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在全新的环境中安装jupyter时出现错误:AttributeError: module 'enum' has no attribute 'IntFlag'
,错误详情如下
==> script messages <== Traceback (most recent call last): File
"/home/path/to/miniconda2/envs/py3/bin/jupyter-nbextension", line 4, in
<module> import re File
"/home/path/to/miniconda2/envs/py3/lib/python3.7/re.py", line 143, in <module>
class RegexFlag(enum.IntFlag): AttributeError: module 'enum' has no attribute
'IntFlag'
同理,直接import re
时也会出现同样错误,查询发现,是PYTHONPATH的设置错误,在.bashrc中存留有以前使用python2时留下的配置,导致python3不能找到正确的enum位置,注释掉bashrc中相关语句后,清空$PYTHONPATH变量即可:
unset PYTHONPATH #查看是否清空 echo $PYTHONPATH
然后即可正常使用,PYTHONPATH是python2中多用的配置,使用python3和conda后一般不再需要