python check if string is date format
>>> import datetime >>> def validate(date_text): try: datetime.datetime.strptime(date_text, '%Y-%m-%d') except ValueError: raise ValueError("Incorrect data format, should be YYYY-MM-DD") >>> validate('2003-12-23') >>> validate('2003-12-32') Traceback (most recent call last): File "<pyshell#20>", line 1, in <module> validate('2003-12-32') File "<pyshell#18>", line 5, in validate raise ValueError("Incorrect data format, should be YYYY-MM-DD") ValueError: Incorrect data format, should be YYYY-MM-DD