added nested function & closure👩‍💻

rahulhgdev · web-flow · commit b9eafb0c4483 · 2021-01-20T14:48:31.000+05:30
diff --git a/Beginner_Level/Closure  + Nested Function/anotherclosureexample.py b/Beginner_Level/Closure  + Nested Function/anotherclosureexample.py
@@ -0,0 +1,28 @@
+
+def nth_power(exponent ):
+    def pow_of(base):
+        return pow(base, exponent)
+    return pow_of                           # note that we are returning function without function
+
+square = nth_power(2)
+print(square(31))
+print(square(32))
+print(square(33))
+print(square(34))
+print(square(35))
+print(square(36))
+print(square(37))
+print(square(38))
+print(square(39))
+
+print('------')
+
+cube = nth_power(3)
+print(cube(2))
+print(cube(3))
+print(cube(4))
+print(cube(5))
+print(cube(6))
+print(cube(7))
+print(cube(8))
+print(cube(9))
diff --git a/Beginner_Level/Closure  + Nested Function/closure.py b/Beginner_Level/Closure  + Nested Function/closure.py
@@ -0,0 +1,12 @@
+# nested function u can define function inside a fucntion
+
+# closures are sometimes uses in the placeof classes which usually have only one method or few method . Closures are highly used in decorators   
+
+def outterFunction(text):
+    def innerFunction():
+        print(text)
+    return  innerFunction     # to make closure fucntion from nested function you have to return function without paranthesis
+
+a = outterFunction("Hello")
+del outterFunction
+a()                      # after deleting outterfunction o/p - Hello means a variable is sotring some spaces for innerfunction even outterfunction is deleted this is magic of 'closure'
diff --git a/Beginner_Level/Closure  + Nested Function/nested.py b/Beginner_Level/Closure  + Nested Function/nested.py
@@ -0,0 +1,11 @@
+def pop(list):
+    def get_last_item(my_list):
+        return my_list[len(list) - 1]
+
+    list.remove(get_last_item(list))
+    return list
+
+a = [1,2,3,4,5]
+print(pop(a))
+print(pop(a))
+print(pop(a))
