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import sys
from optparse import Values
from typing import List
from pip._internal.cli import cmdoptions
from pip._internal.cli.base_command import Command
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.operations.freeze import freeze
from pip._internal.utils.compat import stdlib_pkgs
DEV_PKGS = {"pip", "setuptools", "distribute", "wheel", "pkg-resources"}
class FreezeCommand(Command):
"""
Output installed packages in requirements format.
packages are listed in a case-insensitive sorted order.
"""
usage = """
%prog [options]"""
log_streams = ("ext://sys.stderr", "ext://sys.stderr")
def add_options(self) -> None:
self.cmd_opts.add_option(
"-r",
"--requirement",
dest="requirements",
action="append",
default=[],
metavar="file",
help=(
"Use the order in the given requirements file and its "
"comments when generating output. This option can be "
"used multiple times."
),
)
self.cmd_opts.add_option(
"-l",
"--local",
dest="local",
action="store_true",
default=False,
help=(
"If in a virtualenv that has global access, do not output "
"globally-installed packages."
),
)
self.cmd_opts.add_option(
"--user",
dest="user",
action="store_true",
default=False,
help="Only output packages installed in user-site.",
)
self.cmd_opts.add_option(cmdoptions.list_path())
self.cmd_opts.add_option(
"--all",
dest="freeze_all",
action="store_true",
help=(
"Do not skip these packages in the output:"
" {}".format(", ".join(DEV_PKGS))
),
)
self.cmd_opts.add_option(
"--exclude-editable",
dest="exclude_editable",
action="store_true",
help="Exclude editable package from output.",
)
self.cmd_opts.add_option(cmdoptions.list_exclude())
self.parser.insert_option_group(0, self.cmd_opts)
def run(self, options: Values, args: List[str]) -> int:
skip = set(stdlib_pkgs)
if not options.freeze_all:
skip.update(DEV_PKGS)
if options.excludes:
skip.update(options.excludes)
cmdoptions.check_list_path_option(options)
for line in freeze(
requirement=options.requirements,
local_only=options.local,
user_only=options.user,
paths=options.path,
isolated=options.isolated_mode,
skip=skip,
exclude_editable=options.exclude_editable,
):
sys.stdout.write(line + "\n")
return SUCCESS
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