In Python, why is list[] automatically global?

Question

This is a weird behavior.

Try this :

rep_i=0
print \"rep_i is\" , rep_i
def test():
  global rep_i #without Global this gives error but list , dict ,         


        

Answer 1

Here's an example that demonstrates that a non list/dict variable is available in a subroutine, and the problem is, as everyone says, the act of rebinding in your original code sample:

x = 1
def test():
    y = x + 1
    print y
test()

You'll see this prints out 2, despite x not being declared global.