python - functools 没有属性 lru_cache

Question

我在 Windows 上使用 Python 3.7
运行每个代码时都会发生此错误:

Traceback (most recent call last):
  File "test.py", line 1, in <module>
    import nltk
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\site-packages\nltk\__init__.py", line 99, in <module>
    from nltk.internals import config_java
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\site-packages\nltk\internals.py", line 11, in <module>
    import subprocess
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\subprocess.py", line 50, in <module>
    import signal
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\signal.py", line 3, in <module>
    from functools import wraps as _wraps
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\functools.py", line 21, in <module>
    from collections import namedtuple
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\collections\__init__.py", line 22, in <module>
    from keyword import iskeyword as _iskeyword
  File "C:\Users\HP\Desktop\tweepy\keyword.py", line 1, in <module>
    import re
  File "C:\Users\HP\AppData\Local\Programs\Python\Python37\lib\re.py", line 297, in <module>
    @functools.lru_cache(_MAXCACHE)
AttributeError: module 'functools' has no attribute 'lru_cache'

如何解决？

Answer 1

好像有人发表了 functools在 pypi 上打包，所以如果你运行了:

# don't run this!
pip install functools

您可能不小心安装了该软件包。如果您遇到此错误，我会:

pip uninstall functools

确保您使用的 functools 是基础包 functools。
(我在这里结束是因为我试图使用 functools.cache ，它似乎只存在于 Python 3.8 中，而不是更早的版本。)