ':\n'

def format_usage(self, usage):
        """
        Ensure there is only one newline between usage and the first heading
        if there is no description.
        """
        msg = '\nUsage: %s\n' % self.indent_lines(textwrap.dedent(usage), "  ")
        return msg

def format_description(self, description):
        # leave full control over description to us
        if description:
            if hasattr(self.parser, 'main'):
                label = 'Commands'
            else:
                label = 'Description'
            # some doc strings have initial newlines, some don't
            description = description.lstrip('\n')
            # some doc strings have final newlines and spaces, some don't
            description = description.rstrip()
            # dedent, then reindent
            description = self.indent_lines(textwrap.dedent(description), "  ")
            description = '%s:\n%s\n' % (label, description)
            return description
        else:
            return ''

def format_epilog(self, epilog):
        # leave full control over epilog to us
        if epilog:
            return epilog
        else:
            return ''

def indent_lines(self, text, indent):
        new_lines = [indent + line for line in text.split('\n')]
        return "\n".join(new_lines)

class UpdatingDefaultsHelpFormatter(PrettyHelpFormatter):
    """Custom help formatter for use in ConfigOptionParser.

This is updates the defaults before expanding them, allowing
    them to show up correctly in the help listing.
    """

def expand_default(self, option):
        if self.parser is not None:
            self.parser._update_defaults(self.parser.defaults)
        return optparse.IndentedHelpFormatter.expand_default(self, option)

class CustomOptionParser(optparse.OptionParser):

def insert_option_group(self, idx, *args, **kwargs):
        """Insert an OptionGroup at a given position."""
        group = self.add_option_group(*args, **kwargs)

self.option_groups.pop()
        self.option_groups.insert(idx, group)

return group

@property
    def option_list_all(self):
        """Get a list of all options, including those in option groups."""
        res = self.option_list[:]
        for i in self.option_groups:
            res.extend(i.option_list)

return res

class ConfigOptionParser(CustomOptionParser):
    """Custom option parser which updates its defaults by checking the
    configuration files and environmental variables"""

isolated = False

def __init__(self, *args, **kwargs):
        self.config = configparser.RawConfigParser()
        self.name = kwargs.pop('name')
        self.isolated = kwargs.pop("isolated", False)
        self.files = self.get_config_files()
        if self.files:
            self.config.read(self.files)
        assert self.name
        optparse.OptionParser.__init__(self, *args, **kwargs)

def get_config_files(self):
        # the files returned by this method will be parsed in order with the
        # first files listed being overridden by later files in standard
        # ConfigParser fashion
        config_file = os.environ.get('PIP_CONFIG_FILE', False)
        if config_file == os.devnull:
            return []

# at the base we have any site-wide configuration
        files = list(site_config_files)

# per-user configuration next
        if not self.isolated:
            if config_file and os.path.exists(config_file):
                files.append(config_file)
            else:
                # This is the legacy config file, we consider it to be a lower
                # priority than the new file location.
                files.append(legacy_config_file)

# This is the new config file, we consider it to be a higher
                # priority than the legacy file.
                files.append(
                    os.path.join(
                        appdirs.user_config_dir("pip"),
                        config_basename,
                    )
                )

# finally virtualenv configuration first trumping others
        if running_under_virtualenv():
            venv_config_file = os.path.join(
                sys.prefix,
                config_basename,
            )
            if os.path.exists(venv_config_file):
                files.append(venv_config_file)

return files

def check_default(self, option, key, val):
        try:
            return option.check_value(key, val)
        except optparse.OptionValueError as exc:
            print("An error occurred during configuration: %s" % exc)
            sys.exit(3)

def _update_defaults(self, defaults):
        """Updates the given defaults with values from the config files and
        the environ. Does a little special handling for certain types of
        options (lists)."""
        # Then go and look for the other sources of configuration:
        config = {}
        # 1. config files
        for section in ('global', self.name):
            config.update(
                self.normalize_keys(self.get_config_section(section))
            )
        # 2. environmental variables
        if not self.isolated:
            config.update(self.normalize_keys(self.get_environ_vars()))
        # Accumulate complex default state.
        self.values = optparse.Values(self.defaults)
        late_eval = set()
        # Then set the options with those values
        for key, val in config.items():
            # ignore empty values
            if not val:
                continue

option = self.get_option(key)
            # Ignore options not present in this parser. E.g. non-globals put
            # in [global] by users that want them to apply to all applicable
            # commands.
            if option is None:
                continue

if option.action in ('store_true', 'store_false', 'count'):
                val = strtobool(val)
            elif option.action == 'append':
                val = val.split()
                val = [self.check_default(option, key, v) for v in val]
            elif option.action == 'callback':
                late_eval.add(option.dest)
                opt_str = option.get_opt_string()
                val = option.convert_value(opt_str, val)
                # From take_action
                args = option.callback_args or ()
                kwargs = option.callback_kwargs or {}
                option.callback(option, opt_str, val, self, *args, **kwargs)
            else:
                val = self.check_default(option, key, val)

defaults[option.dest] = val

for key in late_eval:
            defaults[key] = getattr(self.values, key)
        self.values = None
        return defaults

def normalize_keys(self, items):
        """Return a config dictionary with normalized keys regardless of
        whether the keys were specified in environment variables or in config
        files"""
        normalized = {}
        for key, val in items:
            key = key.replace('_', '-')
            if not key.startswith('--'):
                key = '--%s' % key  # only prefer long opts
            normalized[key] = val
        return normalized

def get_config_section(self, name):
        """Get a section of a configuration"""
        if self.config.has_section(name):
            return self.config.items(name)
        return []

def get_environ_vars(self):
        """Returns a generator with all environmental vars with prefix PIP_"""
        for key, val in os.environ.items():
            if _environ_prefix_re.search(key):
                yield (_environ_prefix_re.sub("", key).lower(), val)

def get_default_values(self):
        """Overriding to make updating the defaults after instantiation of
        the option parser possible, _update_defaults() does the dirty work."""
        if not self.process_default_values:
            # Old, pre-Optik 1.5 behaviour.
            return optparse.Values(self.defaults)

defaults = self._update_defaults(self.defaults.copy())  # ours
        for option in self._get_all_options():
            default = defaults.get(option.dest)
            if isinstance(default, string_types):
                opt_str = option.get_opt_string()
                defaults[option.dest] = option.check_value(opt_str, default)
        return optparse.Values(defaults)

def error(self, msg):
        self.print_usage(sys.stderr)
        self.exit(2, "%s\n" % msg)

cmd: