edenau · January 18, 2020 21:25
diff --git a/mistakes-global.py b/mistakes-global.py
 a = 1 # a variable    

 def increment():
    a += 1
    return a

 def increment2():
    global a # can make changes to global variable "a"
    a += 1 
    return a
  
 increment()  # UnboundLocalError: local variable 'a' referenced before assignment
 increment2() # returns 2
	a = 1 # a variable

	def increment():
	a += 1
	return a

	def increment2():
	global a # can make changes to global variable "a"
	a += 1
	return a

	increment() # UnboundLocalError: local variable 'a' referenced before assignment
	increment2() # returns 2