[issue26208] decimal C module's exceptions don't match the Python version

[Pekka Klärck]

Pekka Klärck <pekka.klarck at gmail.com> added the comment:

Just noticed this myself when testing with Python 3.5-3.7:

    >>> from decimal import Decimal
    >>> d = Decimal('foo')
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
    decimal.InvalidOperation: [<class 'decimal.ConversionSyntax'>]


With Python 2.7 I get this error instead:

    decimal.InvalidOperation: Invalid literal for Decimal: 'foo'


I'm writing type conversion code and was planning to include the error message by Python along with some higher level explanation when reporting errors. `[<class 'decimal.ConversionSyntax'>]` would be such a strange message that I need to make a special case with decimal.

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nosy: +pekka.klarck

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<https://bugs.python.org/issue26208>
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