Program to ask multiplication questions

Question

I intend to make a program in Python (2.7.14) that generates two numbers randomly (from 0 to 10), multiply them, ask the result for the user, and display whether the result is correct or wrong, until typed the string "end", my code went like this:

    import random

    m = 0

    while m!="fim" :
        n1=int(random.random()*10)
        n2=int(random.random()*10)

        m = raw_input("{} * {} = ".format(n1,n2))  
        mult = int(n1*n2)

        if m==mult :
            print "correto!"

        else :
            print "errado!!"

However, whenever I type something, the program always prints "wrong!!", What is the error in my code? Is it well written? Is it possible to optimize it more? If yes , as?

Answer 1

If you do type(m) and type(mult) will see that the first is a str while the second is int.

To solve just modify the if, making a conversion of the variable m for whole:

if int(m)==mult :
    print "correto!"
else :
    print "errado!!"

Answer 2

There are some problems, besides being comparing a string with a number, letting you type a text where you expect a number does not seem like a good idea. Of course you can handle the generated exception. It would not be a bad idea since it is a possible error. But to simplify I preferred only to change the entry indicating the end.

The numbers generated were also wrong, generating 0 that I imagine is not what you want, since this seems to be a case of multiplication tables. If you really want 0, you can go back to 10 as it was.

import random
m = 1
while m != 0:
    n1 = int(random.random() * 9) + 1
    n2 = int(random.random() * 9) + 1
    m = int(raw_input("{} * {} = ".format(n1, n2)))
    print ("correto!" if m == n1 * n2 else "errado!!")

See working on ideone. And in the repl it.. Also put on the Github for future reference.