Maksim Kasimov wrote: > what is the "pythonic" way to check is the date/time value in the given > periods range?
Something like this, though I won't make strong claims of "pythonicness". If you want to use the "in" keyword you'll want a custom class and overriding of __contains__. import time from datetime import datetime def make_datetime(s, fmt='%Y-%m-%d %H:%M'): '''convert string to datetime''' ts = time.mktime(time.strptime(s, fmt)) return datetime.fromtimestamp(ts) def inRange(s, ranges): dt = make_datetime(s) for begin,end in ranges: if begin <= dt <= end: return True else: return False ranges = [(make_datetime(b), make_datetime(e)) for (b,e) in [ ('2005-06-08 12:30', '2005-06-10 15:30'), ('2005-06-12 12:30', '2005-06-14 15:30'), ]] print inRange('2005-06-11 12:30', ranges) -- http://mail.python.org/mailman/listinfo/python-list