how to make a variable global in python function code example

Example 1: python global variables

global var1
var1 = 'whatever'

Example 2: global variable python

# Python global variable
# Probably should not use this, just pass in arguments

x = 0 # variable is in outer scope
print(x) # prints x (0)

def use_global_variables():
  # if using a global variable, the variable will not need to be mention while calling the function
  global x # calling the x variable from a function
  x += 1
  print(x) # prints x after adding one in the function (1)
  
use_global_variables

=============================================
# Output:
0
1

Example 3: global variable python

a = 0

def testFor():
  global a 
  if(a == 0):
    	#run code