👉Why Functions?

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#Functions

@python_pioneers

Function ለምን ይጠቅመናል?

1. Code Reusability:

Functions አንድን የፃፍነውን code በተደጋጋሚ እንድንጠቀመው ይረዳናል። አንዴ Function define ካረግን ፣ ብዙ ግዜ call እያረግነው በፈረግነው ቦታ መጠቀም እንችላለን። ስለዚህ የሆነን code በተደጋጋሚ መፃፍ አይጠበቅብንም።

   def greet():
       print("Hello, world!")
   
   greet()  # Reusing the same function
   greet()
   

2. Modularity:

ይህ የ Function ጥቅም ደግሞ አንድን complex problem ለብዙ የተለያዩ parts ከፍለን እያንዳንዱን part ደግሞ function ፅፈንለት በቀላሉ መፍትሄ እንድናገኝ ይረዳናል።

   def calculate_area(radius):
       return 3.14 * radius * radius
   

3. Readability:

ለላኛው የ Function ጥቅም ደግሞ የፃፍነው code በቀላሉ እንዲነበብ ያረገዎል፣ This helps other developers (and you, in the future) understand the code easily.

   def calculate_average(marks):
       return sum(marks) / len(marks)
   

4. Avoiding Redundancy:

አንድ የ code block ብዙ ጊዜ መጠቀም ከፈለግን፣ አንድ ጊዜ function define አርገን በቀላሉ ብዙ call ማድረግ እንችላለን፣ ይህ ደግሞ በተደጋጋሚ እየፃፍን ስህተት እንዳንሰራ ይረዳናል።

   def convert_to_fahrenheit(celsius):
       return (celsius * 9/5) + 32

•••

#Functions

@python_pioneers
@python_pioneers

Calling a Function

# Define a function that adds two numbers
def add_numbers(num1, num2):
    result = num1 + num2
    return result

# Calling the function
sum_result = add_numbers(5, 3)

print("The sum is:", sum_result)  # Outputs: The sum is: 8

Calling a function ማለት literally ከተረጎምን Function መጥራት ነው፣ ይህም ማለት አንድ define የተደረገ function executed እንዲሆን መጥራት እንደማለት ነው።
When you call a function, the program jumps to the function's code, runs it, and then continues from where the function was called.

ማብራሪያ

• add_numbers: ይሄ function ሁለት parameter ይወስዳል፣ ከዛ ይደምራቸውና ውጤቱን return ያረጋል።

Return የሚባለው statement ጥቅሙ ውጤቱን ወደ callerኡ ይመልስና functionኡን exit ማድረግ ነው።

Return statement executed ከሆነ functionኡን ያቆመውና functionኡ call በተደረገበት specified የሆነውን ውጤት ይሰጣል።

Return statement እንዴት ይሰራል?

- Syntax: return <expression>

- <expression> ማንኛውም አይነት value ሊሆን ይችላል variable, even a result of a calculation.
ማንኛውም ነገር ከ return statement ቀጥሎ ከሌለ functionኡ by default 'None' return ያረጋል።
ሌላኛው የ return statement ጥቅም አንድ function define አርገን ከሆነ ከfunctionኡ የሚገኘውን ውጤት ከfunctionኡ ውጪ በሆነ variable ውስጥ store አርገን እንድንጠቀመው ይረዳናል።

ምሳሌ

def square(number):
    return number ** 2

# Calling the function and storing the result
result = square(4)

print("The square is:", result)  # Outputs: The square is: 16

በዚህ ምሳሌ `return number ** 2' የ 'number'ን squared value 'square()' የተባለው function call ወደተደረገበት ይልካል፣ ከዛ return የተደረገው squared value ከfunctionኡ ውጪ result የተባለ variable ውስጥ store ይደረግና፣ then print ይደረጋል።

#Return
#CallingaFunction
#Function

@python_pioneers
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@python_pioneers

➡ Lambda Function

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It's called Integrity.

#Quote

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Hey everyone! Sorry it's been a while since our last meeting. Today, we're diving into an exciting lesson about lambda functions in Python.

Looking forward to seeing you all!

#LambdaFunctions

@python_pioneers

Lambda Functions in Python

Lambda functions በሌላ ስማቸው anonymous functions በ Python Programming language ውስጥ at a runtime አጭር እና unnamed functions እንድንፈጥር ያግዙናል። ሌላ ቦታ መጠቀም ያማንፈልገውን function በአንድ ቦታ ብቻ እንድንፈጥር ይረዱናል።

What is a Lambda Function?

Lambda function የፈለግነውን ያህል argument ይወስዳል ነገር ግን አንድ expression ብቻ ነው የሚቀበለው። Expression ኡ evaluated ከሆነ በዃላ value return ይደረጋል።

The syntax for a lambda function is:

lambda arguments: expression

የlambda functions ቁልፍ ባህሪያት

1. Anonymous: Lambda functions ስም የላቸውም፣ that means they're anonymous.

2. Single Expression: አንድ expression ብቻ ነው የሚይዙት፣ ይህ ደግሞ ከregular functions less powerful ያደርጋቸዋል።

3. Can Take Multiple Arguments: ብዙ argument የመቀበል አቅም አላቸው።

Lambda function ከregular function በsyntax እንዴት እንደሚለይ ከስር ባለው ምሳሌ መረዳት ይቻላል።

ምሳሌ : Basic Lambda Function

# Regular function
def add(x, y):
    return x + y

# Lambda function
add_lambda = lambda x, y: x + y

print(add(2, 3))         # Output: 5
print(add_lambda(2, 3))  # Output: 5

to be contd...

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#Python

@python_pioneers

Python Lambda Functions

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#LambdaFunctions

@python_pioneers

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