Question

check score >= 90? print(\grade a\)
check score >= 80?
action taken
score: 92
check score >= 90? print(\grade a\)
action taken: (note stops here!)
score: 58
check score >= 90?
check score >= 80?
check score >= 70?
check score >= 60?
action taken:
complete this table:
score final grade explanation
95
85
73
67
42
practice exercise 6: traffic light logic
write an elif chain for a traffic light system:
if light is
ed\ print \stop\
if light is \yellow\ print \slow down\
if light is \green\ print \go\
if light is anything else print \light malfunction\
python
light_color = partner provides:
ed\, \yellow\, \green\, or \blue\

Explanation:

Step1: Determine grades based on score ranges

For scores ≥ 90, grade is 'A'; for 80 ≤ score < 90, grade is 'B'; for 70 ≤ score < 80, grade is 'C'; for 60 ≤ score < 70, grade is 'D'; for score < 60, grade is 'F'.

Step2: Evaluate scores one - by - one

For score = 95, since 95 ≥ 90, grade is 'A'.
For score = 85, since 80 ≤ 85 < 90, grade is 'B'.
For score = 73, since 70 ≤ 73 < 80, grade is 'C'.
For score = 67, since 60 ≤ 67 < 70, grade is 'D'.
For score = 42, since 42 < 60, grade is 'F'.

Step3: Write Python code for traffic light logic

light_color = input("Enter the traffic light color (red, yellow, green, or blue): ")
if light_color == "red":
    print("Stop")
elif light_color == "yellow":
    print("Slow down")
elif light_color == "green":
    print("Go")
else:
    print("Light malfunction")

Answer:

Score	Final Grade	Explanation
85	B	80 ≤ Score < 90
73	C	70 ≤ Score < 80
67	D	60 ≤ Score < 70
42	F	Score < 60

light_color = input("Enter the traffic light color (red, yellow, green, or blue): ")
if light_color == "red":
    print("Stop")
elif light_color == "yellow":
    print("Slow down")
elif light_color == "green":
    print("Go")
else:
    print("Light malfunction")