Math Class

Challenge
Use the programming interface to complete this task. You’ll be given a math expression, such as add 1 2 or subtract 5 3, where you will perform the operations 1+2 and 5-3, respectively.

ID: math-class
Input: An expression in the form of operation operand1 operand2, separated by spaces. Read input from math-class.in.
Output: The absolute value of the evaluated expression. Your output should always be a positive integer.

There are only 2 different possible operations, addition and subtraction, and all operands will be integer values between 1 and 1000. As always, remember to end your program with a newline.

Solution

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fout=open("math-class.out",'w+')
expressions= open("math-class.in").readline().rstrip('\n').split(',')

count=0
for e in expressions:
    ex=e.split(' ')
    if count:
        fout.write(',')
    if ex[0]=="add":
        fout.write(str(abs(int(ex[1])+int(ex[2]))))
    else:
        fout.write(str(abs(int(ex[1])-int(ex[2]))))
    count+=1

fout.write('\n')
fout.close()

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