random_date_generator.py

import random


month_map = {
    'january': 1,
    'february': 2,
    'march': 3,
    'april': 4,
    'may': 5,
    'june': 6,
    'july': 7,
    'august': 8,
    'september': 9,
    'october': 10,
    'november': 11,
    'december': 12
}

month_short = {
    'jan':'january',
    'feb':'february',
    'mar':'march',
    'apr':'april',
    'may':'may',
    'jun':'june',
    'jul':'july',
    'aug':'august',
    'sept':'september',
    'oct':'october',
    'nov':'november',
    'dec':'december'
}

calendar_days = list(range(1, 32))

days_of_week = {
    'monday': 0,
    'tuesday': 1,
    'wednesday': 2,
    'thursday': 3,
    'friday': 4,
    'saturday': 5,
    'sunday': 6
}

short_day_name = {
    'mon': 'monday',
    'tue': 'tuesday',
    'wed': 'wednesday',
    'thu': 'thursday',
    'fri': 'friday',
    'sat': 'saturday',
    'sun': 'sunday'
}

day_subscripts = {
    '1': 'st',
    '2': 'nd',
    '3': 'rd''
}


def title_case(string):
    return string[0].upper() + string[1:]

def zero_padding(number):
    return '0{}'.format(number) if number < 10 else str(number)

def date_subscript(number):
    return 'th'\
    if int(number) > 10 and int(number) < 20 \
    else day_subscripts.get(str(number)[-1], 'th')


def random_date_generator():
    random_year = random.randint(2018, 2020)
    delimiters = [' ']
    month_reps = list(month_map.keys()) + list(month_short.keys())
    random_month_string = random.choice(month_reps) 
    if random.random() > 0.5:
        random_month = random_month_string if random.random() > 0.5 else title_case(random_month_string)
    else:
        random_month = str(month_map.get(random_month_string, 1))
        delimiters.extend(['-', '/'])
    random_day = random.choice(calendar_days)
    random_day = zero_padding(random_day) if random.random() > 0.5 else str(random_day)
    random_day_subscript = date_subscript(random_day) if random.random() > 0.5 else ''
    random_delimiter = random.choice(delimiters)
    return '{random_day}{random_day_subscript}{delimiter}{random_month}{delimiter}{random_year}'.format(
        random_day=random_day,
        random_day_subscript=random_day_subscript,
        delimiter=random_delimiter,
        random_month=random_month,
        random_year=random_year
    )