Added multiple choice for session 7 and updated content

smirza3 · smirza3 · commit 0d32564aef44 · 2022-11-21T09:31:07.000Z
diff --git a/session_07/exercises/multiple_choice_7.md b/session_07/exercises/multiple_choice_7.md
@@ -1,102 +1,87 @@
 # KPMG:Code - Session 7 - Multiple Choice Questions
 
-1. What is a dictionary in Python?
+1. What is a function in Python?
 - a way to allow user input
 - a statement that allows a computer to make a decision
-- a way to print an output
-- a collection of data - A 
+- re-usable, self-contained blocks of code that do a single task - A
+- a collection of data
+
+2. What key word defines a function?
+- def - A
+- input
+- print
+- parameter
+
+3. How would I call the following function:
+def hello_world():
+    print("Hello World!")
+
+- hello_world
+- hello world () 
+- hello_world() - A 
+- hello world
+
+4. What does the principle of 'DRY' stand for?
+- do repeat yourself 
+- don't repeat yourself - A
+- do return yourself
+- don't reload yourself
+
+5. What is name classed as here:
+def hello(name):
+    print("Hello, " + name + "!")
+
+- function
+- string
+- parameter - A
+- class
 
-2. What brackets does a dictionary use?
-- {} - A
-- ()
-- [] 
-- <>
+6. What would be the ouput of the below:
+def hello(name):
+    print("Good Morning, " + name)
 
-3. A dictionary is an unordered collection of data.
-- True - A 
-- False 
+hello("Grace")
 
-4. A tuple can be modified
-- True 
-- False - A 
+- Grace
+- Good Morning Grace Hopper
+- Good Morning Grace - A
+- good morning Grace
 
-5. What will be the output of the below:
-shirt = {
-    "size": "Large",
-    "colour": "Red"
-}
+7. What would be the ouput of the below:
+def volume(x, y, z):
+    print("The volume is " + str(x * y * z))
 
-print(shirt["size"])
+volume(12, 4, 6)
 
-- size
-- colour
-- Large
-- Red
+- 228 
+- 288 - A  
+- 114 
+- 144
 
-6. What would be the ouput of the below:
-contacts = [
-    {"fname": "Ada", "lname": "Lovelace"},
-    {"fname": "Alan", "lname": "Turing", "phone": "555-1234"},
-    {"fname": "Steve", "lname": "Shirley"}
-]
-
-for person in contacts:
-    if "phone" in person:
-        print(person["fname"])
-
-- Ada
-- Alan
-- Steve - A
-- 555-1234
-
-7. What will stop this while loop:
-contacts = []
-fname = None
-
-while fname != "":
-    fname = input("What is your first name? ")
-    lname = input("What is your last name? ")
-
-    if fname and lname:
-        contacts.append({
-            "fname": fname,
-            "lname": lname
-        })
-
-- nothing, it will run forever
-- entering a first name  
-- not entering a first name 
-- not entering a first name and last name
-
-8. Items in a dictionary are called _____ pairs.
-
-- key, value - A 
-- value, key
-- key, arguments
-- value, arguments   
-
-9. What will be the output of the below: 
-shirt = {
-    "size": "Large",
-    "colour": "Red"
-}
-
-shirt["colour"] = "Green"
-
-- adds a new key/value
-- changes an existing value - A 
-- deletes the key/value pair
-- prints out the dictionary 
+8. What is returning, in relation to functions?
+
+- return is a keyword - A 
+- return is a function
+- return is a input
+- return is a parameter 
+
+9. Which of the below will stop the execution a function? 
+
+- print
+- return - A 
 
 10. What will be the output of the below: 
-shirt = {
-    "size": "Large",
-    "colour": "Red"
-}
+def calc_factorial(x):
+    if x == 1:
+        return 1
+    else:
+        return (x * calc_factorial(x - 1))
+
+num = 4
 
-del(shirt["size"]) 
+print(calc_factorial(num))
 
-- adds a new key/value
-- changes an existing value
-- deletes the key/value pair - A
-- prints out the dictionary
+- 4
+- None
+- 24 - A
+- 6
diff --git a/session_07/slides/session_7.md b/session_07/slides/session_7.md
@@ -389,6 +389,16 @@ def <function_name>(<param_1>, <param_2>, ...):
 
 ---
 
+# Functions — Print vs Return
+
+- print is a function you call. Use print when you want to show a value to a human.
+
+- return is a keyword. When a return statement is reached, Python will stop the execution of the current function, sending a value out to where the function was called. Use return when you want to send a value from one point in your code to another.
+
+- Using return changes the flow of the program. Using print does not.
+
+---
+
 # Functions — Returning
 
 ```python
