Drop parallelization in `pip list`
@@ -5,10 +5,8 @@ from __future__ import absolute_import
import json
import logging
-from multiprocessing.dummy import Pool
from pip._vendor import six
-from pip._vendor.requests.adapters import DEFAULT_POOLSIZE
from pip._internal.cli import cmdoptions
from pip._internal.cli.req_command import IndexGroupCommand
@@ -210,18 +208,10 @@ class ListCommand(IndexGroupCommand):
dist.latest_filetype = typ
return dist
- # This is done for 2x speed up of requests to pypi.org
- # so that "real time" of this function
- # is almost equal to "user time"
- pool = Pool(DEFAULT_POOLSIZE)
-
- for dist in pool.imap_unordered(latest_info, packages):
+ for dist in map(latest_info, packages):
if dist is not None:
yield dist
- pool.close()
- pool.join()
-
def output_package_listing(self, packages, options):
packages = sorted(
packages,
