Introduction to Python

Form 4 - Computer

2023-2024

Floor 4 - Computer Room

Mr. Peter

Computer Exam on June 18

F4 Exam Coverage:
- List data structure
- While loop statements
- if statements, if...else statements, and if...elif...else statements
- Operators: and & or, arithmetic and relational operators
- Functions: input（）, print（）, int（）, str（）, float（）, len（）

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While Loop Statement

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Exam Revision01

Parallax Number Increment

Write a Python program that uses a while loop to generate and print two sequences of numbers:

Expected outcome after your program executed

1 2

3 4

......

17 18

19 20

Save the file as "XX_YYYY_revision01.py"

1. Odd numbers starting from 1 and increasing by 2, up to and including 19.

2. Even numbers starting from 2 and increasing by 2, up to and including 20.

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Exam Revision02

GDP Growth in China

Assuming China has a GDP of 5,000 billion dollars, and it grows at a constant rate of 6% per year. In the first year, the GDP grows to 5,300 billion dollars. In the second year, the GDP grows by 6% again, resulting in 5,618 billion dollars. The question is, how much will China's GDP have accumulated to after growing continuously for 30 years?

Expected outcome after your program executed

The accumulated GDP after 30 years is: 28717.46 billion dollars

Save the file as "XX_YYYY_revision02.py"

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Exam Revision03

Extracting Characters at Odd Indices from a String

Write a Python program that creates a variable storing the string "ILoveComputer", uses a while loop to iterate over the string accessing only the characters at odd indices (1, 3, 5, etc.), merges these characters into a new string, and outputs the new string consisting of the characters from the original string at odd indices.

Expected outcome after your program executed

The new string with characters at odd indices is: LvCmue

Save the file as "XX_YYYY_revision03.py"