Types of variables in functions: python

Types of variables:-

We can define two types of variables in python. They are:

• global variables

• local variables

1)global variables:-

• The variables which are declared outside of the functions are known as global variables.

• global variables can be accessed in all the functions. In order to modify the global variables data within the functions we need to follow  forward declaration mechanism. 

Syntax:-

global  <global_variable_name>

x=0

def f1():

    global x

    x=x+1

    print("in f1")

    if x<=5:

        f1()

f1()

in f1

in f1

in f1

in f1

in f1

in f1

2)local variables:-

• The variables which are declared within the function are known as local variables. 

• Local variables of one function cannot be accessed in  other functions.

z=300

def f1():

    x=100

    print(x)

    global z

    print(z)

    z=400

    print("in f1")

def f2():

    y=200

    print(y)

    print(z)

    print("in f2")

f1()

f2()

100

300

in f1

200

400

in f2