Functions for dealing with naive and aware dates

naive_aware.py

import datetime
from dateutil import tz

def isAware(dt):
    return dt.tzinfo is not None and \
           dt.tzinfo.utcoffset(dt) is not None
    
def makeAware(dt, tzinfo=None):
    if dt is None: return None
    if isAware(dt): return dt # already aware
    return dt.replace(tzinfo=tzinfo or tz.tzlocal())
 
def makeNaive(dt):
    if dt is None: return None
    if not isAware(dt): return dt # already naive
    return datetime.datetime(dt.year, dt.month, dt.day,
                             dt.hour, dt.minute, dt.second,
                             dt.microsecond) # everything except tzinfo