arithmetic_function.py 오류

cmd 에서 arithmetic_function.py 를 실행할 경우, 아래와 같은 오류값이 나옵니다.

C:\Users\socar\workspace\python_mooc\lab_1_windows\windows>python arithmetic_function.py

  File "arithmetic_function.py", line 19

    result = a/b

         ^

IndentationError: expected an indented block

무엇이 문제일까요?

atom 에서 작성한 것은 다음과 같습니다.

# -*- coding: utf8 -*-

def addition(a, b):

    result = a+b

    return result

def minus(a, b):

    result = a-b

    return result

def multiplication(a, b):

    result =  a*B

    return result

def division(a, b):

result = a/b

    return result

def main():

    print ("Addition Test")

    print (addition(3,5)) # Expected Result: 8

    print (addition(10,5) == 15) # Expected Result: True

    print ("Addition Test Closed \n")

    print ("Minus Test")

    print (minus(3,5)) # Expected Result: -2

    print (minus(10,5) == 5) # Expected Result: True

    print (minus(10,15) == 5) # Expected Result: False

    print ("Addition Test Closed \n")

    print ("Multiplication Test")

    print (multiplication(3,5)) # Expected Result: 15

    print (multiplication(10,5) == 50) # Expected Result: True

    print (multiplication(10,-3) == 20) # Expected Result: False

    print ("Addition Test Closed \n")

    print ("division Test")

    print (division(5,5)) # Expected Result: 1

    print (division(5,4)) # Expected Result: 1.25

    print (division(10,5) == 2) # Expected Result: True

    print (division(10,-3) == 0.33333) # Expected Result: False

    print ("division Test Closed \n")

if __name__ == "__main__":

    main()

감사합니다.