VARIABLES IN PYTHON

በቀጣይ በPython ስለ variables ምንነት እንማራለን።

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VARIABLES IN PYTHON

In Python, Variables data values store ለማረግ ነው የሚያገለሉት። በMathematics ካየን a variable is a symbol that represents a number፡ አብዛኛውን ጊዜ ደግሞ ፊደል ነው። በተመሳሳይ፡ variable በpython ለሆነ data value መጠሪያ ነው፡ it can be a single letter or a word.

1. Variable Declaration: You declare variables in Python simply by assigning a value to them using the = sign. Variable declare ስናረግ በcomputerኡ memory ውስጥ የምንፈልገውን value store የምናረግበት space ይፈጠራል።

It is like የሆነ ሳጥን አላችሁ እንበል፣ ከዛ ስም ትሰጡታላችሁ፣ እናም የፈለጋችሁትን ነገር ሳጥኑ ውስጥ ማረግ ትችላላችሁ so think the same way about variables.

x = 5

2. Variable Naming Rules:
-የvariable ሥም ፊደል፣ ቁጥር እና underscore(_) መያዝ ይችላል።
- የvariable ሥም በቁጥር መጀመር አይቻልም።
- Variable names case-sensitive ናቸው። ማለትም ለምሳሌ age እና Age አንድ አይነት variable አይደሉም።

my_variable = "Hello"

3. Data Types: Python is dynamically typed, ማለትም የvariableኡን data type declare ማረግ አይጠበቅብንም። Python automatically የሚገባውን data በማየት የvariableኡን data type assign ያረጋል፣ ይሄ ግን ለሁሉም programming languages የሚሰራ አይደለም።

ለምሳሌ፡ difference in variable declaration between Java and Python እንይ፡

Declaring a variable in Java

int x = 5;

በዚህ ጊዜ variable declare ስናረግ data typeኡንም assign ማረግ ይኖርብናል። ግን we don't need to do this in python, since it automatically assigns the type of data at the instant we give it a value.

Declaring a variable in Python:

x = 5

Let's assign different data types to a variable in python

x = 5  # x is an integer
y = 3.14  # y is a float
z = "Hello"  # z is a string

4. Variable Reassignment: You can reassign a variable to a different value. ተምሳሳይ variable በመጠቅም value reassign ማረግ እንችላለን፣ that means we can give it another value.

x = 5
x = 10  # x is now assigned the value 10
# x is no more 5

...ይቀጥላል

Practice by assigning different values for variables.

❗Don't forget to invite your friends❗

@python_pioneers
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#Quote of the day

Multiple-choice questions pertaining to variable usage in Python.

❓Test your knowledge about variables with the following questions ❓

OPERATIONS IN PYTHON

Here are some of the fundamental operations in python. Mathematics ላይ ካየን there are operations like addition , subtraction... እነዚህን operations Arithmetic operations እንላቸዋለን፣ Python ግን Arithmetic operations ላይ የተገደበ አይደለም፣ There are lots of operations.

Operands: Operands are the values or variables on which an operator acts. In other words, operands are the data that are manipulated by an operator in an expression.

ለምሳሌ፡ In the expression 5 + 3, the _operands_ are the numbers 5 and 3, while the plus sign (+) is the _operator_ that acts on the _operands_ to perform the addition operation.

በ Python ደግሞ operands variables, constants, ወይም expressions ሊሆኑ ይችላሉ።

1. Arithmetic Operations:

- Addition (+): ሁለት ቁጥሮችን ለመደመር የምንጠቀመው type of operation ነው።.

- Subtraction (-): ከመጀመሪያው ቁጥር ሁለተኛውን ለመቀነስ የሚያገለግል operation ነው።

- Multiplication (*): ይህኛው ደግሞ ሁለት operands ለማባዛት፡

- Division (/): የመጀመሪያውን ቁጥር በሁለተኛው ቁጥር ለማካፈል ያገለግላል(The result is always a float).

- Modulus (%): Returns the remainder of the division(ቀሪ return ያረጋል)

- Exponentiation (**): Raises the first operand to the power of the second.
x**y ማለት x to the power of y እንደ ማለት ነው።

- Floor Division (//): Returns the quotient without the remainder(ክፍልፋይ ያለ ቀሪ return ያረጋል)

Code Example:

a = 10
b = 5
addition = a + b # result = 15

subtraction = a - b # result = 5

multiplication = a * b # result = 50

division = a / b # result = 2.0

modulus = a % b # result = 0 since the rem is 0

exponentiation = a ** b # result = 100000

floor_division = a // b # result = 2

2. Comparison Operations:

እነዚህ operations ደግሞ ሁለት values(operands) compare በማድረግ boolean value return ያረጋሉ (True or False) based on on the comparison result.

- Equal (==): Checks if two operands are equal.

- Not Equal (!=): Checks if two operands are not equal.

- Greater Than (>): Checks if the first operand is greater than the second.

- Less Than (<): Checks if the first operand is less than the second.

