Hey, i'm doing the optional exercises of hw1 of 6.189 ( A gentle Intro to programming with python) OPT.1 Zeller's Algorithm: I'm getting the following error when inputing X Y W Z: " Traceback (most recent call last): File "C:/Python26/MIT Homework/zellers.py", line 10, in W= (13*A-1)/5 TypeError: unsupported operand type(s) for -: 'str' and 'int' "

Question

Hey, i'm doing the optional exercises of hw1 of 6.189 ( A gentle Intro to programming with python) OPT.1 Zeller's Algorithm: I'm getting the following error when inputing X Y W Z:
" Traceback (most recent call last):
  File "C:/Python26/MIT Homework/zellers.py", line 10, in <module>
    W= (13*A-1)/5
TypeError: unsupported operand type(s) for -: 'str' and 'int'  "

anonymous · Answer

There is a problem with the value type I believe.

check with : W = (13 * int(A) - 1)/5

the function int() change a string into an integer.
Can you show your code if you still have an issue ?

anonymous · Answer

thank you that was exactly it! i was using raw_input instead of int(input