[fix] Issue 554 - ValueError: cannot convert float NaN to integer

[tswsxk]

Description

Fixes #554

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Change line 196 from:

 if std != 0:
    digit = max(round(log10(1 / std) + 1) + 2, 0)
    self.round_dataframe[col] = self.dataframe[col].map(f"{{:.{digit}f}}".format).astype(float)

to

 if std != 0 and not pd.isna(std):
    digit = max(round(log10(1 / std) + 1) + 2, 0)
    self.round_dataframe[col] = self.dataframe[col].map(f"{{:.{digit}f}}".format).astype(float)

Test Configuration:

• OS: CentOS Linux release 8.2.2.2004
• Python version: python3.10
• Shapash version: shapash-2.5.0

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[guillaume-vignal]

Thanks @tswsxk for your PR, the issue has been fixed with #553.
Don't hesitate to test the new version 2.6.0 of Shapash and tell us if everything is good.