$ git clone git@github.com:python/cpython.git cpython2 $ cd cpython2 $ ./configure --with-pydebug $ make -j $ ./python Lib/test/test_xmlrpc.py Traceback (most recent call last): File "Lib/test/test_xmlrpc.py", line 8, in <module> import xmlrpc.client as xmlrpclib File "/opt/Code/python/cpython2/Lib/xmlrpc/client.py", line 136, in <module> import http.client File "/opt/Code/python/cpython2/Lib/http/client.py", line 71, in <module> import email.parser File "/opt/Code/python/cpython2/Lib/email/parser.py", line 12, in <module> from email.feedparser import FeedParser, BytesFeedParser File "/opt/Code/python/cpython2/Lib/email/feedparser.py", line 27, in <module> from email._policybase import compat32 File "/opt/Code/python/cpython2/Lib/email/_policybase.py", line 9, in <module> from email.utils import _has_surrogates File "/opt/Code/python/cpython2/Lib/email/utils.py", line 28, in <module> import random File "/opt/Code/python/cpython2/Lib/random.py", line 47, in <module> import bisect as _bisect File "/opt/Code/python/cpython2/Lib/test/bisect.py", line 27, in <module> import tempfile File "/opt/Code/python/cpython2/Lib/tempfile.py", line 45, in <module> from random import Random as _Random ImportError: cannot import name 'Random' from 'random' (/opt/Code/python/cpython2/Lib/random.py) I know about running test this way: $ ./python -m test -v test_xmlrpc And it works. I am just wondering whether I should be able to run test this way: ./python Lib/test/test_blabla.py? Because running other tests without test module works, for example: ./python Lib/test/test_ast.py. Only test which imports random module fails.

Your problem is that you have the Lib/test/bisect.py file. I renamed it to Lib/test/bisect_cmd.py. Workarounds: * Run the test using: ./python -m test test_xmlrpc * Rename Lib/test/bisect.py to Lib/test/bisect_cmd.py This bug is already fixed in the 2.7. You have to wait for the next 2.7 release to get the fix.

Okay, thanks, Victor. Your suggestion to rename Lib/test/bisect.py to Lib/test/bisect_cmd.py works. My question is why you fixed in 2.7 branch only? This problem persists in master (3.8). Ah, I think because I use cpython2 directory name, you thought I used Python 2. cpython2 is just a directory name. It has nothing to do with Python 2. I used master when finding this bug.

> Ah, I think because I use cpython2 directory name, you thought I used Python 2. cpython2 is just a directory name. It has nothing to do with Python 2. I used master when finding this bug. Ah right, I can reproduce the issue in master: vstinner@apu$ ./python Lib/test/test_xmlrpc.py Traceback (most recent call last): File "Lib/test/test_xmlrpc.py", line 8, in <module> import xmlrpc.client as xmlrpclib File "/home/vstinner/prog/python/master/Lib/xmlrpc/client.py", line 136, in <module> import http.client File "/home/vstinner/prog/python/master/Lib/http/client.py", line 71, in <module> import email.parser File "/home/vstinner/prog/python/master/Lib/email/parser.py", line 12, in <module> from email.feedparser import FeedParser, BytesFeedParser File "/home/vstinner/prog/python/master/Lib/email/feedparser.py", line 27, in <module> from email._policybase import compat32 File "/home/vstinner/prog/python/master/Lib/email/_policybase.py", line 9, in <module> from email.utils import _has_surrogates File "/home/vstinner/prog/python/master/Lib/email/utils.py", line 28, in <module> import random File "/home/vstinner/prog/python/master/Lib/random.py", line 47, in <module> import bisect as _bisect File "/home/vstinner/prog/python/master/Lib/test/bisect.py", line 27, in <module> import tempfile File "/home/vstinner/prog/python/master/Lib/tempfile.py", line 45, in <module> from random import Random as _Random ImportError: cannot import name 'Random' from 'random' (/home/vstinner/prog/python/master/Lib/random.py) Hum. We should either rename Lib/test/bisect.py to Lib/test/bisect_cmd.py or move the feature into libregrtest.

 New changeset 1dd035954bb03c41b954ebbd63969b4bcb0e106e by Victor Stinner in branch 'master': bpo-35519: Rename test.bisect to test.bisect_cmd (GH-11200) https://github.com/python/cpython/commit/1dd035954bb03c41b954ebbd63969b4bcb0e106e 

 New changeset 05dfa0cc96f6b72b1e72f57b1b5f4b37764a382d by Miss Islington (bot) in branch '3.7': bpo-35519: Rename test.bisect to test.bisect_cmd (GH-11200) https://github.com/python/cpython/commit/05dfa0cc96f6b72b1e72f57b1b5f4b37764a382d 

I renamed Lib/test/bisect.py to Lib/test/bisect_cmd.py ;-)