Turning a flowchart into Python

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Quick Questions

Shade in the A or B circle for each question.

1. A flowchart has a diamond that asks 'Is age >= 13?' with a Yes path and a No path, and no arrows going back. Which Python keyword does the diamond become?

A if

B while

2. A flowchart has a diamond 'Is count < 5?'. The Yes path goes to a rectangle, then an arrow loops back up to the diamond. Which keyword does it become?

A while

B if

3. A flowchart has a parallelogram that says 'Get name from user'. Which Python code matches it?

A name = 'Name? '

B name = input('Name? ')

4. A flowchart has a parallelogram that says 'Show score'. Which Python code matches it?

A print(score)

B score = input()

5. A flowchart has a rectangle that says 'total = total + 5'. What does it become in Python?

A if total + 5:

B total = total + 5

Match the Pairs

Draw a line connecting each item on the left to its match on the right.

Left column		Right column
1if age >= 13:		AA diamond asking 'Is lives more than 0?' where an arrow loops back to it from the Yes path
2while lives > 0:		Bscore = score + 1
3A parallelogram that says 'Input name' becomes an input() call		CA diamond asking a question like 'Is age 13 or more?' where the flow only goes forward
4A rectangle that says 'Add 1 to score' becomes a statement		Dname = input('Name? ')
5if count < 5: count = count + 1 (flowchart has a back arrow to the diamond)		EThe flowchart has an arrow looping back to the diamond, so it needs a while loop, not an if. An if only checks once.
6while x > 10: print('Big') (flowchart diamond has no back arrow)		FThe diamond has no arrow looping back, so it is a one-time decision. It should be an if, not a while.

Definitions

if / while

Fill in the Blanks

Complete each line of code by filling in the missing parts.

__ age >= 13: print("Teen")

_____ count < 5: count = count + 1

name = _____("Name? ") print(name)

score = 10 _____(score)

while lives > 0: print("Playing") lives = lives _ 1

Spot the Error

Shade in the letter of the line that contains an error.

Question 1

A age = int(input('Age: '))

B if age >= 13

C print('Teen')

Question 2

A count = 1

B while count <= 3:

C print(count)

D count + 1

Question 3

A score = int(input('Score: '))

B while score > 50:

C print('Pass')

Question 4

A num = input('Number: ')

B num = int(num)

C input(num * 2)

Question 5

A pin = print('PIN: ')

B if pin == '1234':

C print('Open')

D else:

E print('Locked')

Answer Key

Turning a flowchart into Python

Section A: Quick Questions

A — if

A — while

B — name = input('Name? ')

A — print(score)

B — total = total + 5

Section B: Match the Pairs

if age >= 13: → A diamond asking a question like 'Is age 13 or more?' where the flow only goes forward

while lives > 0: → A diamond asking 'Is lives more than 0?' where an arrow loops back to it from the Yes path

A parallelogram that says 'Input name' becomes an input() call → name = input('Name? ')

A rectangle that says 'Add 1 to score' becomes a statement → score = score + 1

if count < 5: count = count + 1 (flowchart has a back arrow to the diamond) → The flowchart has an arrow looping back to the diamond, so it needs a while loop, not an if. An if only checks once.

while x > 10: print('Big') (flowchart diamond has no back arrow) → The diamond has no arrow looping back, so it is a one-time decision. It should be an if, not a while.

Section C: Definitions

if / while — A flowchart diamond (a decision) becomes if, or while when an arrow loops back to it. Rectangles become statements and parallelograms become input() or print().

Section D: Fill in the Blanks

if age >= 13:
    print("Teen")

while count < 5:
    count = count + 1

name = input("Name? ")
print(name)

score = 10
print(score)

while lives > 0:
    print("Playing")
    lives = lives - 1

Section E: Spot the Error

B — The decision diamond becomes an if statement, and every if line must end with a colon. It should be: if age >= 13:

D — The rectangle that adds 1 must be a statement that stores the answer. 'count + 1' works it out but does not save it, so count never changes and the loop never ends. It should be: count = count + 1

B — This diamond has no arrow looping back to it, so it is a single decision. It should be: if score > 50:, not a while loop.

C — A parallelogram that shows a result becomes print(). input() is only for getting a value from the user. It should be: print(num * 2)

A — A parallelogram that asks the user for a value becomes input(). It should be: pin = input('PIN: ')