Scope of a variable in python [duplicate]

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

Daniel Roseman · Accepted Answer · 2015-10-06 09:26:29Z

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 6, 2015 at 9:26

Daniel Roseman

602k68 gold badges910 silver badges923 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Mathan Over a year ago

Ya i understood that, but still For and if also considered as block right?

jonrsharpe Over a year ago

@Mathan yes, they are blocks, but not scopes. See also stackoverflow.com/q/291978/3001761.

Collectives™ on Stack Overflow

Scope of a variable in python [duplicate]

1 Answer 1

2 Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Linked

Related