Global and Local Variable in Python

Global and local variables in python; Through this tutorial, i am going to show you what is global and local variables in python and what are difference between global and local variables in python.

Python Global and Local Variable

  • Local Variable
  • Global Variable
  • Difference between global and local variables in python

Local Variable

Which variables are made inside the function in python; They are called local variables.

Note that; Local variables can be used only inside the function in python.

For example:

def valfun():
   x = "great"
   print("Python is " + x)
 valfun()

Global Variable

Which variables are made outside the function’ They are called global variables.

Note that; Global variables can be used both inside and outside the function in python.

Declaring global variables in python without using global keyword

For example:

x = "great"
 def valfun():
   print("Python is " + x)
 valfun()

Declaring global variables in python using global keyword

Generally, when you create a variable in python inside any function, that is local variable. And you can not use this variable outside of the function.

You can create/define a global variable inside the function by using the global keyword.

For example:

def valfun():
   global x
   x = "powerful"
 valfun()
 print("Python is " + x)

Difference between global and local variables in python

Global variables are variables declared outside a function. Local variables are variables declared inside a function. While global variables cannot be directly changed in a function, you can use the global keyword to create a function that will change the value of a global variable.

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