scope of global variable in python code example

Example 1: python access global variable

globvar = 0

def set_globvar_to_one():
    global globvar    # Needed to modify global copy of globvar
    globvar = 1

def print_globvar():
    print(globvar)     # No need for global declaration to read value of globvar

set_globvar_to_one()
print_globvar()       # Prints 1

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: how to make a variable global in python

x = 5 #Any variable outside a function is a global variable

def GLOBAL():
	global y #if a variable is inside a function, use the 'global' keyword
    y = 10 # now this variable (y) is global

Example 4: global variable python

a = 0

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

Example 5: global var in python

a = input('Hello: ')
if a == 'world':
  global b
  b = input('Here')
print b
#Prints the input for be as a result