仅在PyCharm中尝试了相对顶级包消息以外的相对导入

Question

UPDATE: if I change the name of the select module (in which the import error occurs) to select1 , the problem goes away! WHAT the?

First off: everything works fine when I try to import my package from the command line, or run pytest in the project directory.

But in PyCharm I'm getting the "attempted relative import beyond top-level package" problem when I try to run my tests, and ONLY while in PyCharm. I can't figure out why.

I have even deleted and re-cloned the repository and the problem still occurs.

Here is the link to the problem branch.

And here is the tb:

Testing started at 4:02 PM ...
C:\Users\ricky\AppData\Local\Programs\Python\Python37\python.exe "C:\Program Files\JetBrains\PyCharm Community Edition 2018.1.2\helpers\pycharm\_jb_pytest_runner.py" --path C:/Users/ricky/PycharmProjects/candejar/tests
Traceback (most recent call last):
  File "C:\Program Files\JetBrains\PyCharm Community Edition 2018.1.2\helpers\pycharm\_jb_pytest_runner.py", line 10, in <module>
    from pkg_resources import iter_entry_points
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\site-packages\pkg_resources\__init__.py", line 36, in <module>
    import email.parser
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\email\parser.py", line 12, in <module>
    from email.feedparser import FeedParser, BytesFeedParser
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\email\feedparser.py", line 27, in <module>
    from email._policybase import compat32
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\email\_policybase.py", line 9, in <module>
    from email.utils import _has_surrogates
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\email\utils.py", line 29, in <module>
    import socket
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\socket.py", line 52, in <module>
    import os, sys, io, selectors
  File "C:\Users\ricky\AppData\Local\Programs\Python\Python37\lib\selectors.py", line 12, in <module>
    import select
  File "C:\Users\ricky\PycharmProjects\candejar\candejar\select.py", line 24, in <module>
    from . import exc
ImportError: attempted relative import with no known parent package

Process finished with exit code 1

I'm sure there is something simple going on here but I just can't figure it out. NOTE: I'm using Python 3.7 RC 1.

The sys.path in pycharm and the command line come out to be the same, except pycharm also includes the pycharm project main package directory (which for some reason appears twice ).

Answer 1

I was able to solve this by deleting the .idea directory from the cloned repository and re-opening PyCharm. I still don't know what was wrong, but it is fixed now. Very weird.

UPDATE: it has something to do with the following line in the project .iml file in the .idea folder:

<sourceFolder url="file://$MODULE_DIR$/candejar" isTestSource="false" />

Removing that xml code solves the issue. But I do not know why, and I don't know how it got there in the first place (I do not recall messing around with any of my settings prior to this error).