nested functions in python

1var = 0
2name = 'absicsa'
3 
4def function_outer():
5   # global var    ; no need to declare to call the value
6   name = 'nabisco'
7 
8   def function_inner():
9       global var  # need to declare global to modify the value
10       name = 'outlet'
11       var = 23
12       print('name :',name, ', var :', var)
13 
14   print('name :', name, ', var :', var)
15   function_inner()
16 
17print('name :', name, ', var :', var)
18function_outer()
19#>>> name : absicsa , var : 0
20#>>> name : nabisco , var : 0
21#>>> name : outlet , var : 23

1def print_msg(msg):
2    # This is the outer enclosing function
3
4    def printer():
5        # This is the nested function
6        print(msg)
7
8    return printer  # returns the nested function
9
10
11# Now let's try calling this function.
12# Output: Hello
13another = print_msg("Hello")
14another()