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[BUG] pyparsing version in py-env tag is ignored

See original GitHub issue

Describe the bug Adding this entry in the py-env tag does not get the desired version of pyparsing:

- pyparsing==3.0.9

Still get version 3.0.7.

To Reproduce Use this HTML:

<html>
    <head>
    <link rel="stylesheet" href="https://pyscript.net/alpha/pyscript.css" />
    <script defer src="https://pyscript.net/alpha/pyscript.js"></script>
    <py-env>
        - pyparsing==3.0.9
    </py-env>
    </head>
    <body>
        <py-script>
import pyparsing as pp
print(pp.__version__)
        </py-script>
    </body>
</html>

Expected behavior Display of 3.0.9

Screenshots Browser shows

3.0.7

Issue Analytics

State:
Created a year ago
Comments:6 (2 by maintainers)

Top GitHub Comments

1reaction

rthcommented, May 12, 2022

The issue is that micropip requires pyparsing, and loads 3.0.7. So when you install a different version, it’s already imported and what you see is the previously imported version,

>>> import micropip
>>> await micropip.install('pyparsing==3.0.9')
>>> micropip.list()
Name      | Version | Source
--------- | ------- | -------
pyparsing | 3.0.9   | pypi
distutils | 1.0     | pyodide
micropip  | 0.1     | pyodide
packaging | 21.3    | pyodide
>>> import pyparsing
>>> pyparsing.__version__
'3.0.7'

you need to explicitly reload the module to update it,

>>> import importlib
>>> importlib.reload(pyparsing)
<module 'pyparsing' from '/lib/python3.10/site-packages/pyparsing/__init__.py'>
>>> pyparsing.__version__
'3.0.9'

And this is what likely happens in pyscript since it uses micropip internally.

So overall it’s likely the expected behavior.

0reactions

marimeirelescommented, Oct 4, 2022

This will soon be outdated by https://github.com/pyscript/pyscript/pull/775, I believe.

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