Python variable scopes

Question

I am just a Python challenger, but I also want to learn something and here is the question:

c = 5
def b(x):
c += x
b(c)
print (c)

This will not work, now how to access c from within b() so it's value can be changed there?

Thanks

Answer 1

c = 5
def b(x):
global c
c += x
b(c)
print(c)