Scope of a variable in python

Question

In python, local variable can be accessed only inside a block. According to python block will start with :[colon] and all the statements inside the block will have same indentation. But in for loop and in if statement am using a local variable and its able to access outside the block. Can anyone explain how its possible. Code is as follows:

def a():
    for i in range(0,4):
        i=i+1
    print(i)
    if(True):
        ii=10
        print("Inside",ii)
    print("Outside",ii)
a()

Output:
4
Inside 10
Outside 10

score 0 · Answer 1 · answered Oct 06 '15 at 09:26

0

Your assertion that "local variable can be accessed only inside a block" is just not true in Python, as your code demonstrates.

The only things that introduce scope in Python are modules, classes, and functions.

answered Oct 06 '15 at 09:26

Daniel Roseman

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Ya i understood that, but still For and if also considered as block right? – Mathan Oct 06 '15 at 09:27
@Mathan yes, they are blocks, *but not scopes*. See also http://stackoverflow.com/q/291978/3001761. – jonrsharpe Oct 06 '15 at 09:29
Thank you for your input. – Mathan Oct 06 '15 at 09:51

Scope of a variable in python

1 Answers1