Add scope and namespace

Author: hermite2053

class/scope_and_namespace/main.py

@@ -0,0 +1,26 @@
+def testing_scope():
+    def local_var():
+        foo = 'local'
+        print(id(foo))
+
+    def nonlocal_var():
+        nonlocal foo
+        foo = 'nonlocal'
+        print(id(foo))
+
+    def global_var():
+        global foo
+        foo = 'global'
+        print(id(foo))
+
+    foo = 'testing'
+    print(id(foo))
+    local_var()
+    print('local ---->', foo, id(foo))
+    nonlocal_var()
+    print('nonlocal ---->', foo, id(foo))
+    global_var()
+    print('global ---->', foo, id(foo))
+
+testing_scope()
+print('in global ---->', foo, id(foo))