08. Quiz: Boolean Expressions for Conditions
Quiz: Evaluate composed boolean expressions
QUIZ QUESTION::
Imagine an air traffic control program that tracks three variables, altitude
, speed
, and propulsion
which for a particular airplane have the values specified below.
altitude = 10000
speed = 250
propulsion = "Propeller"
For each of the following boolean expressions, work out whether it evaluates to True or False and match the correct value.
ANSWER CHOICES:
Expression |
|
---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
SOLUTION:
Expression |
|
---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Quiz: Using Truth Values of Objects
The code below is the solution to the Which Prize quiz you've seen previously. You're going to rewrite this based on what you've learned about truth values.
points = 174
if points <= 50:
result = "Congratulations! You won a wooden rabbit!"
elif points <= 150:
result = "Oh dear, no prize this time."
elif points <= 180:
result = "Congratulations! You won a wafer-thin mint!"
else:
result = "Congratulations! You won a penguin!"
print(result)
You will use a new variable prize
to store a prize name if one was won, and then use the truth value of this variable to compose the result
message. This will involve two if
statements.
1st conditional statement: update prize
to the correct prize name based on points
.
2nd conditional statement: set result to the correct phrase based on whether prize is evaluated as True or False.
- If
prize
is None,result
should be set to"Oh dear, no prize this time."
- If
prize
contains a prize name,result
should be set to"Congratulations! You won a {}!".format(prize)
. This will avoid having the multiple result assignments for different prizes.
At the beginning of your code, set prize to None, as the default value.
Start Quiz:
points = 174 # use this as input for your submission
# establish the default prize value to None
# use the points value to assign prizes to the correct prize names
# use the truth value of prize to assign result to the correct prize
print(result)