Created starter files for the project.
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284
venv/Lib/site-packages/pip/_internal/commands/configuration.py
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284
venv/Lib/site-packages/pip/_internal/commands/configuration.py
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import logging
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import os
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import subprocess
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from pip._internal.cli.base_command import Command
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from pip._internal.cli.status_codes import ERROR, SUCCESS
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from pip._internal.configuration import (
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Configuration,
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get_configuration_files,
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kinds,
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)
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from pip._internal.exceptions import PipError
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from pip._internal.utils.logging import indent_log
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from pip._internal.utils.misc import get_prog, write_output
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from pip._internal.utils.typing import MYPY_CHECK_RUNNING
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if MYPY_CHECK_RUNNING:
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from typing import List, Any, Optional
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from optparse import Values
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from pip._internal.configuration import Kind
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logger = logging.getLogger(__name__)
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class ConfigurationCommand(Command):
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"""
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Manage local and global configuration.
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Subcommands:
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- list: List the active configuration (or from the file specified)
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- edit: Edit the configuration file in an editor
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- get: Get the value associated with name
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- set: Set the name=value
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- unset: Unset the value associated with name
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- debug: List the configuration files and values defined under them
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If none of --user, --global and --site are passed, a virtual
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environment configuration file is used if one is active and the file
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exists. Otherwise, all modifications happen on the to the user file by
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default.
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"""
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ignore_require_venv = True
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usage = """
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%prog [<file-option>] list
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%prog [<file-option>] [--editor <editor-path>] edit
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%prog [<file-option>] get name
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%prog [<file-option>] set name value
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%prog [<file-option>] unset name
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%prog [<file-option>] debug
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"""
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def add_options(self):
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# type: () -> None
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self.cmd_opts.add_option(
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'--editor',
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dest='editor',
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action='store',
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default=None,
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help=(
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'Editor to use to edit the file. Uses VISUAL or EDITOR '
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'environment variables if not provided.'
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)
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)
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self.cmd_opts.add_option(
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'--global',
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dest='global_file',
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action='store_true',
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default=False,
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help='Use the system-wide configuration file only'
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)
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self.cmd_opts.add_option(
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'--user',
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dest='user_file',
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action='store_true',
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default=False,
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help='Use the user configuration file only'
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)
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self.cmd_opts.add_option(
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'--site',
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dest='site_file',
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action='store_true',
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default=False,
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help='Use the current environment configuration file only'
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)
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self.parser.insert_option_group(0, self.cmd_opts)
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def run(self, options, args):
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# type: (Values, List[str]) -> int
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handlers = {
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"list": self.list_values,
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"edit": self.open_in_editor,
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"get": self.get_name,
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"set": self.set_name_value,
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"unset": self.unset_name,
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"debug": self.list_config_values,
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}
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# Determine action
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if not args or args[0] not in handlers:
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logger.error(
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"Need an action (%s) to perform.",
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", ".join(sorted(handlers)),
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)
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return ERROR
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action = args[0]
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# Determine which configuration files are to be loaded
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# Depends on whether the command is modifying.
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try:
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load_only = self._determine_file(
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options, need_value=(action in ["get", "set", "unset", "edit"])
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)
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except PipError as e:
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logger.error(e.args[0])
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return ERROR
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# Load a new configuration
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self.configuration = Configuration(
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isolated=options.isolated_mode, load_only=load_only
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)
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self.configuration.load()
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# Error handling happens here, not in the action-handlers.
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try:
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handlers[action](options, args[1:])
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except PipError as e:
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logger.error(e.args[0])
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return ERROR
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return SUCCESS
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def _determine_file(self, options, need_value):
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# type: (Values, bool) -> Optional[Kind]
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file_options = [key for key, value in (
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(kinds.USER, options.user_file),
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(kinds.GLOBAL, options.global_file),
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(kinds.SITE, options.site_file),
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) if value]
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if not file_options:
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if not need_value:
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return None
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# Default to user, unless there's a site file.
