number_of_vowels_in_given_string.py

import re
import timeit

def count_vowels_loop_over_vowels(text):
    vowel_count = 0

    for vowel in vowels_list:
        count = text.count(vowel)
        vowel_count += count

    return vowel_count


def count_vowels_loop_over_string(text):
    vowel_count = 0

    for char in text:
        if char in vowels_list:
            vowel_count += 1

    return vowel_count


def count_vowels_map(text):
    return sum([*map(text.count, vowels_list)])


def count_vowels_list_comprehension(text):
    return sum([text.count(x) for x in 'aeiou'])


def count_vowels_regex(text):
    return len(re.findall('a|e|i|o|u', text))


def count_vowels_regex_sub(text):
    total_text_length = len(text)
    vowel_replaced_string = re.sub("[aeiou]", "", text)
    replaced_string_length = len(vowel_replaced_string)

    return total_text_length - replaced_string_length


def count_vowels_regex_subn(text):
    return re.subn('[aeiou]', "", text)[1]

vowels_list = ['a', 'e', 'i', 'o', 'u']

fp = open('input_text.txt','r')
user_input = fp.read().replace('\n','').lower()
total_char = (len(user_input))

print(f"Function Name,Execution Time,Total Char, Number of Vowels")
function_ist = ['count_vowels_loop_over_vowels','count_vowels_map','count_vowels_list_comprehension', 'count_vowels_regex','count_vowels_regex_sub',
                  'count_vowels_regex_subn','count_vowels_loop_over_string']
for function_name in function_ist:
    start_time = timeit.default_timer()
    result = eval(f"{function_name}('{user_input}')")
    end_time = timeit.default_timer()
    print(f"{function_name},{end_time - start_time},{total_char},{result}")