PCAP 31 03 PCAP Certified Associate Python Programmer · Free Practice Question Medium
Question 34
Q516 - Control Flow
What is the expected output of the following code?
marks = [80, 70, 90, 90, 80, 100]
average = sum(marks) // len(marks)
grade = ''
- if 90 <= average <= 100:
- grade = 'A'
- elif 80 <= average < 90:
- grade = 'B'
- elif 70 <= average < 80:
- grade = 'C'
- elif 65 <= average < 70:
- grade = 'D'
- else:
- grade = 'F'
- print(grade)
-
A
F -
B
B -
C
C -
D
The code is erroneous.
-
E
D -
F
A
Reveal correct answer
Correct answer: B
Explanation
Topics: if elif else list sum() len() chained comparison
Try it yourself:
- marks = [80, 70, 90, 90, 80, 100]
- average = sum(marks) // len(marks)
- grade = ''
- if 90 <= average <= 100:
- grade = 'A'
- elif 80 <= average < 90:
- grade = 'B'
- elif 70 <= average < 80:
- grade = 'C'
- elif 65 <= average < 70:
- grade = 'D'
- else:
- grade = 'F'
- print(grade) # B
- print(sum(marks)) # 510
- print(average) # 85
Explanation:
Here you really have to do a little mental arithmetic.
80 + 70 + 90 + 90 + 80 + 100 -> 510
510 // 6 -> 85
85 is a the grade B
Q516 (Please refer to this number, if you want to write me about this question.)
A. The code calculates the average of the marks and assigns a grade based on the average. As the average does not fall into any of the specified ranges, the default grade 'F' is not the expected output.
B. The code calculates the average of the marks and assigns a grade based on the average. In this case, the average is between 80 and 90, so the grade 'B' is expected as the output.
C. The code assigns grades based on the average calculated from the marks. As the average falls between 70 and 80, the grade 'C' is not the expected output.
D. The code is not erroneous as it correctly calculates the average of the marks and assigns a grade based on the average. The expected output is 'B' based on the average falling between 80 and 90.
E. The code assigns grades based on the average calculated from the marks. Since the average is not between 65 and 70, the grade 'D' is not the expected output.
F. The code is designed to assign grades based on the average calculated from the marks. Since the average falls between 90 and 100, the grade 'A' is not the expected output.
Discussion
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