Pyinstaller: pip install pyinstaller produces Error: AttributeError: module 'enum' has no attribute 'IntFlag'

[doverradio]

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First, I tried finding this specific issue by first searching the issues and checking the if things go wrong guide: a solution was not found in either.

I simply wanted to install pyinstaller, so I did a pip install:

pip install pyinstaller

This resulted in this:

Downloading https://files.pythonhosted.org/packages/03/32/0e0de593f129bf1d1e77eed562496d154ef4460fd5cecfd78612ef39a0cc/PyInstaller-3.4.tar.gz (3.5MB)
    100% |████████████████████████████████| 3.5MB 6.4MB/s
  Installing build dependencies ... error
  Complete output from command c:\programdata\anaconda3\python.exe c:\programdata\anaconda3\lib\site-packages\pip install --ignore-installed --no-user --prefix C:\Users\USER\AppData\Local\Temp\pip-build-env-imeyh_am\overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple -- setuptools wheel:
  Traceback (most recent call last):
    File "c:\programdata\anaconda3\lib\runpy.py", line 193, in _run_module_as_main
      "__main__", mod_spec)
    File "c:\programdata\anaconda3\lib\runpy.py", line 85, in _run_code
      exec(code, run_globals)
    File "c:\programdata\anaconda3\lib\site-packages\pip\__main__.py", line 16, in <module>
      from pip._internal import main as _main  # isort:skip # noqa
    File "c:\programdata\anaconda3\lib\site-packages\pip\_internal\__init__.py", line 4, in <module>
      import locale
    File "c:\programdata\anaconda3\lib\locale.py", line 16, in <module>
      import re
    File "c:\programdata\anaconda3\lib\re.py", line 142, in <module>
      class RegexFlag(enum.IntFlag):
  AttributeError: module 'enum' has no attribute 'IntFlag'

I'm running python anaconda 3.6

[doverradio]

HOLD UP

I solved it by removing enum:

pip uninstall enum34

Is this fine? Will this cause issues using pyinstaller?

[DingGuodong]

I am also suffering this problem and have no luck.
Why not author or dev team support a wheel package(.whl) for multiple system platform?

[BoboTiG]

Closing the issue as this is not PyInstaller related, but pip+anaconda.