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elif any(
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os.path.exists(site_config_file)
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for site_config_file in get_configuration_files()[kinds.SITE]
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):
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return kinds.SITE
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else:
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return kinds.USER
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elif len(file_options) == 1:
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return file_options[0]
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raise PipError(
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"Need exactly one file to operate upon "
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"(--user, --site, --global) to perform."
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)
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def list_values(self, options, args):
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# type: (Values, List[str]) -> None
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self._get_n_args(args, "list", n=0)
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for key, value in sorted(self.configuration.items()):
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write_output("%s=%r", key, value)
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def get_name(self, options, args):
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# type: (Values, List[str]) -> None
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key = self._get_n_args(args, "get [name]", n=1)
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value = self.configuration.get_value(key)
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write_output("%s", value)
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def set_name_value(self, options, args):
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# type: (Values, List[str]) -> None
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key, value = self._get_n_args(args, "set [name] [value]", n=2)
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self.configuration.set_value(key, value)
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self._save_configuration()
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def unset_name(self, options, args):
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# type: (Values, List[str]) -> None
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key = self._get_n_args(args, "unset [name]", n=1)
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self.configuration.unset_value(key)
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self._save_configuration()
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def list_config_values(self, options, args):
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# type: (Values, List[str]) -> None
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"""List config key-value pairs across different config files"""
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self._get_n_args(args, "debug", n=0)
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self.print_env_var_values()
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# Iterate over config files and print if they exist, and the
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# key-value pairs present in them if they do
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for variant, files in sorted(self.configuration.iter_config_files()):
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write_output("%s:", variant)
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for fname in files:
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with indent_log():
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file_exists = os.path.exists(fname)
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write_output("%s, exists: %r",
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fname, file_exists)
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if file_exists:
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self.print_config_file_values(variant)
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def print_config_file_values(self, variant):
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# type: (Kind) -> None
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"""Get key-value pairs from the file of a variant"""
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for name, value in self.configuration.\
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get_values_in_config(variant).items():
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with indent_log():
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write_output("%s: %s", name, value)
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def print_env_var_values(self):
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# type: () -> None
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"""Get key-values pairs present as environment variables"""
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write_output("%s:", 'env_var')
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with indent_log():
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for key, value in sorted(self.configuration.get_environ_vars()):
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env_var = 'PIP_{}'.format(key.upper())
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write_output("%s=%r", env_var, value)
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def open_in_editor(self, options, args):
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# type: (Values, List[str]) -> None
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editor = self._determine_editor(options)
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fname = self.configuration.get_file_to_edit()
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if fname is None:
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raise PipError("Could not determine appropriate file.")
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try:
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subprocess.check_call([editor, fname])
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except subprocess.CalledProcessError as e:
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raise PipError(
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"Editor Subprocess exited with exit code {}"
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.format(e.returncode)
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)
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def _get_n_args(self, args, example, n):
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# type: (List[str], str, int) -> Any
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"""Helper to make sure the command got the right number of arguments
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"""
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if len(args) != n:
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msg = (
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'Got unexpected number of arguments, expected {}. '
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'(example: "{} config {}")'
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).format(n, get_prog(), example)
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raise PipError(msg)
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if n == 1:
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return args[0]
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else:
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return args
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def _save_configuration(self):
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# type: () -> None
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# We successfully ran a modifying command. Need to save the
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# configuration.
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try:
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self.configuration.save()
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except Exception:
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logger.exception(
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"Unable to save configuration. Please report this as a bug."
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)
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raise PipError("Internal Error.")
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def _determine_editor(self, options):
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# type: (Values) -> str
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if options.editor is not None:
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return options.editor
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elif "VISUAL" in os.environ:
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return os.environ["VISUAL"]
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elif "EDITOR" in os.environ:
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return os.environ["EDITOR"]
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else:
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raise PipError("Could not determine editor to use.")
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