Python: IGCSE

exam 1

Your preparation for the examination should include attempting the following practical program coding tasks.
A teacher needs a program to record marks for a class of 30 students who have sat three computer science tests.
Write and test a program for the teacher.
Your program must include appropriate prompts for the entry of data. • Error messages and other output need to be set out clearly and understandably.
All variables, constants and other identifiers must have meaningful names. You will need to complete these three tasks. Each task must be fully tested.

คำสั่งที่เกี่ยวข้องสำหรับข้อนี้

sum(list) คือการบวกค่าทั้งหมดใน list
max(list) คือการหา ค่าสูงสุด ที่อยู่ใน list
การสร้างฟังก์ชั่นแบบมี parameter
function ที่มีการ return
while loop เพื่อ validate ค่าที่ input
การใช้ try accept else เพื่อป้องกัน error

TASK 1 – Set up arrays Set-up one dimensional arrays to store:
- • Student names
- • Student marks for Test 1, Test 2 and Test 3
  - o Test 1 is out of 20 marks
  - o Test 2 is out of 25 marks
  - o Test 3 is out of 35 marks
- • Total score for each student Input and store the names for 30 students. You may assume that the students’ names are unique. Input and store the students’ marks for Test 1, Test 2 and Test 3. All the marks must be validated on entry and any invalid marks rejected.
TASK 2
- – Calculate : Calculate the total score for each student and store in the array.
- Calculate the average total score for the whole class. Output each student’s name followed by their total score.
- Output the average total score for the class.
TASK 3
- – Select : Select the student with the highest total score and output their name and total score.

414824-2020-specimen-paper-2-pre-release-material.pdf

414833-2020-specimen-paper-2-mark-scheme.pdf

Task 1 Code

#Task1 - Set up arrays

studentNames = []

studentMarks_Test1 = []

studentMarks_Test2 = []

studentMarks_Test3 = []

eachStdTotalScore = []

student_number = 2

#input and store all names

for i in range(student_number):

print("Please key student name #", i+1)

temp_name = input("Student names-->")

studentNames.append(temp_name)

print("all students are :", studentNames)

# #input and store test1 scores

# for i in range(student_number):

# print("please key test1 score for student#",i+1)

# temp_score = int(input("score-->"))

# while True:

# try:

# if temp_score <= 20 and temp_score >= 0:

# studentMarks_Test1.append(temp_score)

# break

# raise Exception("invalid score ")

# except Exception as e:

# print('Because', e)

# temp_score = int(input("score-->"))

# print("Test 1 score= ",studentMarks_Test1)

# #input and store test2 scores

# for i in range(student_number):

# print("please key test2 score for student#",i+1)

# temp_score = int(input("score-->"))

# while True:

# try:

# if temp_score <= 25 and temp_score >= 0:

# studentMarks_Test2.append(temp_score)

# break

# raise Exception("invalid score ")

# except Exception as e:

# print('Because', e)

# temp_score = int(input("score-->"))

# print("Test 2 score= ",studentMarks_Test2)

#create function for input and store test scores

def input_score(stdNum,testNum,maxScore):

studentMarks_Temp = []

for i in range(stdNum):

print("please key test",testNum ,"score for student#",i+1)

temp_score = int(input("score-->"))

while True:

try:

if temp_score <= maxScore and temp_score >= 0:

studentMarks_Temp.append(temp_score)

break

raise Exception("invalid score ")

except Exception as e:

print('Because', e)

temp_score = int(input("score-->"))

#print("Test score= ",studentMarks_Temp)

return studentMarks_Temp

#call all functions

studentMarks_Test1 = input_score(student_number,1,20)

print("Test 1 score= ",studentMarks_Test1)

studentMarks_Test2 = input_score(student_number,2,25)

print("Test 2 score= ",studentMarks_Test2)

studentMarks_Test3 = input_score(student_number,3,35)

print("Test 1 score= ",studentMarks_Test1)

print("Test 2 score= ",studentMarks_Test2)

print("Test 3 score= ",studentMarks_Test3)

Task 2 Code

#Task 2

#Calculate total score for each student and store in the array

print("******************\nTask 2")

for i in range(student_number):

temp_StdTotalScr = stdMarks_Test1[i]+stdMarks_Test2[i]+stdMarks_Test3[i]

eachStdTotalScore.append(temp_StdTotalScr)

print(eachStdTotalScore)

#calculate average totoal score for the whole class

classTotalScr = sum(eachStdTotalScore)

avgclassTotalScr = classTotalScr/len(eachStdTotalScore)

print("Total Score for the class is:", classTotalScr)

#output each std's name followed by their total score

for i in range(student_number):

print(studentNames[i],':',eachStdTotalScore[i])

#Output the average total score for the class

print("Average Total Score for the class is:", round(avgclassTotalScr,2))

Task 3 Code

#Task 3 : Select the student with the highest total score and output their name and total score

#first find the highest score and it's index.

print("******************\nTask 3")

highestScr = max(eachStdTotalScore)

#print('highest score is :',highestScr)

highestScr_index = eachStdTotalScore.index(highestScr)

#print('the student with highest total score is at :',highestScr_index)

print(studentNames[highestScr_index], 'got the highest score of:',highestScr)

print("*********** The End ***********")

exam 2

The 1D array StudentName[ ] contains the names of students in a class.
The 2D array StudentMark[ ] contains the mark for each subject, for each student.
The position of each student’s data in the two arrays is the same, for example, the student in position 10 in StudentName[ ] and StudentMark[ ] is the same.
The variable ClassSize contains the number of students in the class.
The variable SubjectNo contains the number of subjects studied.

All students study the same number of subjects.
The arrays and variables have already been set up and the data stored.
Students are awarded a grade based on their average mark

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Python: IGCSE

exam 1

Your preparation for the examination should include attempting the following practical program coding tasks.

A teacher needs a program to record marks for a class of 30 students who have sat three computer science tests.

Write and test a program for the teacher.

Your program must include appropriate prompts for the entry of data. • Error messages and other output need to be set out clearly and understandably.

All variables, constants and other identifiers must have meaningful names. You will need to complete these three tasks. Each task must be fully tested.

คำสั่งที่เกี่ยวข้องสำหรับข้อนี้

sum(list) คือการบวกค่าทั้งหมดใน list

max(list) คือการหา ค่าสูงสุด ที่อยู่ใน list

การสร้างฟังก์ชั่นแบบมี parameter

function ที่มีการ return

while loop เพื่อ validate ค่าที่ input

การใช้ try accept else เพื่อป้องกัน error

TASK 1 – Set up arrays Set-up one dimensional arrays to store:

• Student names

• Student marks for Test 1, Test 2 and Test 3

o Test 1 is out of 20 marks

o Test 2 is out of 25 marks

o Test 3 is out of 35 marks

• Total score for each student Input and store the names for 30 students. You may assume that the students’ names are unique. Input and store the students’ marks for Test 1, Test 2 and Test 3. All the marks must be validated on entry and any invalid marks rejected.

TASK 2

– Calculate : Calculate the total score for each student and store in the array.

Calculate the average total score for the whole class. Output each student’s name followed by their total score.

Output the average total score for the class.

TASK 3

– Select : Select the student with the highest total score and output their name and total score.

Task 1 Code

Task 2 Code

Task 3 Code

exam 2