Introduction to Python
Form 3 - Computer
2023-2024
Floor 4 - Computer Room
Mr. Peter
Outline
Outline
While Loop
1
Number Sequences
2
Exercises
3
While Loop Statement
1.
2.
Tab
while Condition :
Command1
While Loop Statement
1.
2.
while i < 5 :
3.
Tab
4.
Tab
i = 0
print(i)
i = i + 1
Write a Python code to create a loop printing number from 30 to 0, each loop decreases 5.
Question
While loop statement - Ex01
30
25
20
......
10
5
0
Example
Save the file as "XX_YYYY_Ex01.py"
Write a Python code to create a loop printing number from 100 to 0, then 0 to 100, each loop increase or decrease 1.
Question
While loop statement - Ex02
100
99
98
...
3
2
1
0
1
2
3
...
98
99
100
Example
Save the file as "XX_YYYY_Ex02.py"
Write a Python code to create a loop printing number from 100 to 0, then 0 to 100, each loop increase or decrease 1.
Question
While loop statement - Ex02
100
99
98
...
3
2
1
0
1
2
3
...
98
99
100
Example
Save the file as "XX_YYYY_Ex02.py"
Write a Python program that calculates and prints the values of 𝑦 for 𝑥 ranging from 1 to 20, where 𝑦 is defined by the equation . Your program should use a for loop to iterate through the values of 𝑥 and print the corresponding 𝑦 values.
Question
While loop statement - Ex03
x = 1, y = 2
x = 2, y = 4
x = 3, y = 8
x = 4, y = 16
...
x = 19, y = 524288
x = 20, y = 1048576
Example
Save the file as "XX_YYYY_Ex03.py"
y = 2^x
y = 2^x
print( 'x = ', x, ', y = ', y )String concatenation for printing
* Consider looping x from 1 to 20, then loop y from 1 to 1048576 within the same while loop.
Python - While Loop 03
By Mr Peter
