16.01.18 11:38, smarie пише:
You can find my attempt to do that in the valid8 project
https://smarie.github.io/python-valid8
<https://smarie.github.io/python-valid8>, with the 'assert_valid(...)'
function. With the current language limitations I could not define
something as simple as 'validate <expression> <exception, exception_type
or exception_message>', but I created a mini lambda library to at least
keep some level of simplicity for the <expression>. The result is for
example :
class InvalidSurface(ValidationError):
help_msg = 'Surface should be a positive number'
assert_valid('surface', surf, x > 0, error_type=InvalidSurface)
What is the advantage over the simple
if not x > 0: raise InvalidSurface('surface')
?
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