Python Divide by 0 Error

Question

I am currently using this Python code:

valid_chars = \"0123456789-+/* \\n\";
while True:
    x = \"x=\"
    y = input(\" >> \")
    x += y
    if False in          


        

Answer 1

The real problem is that you are executing exec() twice. The first time you execute it on the string you have constructed, and this replaces the value of x with the result of your entered expression. So the second time you are presumably trying to run exec(64). Look more carefully at the logic flow around try: ... except: ... else.

The simplest fix is to start with

x = "z="

and then print z rather than x. This should not stop you working to avoid the duplicated execution of your code.