Time Conversion (Python 3)

• URL : https://www.hackerrank.com/challenges/time-conversion/problem

• Given a time in 12-hour AM/PM format, convert it to military (24-hour) time.

• Note: Midnight is 12:00:00AM on a 12-hour clock, and 00:00:00 on a 24-hour clock. Noon is 12:00:00PM on a 12-hour clock, and 12:00:00 on a 24-hour clock.

• Function Description
  • Complete the timeConversion function in the editor below. It should return a new string representing the input time in 24 hour format.
• timeConversion has the following parameter(s):
  • s: a string representing time in 12 hour format
• Input Format
  • A single string s containing a time in 12-hour clock format (i.e.: hh:mm:ssAM or hh:mm:ssPM), where 01 <= hh <= 12 and 00<= mm,ss <= 59.
• Constraints
  • All input times are valid
• Output Format
  • Convert and print the given time in 24-hour format, where 00 <= hh <= 23.

문제 풀이

• 12시간 형식 hh:mm:ssAM or hh:mm:ssPM 으로 되어있는 날짜 타입을 24시간 형식으로 바꾸는 함수 작성
• 파이썬에는 datetime 모듈로 해결하면됨
• 12시간 형식이 저장된 s를 받고, datetime 형식으로 변경 뒤, H:M:S 형식을 리턴

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#!/bin/python3

import os
import sys
from datetime import *
#
# Complete the timeConversion function below.
#
def timeConversion(s):
    #
    # Write your code here.
    #
    m2 = datetime.strptime(s, '%I:%M:%S%p')
    return m2.strftime('%H:%M:%S')
         

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

    s = input()

    result = timeConversion(s)

    f.write(result + '\n')

    f.close()