Contains useful datetime related functions...

date_utils.py

import datetime as dt
from datetime import datetime
import pytz

def local_datetime(timezone = 'Asia/Calcutta'):
    """
    Returns the local time based on provided timezone.
    """
    utc = datetime.utcnow()
    tz = pytz.timezone(timezone)
    return tz.fromutc (utc) 

def add_days(date_time, days):
    """
    Add the new date after adding specified numbers of days to provided date_time.
    """
    return date_time + dt.timedelta(days)

def add_months(date_time, months):
    """
    Add the new date after adding specified numbers of months to provided date_time.
    """
    return date_time + dt.timedelta(months*365/12)