Update III Decorators.py

Author: ortizfram

Writing Functions in Python/III Decorators.py

@@ -1 +1,70 @@
+"""**********************************************************************************************************************************************************
+Decorators are an extremely powerful concept in Python. They allow you to modify the behavior of a function without changing the code of the function 
+itself. This chapter will lay the foundational concepts needed to thoroughly understand decorators (functions as objects, scope, and closures),
+and give you a good introduction into how decorators are used and defined
 
+Functions are objects
+=====================
+
+**********************************************************************************************************************************************************"""
+## Building a command line data app
+
+# Add the missing function references to the function map
+function_map = {
+  'mean': mean,
+  'std': std,
+  'minimum': minimum,
+  'maximum': maximum
+}
+
+data = load_data()
+print(data)
+
+func_name = get_user_input()
+
+# Call the chosen function and pass "data" as an argument
+function_map[func_name](data)
+"""!!!
+By adding the functions to a dictionary, you can select the function based on the user's input."""
+#`````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````
+## Reviewing your co-worker's code
+
+# Call has_docstring() on the load_and_plot_data() function
+ok = has_docstring(load_and_plot_data)
+
+"""if doesnt have doc string """
+if not ok:
+  print("load_and_plot_data() doesn't have a docstring!")
+else:
+  print("load_and_plot_data() looks ok")
+  
+#  load_and_plot_data() looks ok
+  
+## Reviewing your co-worker's code 2
+  
+# Call has_docstring() on the as_2D() function
+"""check if 2D has docstring"""
+ok = has_docstring(as_2D)
+
+if not ok:
+  print("as_2D() doesn't have a docstring!")
+else:
+  print("as_2D() looks ok")
+
+#   as_2D() looks ok
+  
+## Reviewing your co-worker's code 3
+
+# Call has_docstring() on the log_product() function
+ok = has_docstring(log_product)
+
+if not ok:
+  print("log_product() doesn't have a docstring!")
+else:
+  print("log_product() looks ok")
+
+# log_product() doesn't have a docstring!
+
+"""!!!
+co-worker forgot to write a docstring for log_product(),
+To pass a function as an argument to another function, you had to determine which one you were calling and which one you were referencing."""