Finding last date from a dates range by Python

finding.py

from datetime import date, timedelta, datetime

def month_in_range(start_date, end_date):
    """Get the last day of every month in a range between two datetime values.
    Return a generator
    """
    start_month = start_date.month
    end_months = (end_date.year-start_date.year)*12 + end_date.month
    date_obj = []
    for month in range(start_month, end_months + 2):
        # Get years in the date range, add it to the start date's year
        year = (month-1)//12 + start_date.year
        month = (month-1) % 12 + 1
        last_date = date(year, month, 1) - timedelta(days=1)
        date_obj.append(last_date)
        
    date_obj.pop(0)
    yield date_obj
    
for dates in month_in_range(date(2018, 1, 1), datetime.now()):
    for date in dates:
        print(date)