On Sat, May 21, 2016 at 01:34:20PM -0500, Saidov wrote: > "decimal.InvalidOperation was unhandled by user code > Message: [<class 'decimal.ConversionSyntax'>]" > > *Question: *I tried looking up the meaning of this error, but couldn't find > anything on the internet. *Can someone help me understand what's wrong with > my code?*
https://duckduckgo.com/html/?q=decimal+InvalidOperation+python will take you to the docs for Python 2. Changing the URL to version 3 gives us: https://docs.python.org/3/library/decimal.html and searching for InvalidOperation gives us: https://docs.python.org/3/library/decimal.html#decimal.InvalidOperation which is not a lot of help as it only lists *some* of the things which will lead to that error, but we can try it at the interactive interpreter: py> import decimal py> decimal.Decimal("25") Decimal('25') py> decimal.Decimal("25x") Traceback (most recent call last): File "<stdin>", line 1, in <module> decimal.InvalidOperation: [<class 'decimal.ConversionSyntax'>] So the problem here is that when you call Decimal() with an invalid argument, you are expecting a ValueError, but Python raises decimal.InvalidOperation instead: > try: > expenses[ts.Date(row[0]).month] += decimal.Decimal(row[4]) > except ValueError: > pass -- Steve _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
