You can use dateutil.parser module which will parse any human readable date format for you from a string.
http://labix.org/python-dateutil#head-a23e8ae0a661d77b89dfb3476f85b26f0b30349c
Pergunta
In Python, Is there a way to definitively check if a string contains a date.? It would be preferable if it could catch any date format, but, if not, could it catch the %B-%w-%Y format.
Solução
You can use dateutil.parser module which will parse any human readable date format for you from a string.
http://labix.org/python-dateutil#head-a23e8ae0a661d77b89dfb3476f85b26f0b30349c