- Greater Than or Equal To (>=): Checks if the first operand is greater than or equal to the second.

- Less Than or Equal To (<=): Checks if the first operand is less than or equal to the second.

Code Example:

x = 10
y = 5
equal = x == y # result = False since 10 != 5

not_equal = x != y # result = True since 10 != 5

greater_than = x > y # result = True since 10 > 5

less_than = x < y # result = False since 10 > 5

greater_than_or_equal_to = x >= y # result = True

less_than_or_equal_to = x <= y # result = False

...ይቀጥላል

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...contd

3. Logical Operations:

The operands here are boolean values (True and False).

- AND (and): Returns True if both operands are true.

- OR (or): Returns True if any of the operands are true.

- NOT (not): Returns True if the operand is false.

Code Example:

p = True
q = False
and_result = p and q # result = False
or_result = p or q # result = True
not_result = not p # result = False

4. Assignment Operations:
እነዚህ ደግሞ አንድን value ለvariable assign ለማድረግ ነው የምንጠቀመው።

+= : በቀኝ በኩል ያለውን operand በግራ በኩል ባለው operand ላይ ይደምርና ውጤቱን በግራ በኩል ላለው operand assign ያረገዋል።

-= : በቀኝ በኩል ያለውን operand ከግራው በመቀነስ ውጤቱን በግራ በኩል ላለው operand assign ያረጋል።


*= : በግራ በኩል ያለውን operand በቀኝ በኩል ባለው ያባዛና ውጤቱን በግራ በኩል ላለው operand assign ያረጋል።

/= : በግራ በኩል ያለውን operand በቀኝ በኩል ባለው operand ያካፍልና ውጤቱን በግራ በኩል ላለው operand assign ያረገዋል።

Code Example:

x = 5
x += 3  # Equivalent to x = x + 3
x -= 2  # Equivalent to x = x - 2
x *= 4  # Equivalent to x = x * 4
x /= 2  # Equivalent to x = x / 2

These are just some of the basic operations in python, we believe you have grasped some knowledge about them.


@python_pioneers
@python_pioneers

GROW THROUGH WHAT YOU GO THROUGH.

የሚያጋጥመን ማንኛውም ፈተና እና መሰናክል ለመማር፣ ለማደግ እና ለመጠንከር እድል ይሰጠናል። በሚያጋጥሙን ችግሮች ከመማረር ወይም ከመናደድ ይልቅ ለself development እና እራሳችንን ለማሻሻል እንደ እድል አድርገን መቀበል አለብን።

መልካም ምሽት!

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COMMENTS IN PYTHON

Pythonን በአማርኛ እንማር!

Stay Tuned!
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COMMENTS IN PYTHON

በPython፡ Comments በPython interpreter ignore የሚደረጉ ማብራሪያዎች ናቸው። የፃፍነውን code purpose ለመግለፅ፣ እንዴት እንደሚሰራ፣ እና ሌሎች መረጃዎችን ለመፃፍ እንጠቀማቸዋለን። Comments are crucial for code readability and maintenance

TYPES OF COMMENTS IN PYTHON፡-

1. Single-Line Comments፡ እነዚህ comments በ# ምልክት ይጀምራሉ እና እስከ line መጨረሻ ድረስ ይቀጥላሉ ። እነዚህን ደግሞ ለአጫጭር ማብራሪያዎች እንጠቀማቸዋለን።

    # This is a single-line comment
    x = 5  # This is also a single-line comment

2. Multi-Line Comments፡ በPython ፣ ለMulti-line comments specific syntax የለም። ነገር ግን አብዛኛውን ጊዜ multi-line comments ለመፍጠር triple qoutes(ሶስት ትምህርተ ጥቅስ)(''' ወይም """) መጠቀም እንችላለን።

    '''
    This is a multi-line comment.
    It spans across multiple lines.
    '''

3. Docstrings፡ Docstrings፡ functions, modules, እና classes document ለማድረግ ይጠቅማሉ። They are enclosed in triple quotes and provide more detailed explanations of the purpose, parameters, and return values of functions.

ለምሳሌ ይሄንን code እንመልከት፡

    def add_numbers(a, b):
        """
        This function adds two numbers together.
        
        Parameters:
        a (int): The first number.
        b (int): The second number.
        
        Returns:
        int: The sum of a and b.
        """
        return a + b

እናም in general comments in any programming languages የሚያገለግሉት የፃፍነው code በምን ዓይነት መንገድ እንደሚሰራ ለመግለፅ ነው፣ የፃፍነውን code ደግሞ ለላ ሰው እንዲያየው share የምናረግ ከሆነ የሚያነበው ሰው የበለጠ ስለ programኡ አሰራር እንዲረዳ ያደርጋል።

@python_pioneers

There is no straight path to success. The problems we face have the ability to shape us. Grow through them.

HARD WORK
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PROBLEM
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SETBACK
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FAILURE
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CHALLENGE
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OBSTACLE
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SUCCESS

Have a nice day!

@python_pioneers

Let's Revise what we have been learning with these questions.
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