Python 2.7 try and except ValueError

Question

I query user input which is expected to be an int by using int(raw_input(...))

However when the user doesn\'t enter an integer, i.e. just hits return, I get a ValueError

Answer 1

Is something like this what you're going for?

def inputValue(inputMatrix, defaultValue, playerValue):
    while True:
        try:
            rowPos = int(raw_input("Please enter the row, 0 indexed."))
            colPos = int(raw_input("Please enter the column, 0 indexed."))
        except ValueError:
            continue
        if inputMatrix[rowPos][colPos] == defaultValue:
            inputMatrix[rowPos][colPos] = playerValue
            break
    return inputMatrix

print inputValue([[0,0,0], [0,0,0], [0,0,0]], 0, 1)

You were right to try and handle the exception, but you don't seem to understand how functions work... Calling inputValue from within inputValue is called recursion, and it's probably not what you want here.