time-conversion.py

# https://www.hackerrank.com/challenges/one-week-preparation-kit-time-conversion/problem?isFullScreen=true&h_l=interview&playlist_slugs%5B%5D=preparation-kits&playlist_slugs%5B%5D=one-week-preparation-kit&playlist_slugs%5B%5D=one-week-day-one&h_r=next-challenge&h_v=zen&h_r=next-challenge&h_v=zen
#!/bin/python3

import math
import os
import random
import re
import sys

#
# Complete the 'timeConversion' function below.
#
# The function is expected to return a STRING.
# The function accepts STRING s as parameter.
#

def timeConversion(s):
    hour = s[:2]
    if s[-2:] == "AM" and hour == '12': 
        hour = "00" 
    if s[-2:] == "PM" and hour == '12': 
        hour = "12" 
    if s[-2:] == "PM" and hour != '12': 
        hour = str(int(hour) + 12) 
    
    return hour + s[2:-2]

    
if __name__ == '__main__':
    fptr = open(os.environ['OUTPUT_PATH'], 'w')

    s = input()

    result = timeConversion(s)

    fptr.write(result + '\n')

    fptr.close()