bath schedule

#!/usr/bin/env python
import datetime
from random import shuffle
from collections import OrderedDict

def date_range(start_date, end_date):
    """
    returns a datetime object for a range of dates
    """
    if start_date <= end_date:
        for dt in range( ( end_date - start_date ).days + 1 ):
            yield start_date + datetime.timedelta( dt )
    else:
        for dt in range( ( start_date - end_date ).days + 1 ):
            yield start_date - datetime.timedelta( dt )


def date_dict(start_date, end_date):
    """
    creates a dictionary where the keys are
    dates from the supplied range with the
    order preserved
    """
    dt_dict = OrderedDict()
    for date in date_range(start_date, end_date):
        dt_dict[str(date)] = ''
    return dt_dict

def random_list2dict_apply(my_dict, my_list):
    """
    takes a list and shuffles it, then puts it
    in to the key values of the supplied dictionary
    when a list item is applied, it is then popped,
    when the list runs out, it is refreshed and the
    process starts over again until the end of the
    dictionary
    """
    shfl_lst = list(my_list)
    shuffle(shfl_lst)

    for key in my_dict:
        if len(shfl_lst) != 0:
            my_dict[key] = shfl_lst[0]
            shfl_lst.pop(0)
        else:
            shfl_lst = list(my_list)
            shuffle(shfl_lst)
            my_dict[key] = shfl_lst[0]
            shfl_lst.pop(0)

    return my_dict

def main():

    start_date = datetime.date( year = 2017, month = 2, day = 1 )
    end_date = datetime.date( year = 2017, month = 3, day = 1 )
    arbitrary_list = ['Davidson', 'Gabrielle', 'Shane']

    dt_range_dict = date_dict(start_date, end_date)

    randomized_value_dict = random_list2dict_apply(dt_range_dict, arbitrary_list)
    for key, value in randomized_value_dict.items():
         print (key, value)
main()