...cont'd

ምሳሌ:
በዚህ ምሳሌ የምናየው program ከ 1 እስከ 5 ያሉ ቁጥሮችን print የሚያረግ ነው:

i = 1
while i <= 5:
    print(i)
    i += 1  # Increment the value of i by 1

Detailed Explanation

1. Initialization: i is initialized to 1 ማለትም i የሚባል variable initial valueውን አንድ አርገናል።

2. Condition Check: i <= 5 check ይደረጋል: conditionኡ እውነት ከሆነ loopኡ ይቀጥላል otherwise loopኡ terminate ያረጋል።

3. Body of Loop: print(i) የ variable 'i' ን current value print ያረጋል።

4. Increment: i is incremented by 1 using i += 1.
Increment ማለት የአንድን variable value በሆነ ያህል አማውንት መጨመር ማለት ነው፣ በላይኛው case each time the variable 'i' is being incremented by 1.

5. Re-evaluation: The condition i <= 5 is checked again with the new value of i.

If you have understood about while loop from the above two posts, answer these questions given below.

#WhileLoop

@python_pioneers
@python_pioneers

Comment your answers from now on...

6. What is the output of the following code?

i = 0
while i < 3:
    print(i)
    i += 1

A) 0 1 2

B) 0 1 2 3

C) 1 2 3

D) 0 1

7. How many times will "Hello, World!" be printed?

count = 5
while count > 0:
    print("Hello, World!")
    count -= 1

A) 6

B) 5

C) 4

D) Infinite

8. What will be the value of sum after the execution of the following code?

sum = 0
i = 1
while i <= 5:
    sum += i
    i += 1

A) 10

B) 15

C) 20

D) 5

9. What is the purpose of the following while loop?

n = 10
while n > 0:
    n -= 1

A) To count up from 1 to 10

B) To count down from 10 to 1

C) To count down from 10 to 0

D) To count up from 0 to 10

10. What will be the output of the following code?

x = 0
while x < 4:
    x += 1
    print(x)

A) 0 1 2 3

B) 1 2 3 4

C) 0 1 2 3 4

D) 1 2 3

ሁላችሁንም ስለተሳትፏችሁ በጣም እናመሰግናለን!

በቴክኖሎጂው ዘርፍ ብቁ የሆነ ትውልድ ማፍራት ነጌ ላይ አድጋ ልናያት የምንፈልጋትን ኢትዮጵያ ለመገንባት ዋነኛ አማራጭ ነው።

መልካም ምሽት!

@python_pioneers
@python_pioneers

https://news.1rj.ru/str/tapswap_mirror_1_bot?start=r_6163528558 🎁 +2.5k Shares as a first-time gift

Infinite Loop

While loopን ስንጠቀም common የሆነ ችግር ቢኖር የinfinite loop መፈጠር ነው። ይህም infinite loop conditionኡ False መቼም በማይሆንበት ጊዜ ይፈጠራል።


Example of an infinite loop:

while True:
    print("This will print forever")

ከላይ ያለው ፕሮግራም "This will print forever" የሚለውን ዐ/ነገር ያለ ገደብ print ያረጋል።


Breaking Out of a Loop

Infinite Loop avoid ለማረግ "break" statement መጠቀም እንችላለን፣ ይህም የሆነ condition set አርገን እውነት በሚሆንበት ጊዜ loopኡን exit እንድናረግ ይረዳናል።

i = 1
while i <= 10:
    print(i)
    if i == 5:
        break  # Exit the loop when i is 5
    i += 1

ከላይ ያለው ፕሮግራም መጀመሪያ የተፃፈው ከ 1 እስከ 10 ያሉ ቁጥሮችን print እንዲያረግ ቢሆንም የ'i' value 5 ሲሆን እንዲያቆም ቅድመ-ሁኔታ ስላስቀመጥን ልክ የ'i' value 5 ሲሆን loopኡ ይቆማል።


Using Else with While Loop

Python 'else' clause ከ while loop ጋር እንድንጠቀም ይፈቅዳል። የ'else' block executed የሚሆነው የ while loop condition ሀሰት ሲሆን ነው። (i.e., the loop terminates naturally).

ምሳሌ

i = 1
while i <= 5:
    print(i)
    i += 1
else:
    print("Loop has ended")

...ይቀጥላል

#WhileLoop

@python_pioneers
@python_pioneers

😂😂😂😂😂😂😂😂😂

-> @lewtayew

#Fun

@python_pioneers

Common Use Cases

1. Waiting for User Input: የፈለግነውን data እስከምናገኝ User input በተደጋጋሚ እንድንቀበል ይረዳናል።


2. Processing Data Streams: መጨረሻ ላይ እስከምንደርስ data ከfile ወይም ከ network stream continuously እንድናነብ ይረዳናል።

3. Polling: የአንድን resource status periodically check እንድናረግ ይረዳናል።

ምሳሌ: User Input

Here's an example where we keep asking the user for a positive number:

number = -1
while number < 0:
    number = int(input("Enter a positive number: "))
print("You entered: ", number)

ከላይ ያለው ፕሮግራም userኡ positive ቁጥር እንዲያስገባ repeatedly ይጠይቀዋል፣ ቁጥሩን ደግሞ print ያረጋል፣ if the user enters a positive number the loop ends, because the condition becomes false.

...to be continued

#WhileLoop

@python_pioneers
@python_pioneers

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Have a nice day!

#Quotes

@python_pioneers
@python_pioneers

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@python_pioneers

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