your_birthday_in_pi.py

#! pyhton3

def get_file_as_line(filename):
    """Returns the whole content of a file as one line"""
    print('Read file: {0}'.format(filename))
    with open(filename) as file_object:
        lines = file_object.readlines()
    content_string = ''
    for line in lines:
        content_string += line.rstrip()

    return content_string

def get_birthday_from_user_input():
    """Returns the birthday of a user in the format: ddMMyyyy"""
    birthday = input('Enter your birthday, in the form ddMMyyyy: ')

    return str(birthday)

filename = 'data_pi.txt'

#print(get_file_as_line(filename))

birthday = get_birthday_from_user_input()
pi_string = get_file_as_line(filename)
    
if birthday in pi_string:
    print('Your birthday appears in the first million digits of pi!')
else:
    print('Your birthday does not appear in the first million digits of pi.')