Question

I have a function that returns a number. I want to assign a variable to have this value, but python gives a runtime error when I say temp = foo(i, j) : NameError: name ‘foo’ is not defined. Note that I’ve changed the function bodies of bar and foo around, obviously having a function that just returns 1 is useless, but it doesn’t change my error.

sum = 0
for i in range(2, 100):
    for j in range(2, i):
        temp = foo(i, j)
        if (temp > 100):
            sum = sum + 1
print sum

def bar (n, a):
    r = 1
    return r

def foo (n, a):
    s = bar(n, a)/factorial(5);
    return s

def factorial (n):
    r = 1
    for i in range (2, n + 1):
        r *= i;
    return r

Answer 1

Names in Python do not exist until they are bound. Move the def foo(...): block above the code that uses foo().