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ENH: dataframe.astype() exception message to include column name #47571

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d3bgger opened this issue Jul 1, 2022 · 1 comment · Fixed by #48321
Closed

ENH: dataframe.astype() exception message to include column name #47571

d3bgger opened this issue Jul 1, 2022 · 1 comment · Fixed by #48321
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Dtype Conversions Unexpected or buggy dtype conversions Enhancement Error Reporting Incorrect or improved errors from pandas

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@d3bgger
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d3bgger commented Jul 1, 2022

Is your feature request related to a problem?

When using dataframe.astype() and there is a column missing or there are some values that cannot be correctly converted, there is an exception raised. But there is no way to know which column is missing or which column has the wrong value.

Describe the solution you'd like

The exception message of the dataframe.astype() should contain the column name responsible for the exception (missing column(s) or column with wrong values).

API breaking implications

This does not introduce any breaking changes

Additional context

Some examples of the current exceptions raised by astype():

KeyError: 'Only a column name can be used for the key in a dtype mappings argument.'

TypeError: object cannot be converted to an IntegerDtype

ValueError: invalid literal for int() with base 10: 'test'
@d3bgger d3bgger added Enhancement Needs Triage Issue that has not been reviewed by a pandas team member labels Jul 1, 2022
@mroeschke mroeschke added Error Reporting Incorrect or improved errors from pandas Dtype Conversions Unexpected or buggy dtype conversions and removed Needs Triage Issue that has not been reviewed by a pandas team member labels Aug 11, 2022
@dannyi96
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Note -

issue # 1 - KeyError: 'Only a column name can be used for the key in a dtype mappings argument.'
has already been addressed by #44487

am working on addressing issue # 3 with PR #48321

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Labels
Dtype Conversions Unexpected or buggy dtype conversions Enhancement Error Reporting Incorrect or improved errors from pandas
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3 participants