global variable within function python code example

Example 1: 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 2: python local variables

'''Local variables are those that are defined in a block '''
a = 1 #This is NOT a local variable, this is a global variable
def add():
  b = 1 #This IS a local variable
  print(b)
add()
#If we tried to print(b) outside of the add() function, we would get an error

Example 3: how to global variables in python

def Takenin():
  global ans 
  ans = "This is the coorect way to do it"

def Return():
    Takenin()
    print(f"ans :{ans}")