AttributeError: module 'click' has no attribute 'get_os_args'

I started getting this error on all my apps today. Anyone else getting this?

Traceback (most recent call last):

  File "/home/appuser/venv/bin/streamlit", line 8, in <module>


  File "/home/appuser/venv/lib/python3.7/site-packages/click/", line 1130, in __call__

    return self.main(*args, **kwargs)

  File "/home/appuser/venv/lib/python3.7/site-packages/click/", line 1055, in main

    rv = self.invoke(ctx)

  File "/home/appuser/venv/lib/python3.7/site-packages/click/", line 1657, in invoke

    return _process_result(sub_ctx.command.invoke(sub_ctx))

  File "/home/appuser/venv/lib/python3.7/site-packages/click/", line 1404, in invoke

    return ctx.invoke(self.callback, **ctx.params)

  File "/home/appuser/venv/lib/python3.7/site-packages/click/", line 760, in invoke

    return __callback(*args, **kwargs)

  File "/home/appuser/venv/lib/python3.7/site-packages/streamlit/", line 204, in main_run

    _main_run(target, args, flag_options=kwargs)

  File "/home/appuser/venv/lib/python3.7/site-packages/streamlit/", line 232, in _main_run

    command_line = _get_command_line_as_string()

  File "/home/appuser/venv/lib/python3.7/site-packages/streamlit/", line 221, in _get_command_line_as_string


Same error for me. App was working previously.

I think the reason is the removal of previously deprecated labeled code in the api of the click library version 8.1.0, which was introduced today:

Changes — Click Documentation (8.1.x)

That is the reason this issue appears since today.
The click library is a dependency of streamlit, maybe the issue can be resolved by explicitly nailing the click version in requirements.txt to the previous version:


Dependency hell… :grin:

There is already a github issue:


Tried that already. Doesn’t work. click==8.0.4 is installed and still fails. Perhaps some other dependency?

For now, click==7.1.2 works with existing streamlit package.


click==8.0.3 and click==8.0.1 do not work.

It works now. Thanks man

I updated my repo’s requirements.txt file with


and it works now

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I cannot reproduce this behaviour.
My streamlit cloud app seems to work with


which makes sense, because the removal of the deprecated code, that caused the issue, was done in the next version 8.1.0 of click.

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click==8.0 works for me!
Thanks a lot.


should do the trick, no need for nailing click version anymore

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