GLOBAL AND LOCAL VARIABLES IN PYTHON

Global Variables – The variables which are declared outside of the function are called as global variable. Global variables of one module can be used throughout the module.

Example –

a=100
def f1():
    print a
def f2():
    print a
f1()
f2()

Output –

100

100

Local Variables – The variables which are declared within a function are known as local variables. Local variables of one function cannot be accessed outside of that function.

Example –

def f1():
    a=100
    print adef f2():
    print a
    a=200f1()
f2()

Output –

100

Traceback (most recent call last):

  File "C:/Users/om/PycharmProjects/Pythonn/if3.py", line 8, in <module>

    f2()

  File "C:/Users/om/PycharmProjects/Pythonn/if3.py", line 5, in f2

    print a

UnboundLocalError: local variable 'a' referenced before assignment