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Added multiple choice for session 7 and updated content
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‎session_07/exercises/multiple_choice_7.md

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# KPMG:Code - Session 7 - Multiple Choice Questions
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1. What is a dictionary in Python?
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1. What is a function in Python?
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- a way to allow user input
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- a statement that allows a computer to make a decision
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- a way to print an output
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- a collection of data - A
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- re-usable, self-contained blocks of code that do a single task - A
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- a collection of data
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2. What key word defines a function?
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- def - A
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- input
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- print
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- parameter
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3. How would I call the following function:
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def hello_world():
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print("Hello World!")
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- hello_world
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- hello world ()
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- hello_world() - A
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- hello world
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4. What does the principle of 'DRY' stand for?
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- do repeat yourself
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- don't repeat yourself - A
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- do return yourself
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- don't reload yourself
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5. What is name classed as here:
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def hello(name):
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print("Hello, " + name + "!")
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- function
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- string
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- parameter - A
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- class
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2. What brackets does a dictionary use?
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- {} - A
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- ()
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- []
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- <>
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6. What would be the ouput of the below:
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def hello(name):
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print("Good Morning, " + name)
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3. A dictionary is an unordered collection of data.
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- True - A
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- False
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hello("Grace")
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4. A tuple can be modified
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- True
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- False - A
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- Grace
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- Good Morning Grace Hopper
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- Good Morning Grace - A
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- good morning Grace
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5. What will be the output of the below:
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shirt = {
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"size": "Large",
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"colour": "Red"
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}
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7. What would be the ouput of the below:
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def volume(x, y, z):
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print("The volume is " + str(x * y * z))
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print(shirt["size"])
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volume(12, 4, 6)
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- size
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- colour
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- Large
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- Red
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- 228
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- 288 - A
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- 114
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- 144
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6. What would be the ouput of the below:
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contacts = [
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{"fname": "Ada", "lname": "Lovelace"},
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{"fname": "Alan", "lname": "Turing", "phone": "555-1234"},
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{"fname": "Steve", "lname": "Shirley"}
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]
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for person in contacts:
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if "phone" in person:
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print(person["fname"])
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- Ada
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- Alan
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- Steve - A
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- 555-1234
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7. What will stop this while loop:
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contacts = []
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fname = None
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while fname != "":
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fname = input("What is your first name? ")
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lname = input("What is your last name? ")
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if fname and lname:
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contacts.append({
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"fname": fname,
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"lname": lname
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})
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- nothing, it will run forever
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- entering a first name
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- not entering a first name
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- not entering a first name and last name
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8. Items in a dictionary are called _____ pairs.
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- key, value - A
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- value, key
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- key, arguments
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- value, arguments
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9. What will be the output of the below:
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shirt = {
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"size": "Large",
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"colour": "Red"
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}
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shirt["colour"] = "Green"
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- adds a new key/value
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- changes an existing value - A
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- deletes the key/value pair
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- prints out the dictionary
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8. What is returning, in relation to functions?
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- return is a keyword - A
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- return is a function
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- return is a input
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- return is a parameter
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9. Which of the below will stop the execution a function?
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- print
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- return - A
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10. What will be the output of the below:
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shirt = {
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"size": "Large",
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"colour": "Red"
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}
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def calc_factorial(x):
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if x == 1:
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return 1
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else:
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return (x * calc_factorial(x - 1))
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num = 4
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del(shirt["size"])
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print(calc_factorial(num))
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- adds a new key/value
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- changes an existing value
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- deletes the key/value pair - A
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- prints out the dictionary
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- 4
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- None
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- 24 - A
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- 6

‎session_07/slides/session_7.md

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# Functions — Print vs Return
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- print is a function you call. Use print when you want to show a value to a human.
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- 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.
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- Using return changes the flow of the program. Using print does not.
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---
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# Functions — Returning
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```python

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