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When I try pip install streamlit it fails with the error message:

ERROR: "Could not build wheels for pyarrow which use PEP 517 and cannot be installed directly"

I tried installing pip install pyarrow directly but still gives the same error message

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  • 2
    Can you please post the full traceback of pip install pyarrow? Can you also specify your operating system and version of python? Commented Jul 20, 2020 at 15:18
  • 9
    You can also try pip install --upgrade pip setuptools wheel and then retry pip install streamlit. Commented Jul 20, 2020 at 15:25

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11

In my case the problem was related to Python version. More specifically I noticed in error logs:
RuntimeError: Not supported on 32-bit Windows

So then I installed Python 3.8.6 (x64 version) instead of x32

enter image description here

and the problem was solved with

pip install pyarrow

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1 Comment

u saved my life. waste too much time to tune windows python env.
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I also faced this same issue and I noted that pyarrow is a requirement in streamlit version 0.63.0. So you can use pip install streamlit==0.62.0 and it will work just fine

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While it's true that using a version of Streamlit < 0.63 will work, you'll miss out on every update from now on. For most people, they are accidentally using 32-bit Python instead of 64-bit, as stackoverflow.com/a/64205790/2394542 indicates
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Streamlit Version 0.62.1 and python version 3.8.5 works fine.

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