Python Learning – Day 4: Conditional Statements (if, else, elif)

Introduction

Welcome to Day 4 of my Python learning journey.
In this lesson, I learned how Python makes decisions using conditional statements such as if, else, and elif.

Conditional statements are extremely important in programming because real-life applications constantly make decisions based on conditions.

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📚 Topics Covered in Day 4

In this lesson, I learned:

• What are conditional statements
• How if works in Python
• How if-else controls program flow
• How elif handles multiple conditions
• Using conditions with user input

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🔀 What Are Conditional Statements?

Conditional statements allow a program to execute different code blocks based on conditions.

In simple words:

If a condition is true → do something
Else → do something else

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🧠 Simple if Example

age = 20

if age >= 18:
    print("You can vote")

This code checks whether a person is eligible to vote.

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🔄 if – else Example

age = 16

if age >= 18:
    print("You can vote")
else:
    print("You cannot vote")

Here, Python makes a decision based on the value of age.

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🧮 Real-Life Example: Pass or Fail

marks = 35

if marks >= 40:
    print("Pass")
else:
    print("Fail")

This logic is commonly used in school result systems.

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➕ Multiple Conditions Using elif

marks = 75

if marks >= 90:
    print("Excellent")
elif marks >= 60:
    print("Good")
elif marks >= 40:
    print("Pass")
else:
    print("Fail")

Python checks the conditions from top to bottom and executes the first true condition.

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🧾 Real-Life Program: Student Result System

name = input("Enter your name: ")
marks = int(input("Enter your marks: "))

if marks >= 90:
    print(f"{name}, your result is: Excellent")
elif marks >= 60:
    print(f"{name}, your result is: Good")
elif marks >= 40:
    print(f"{name}, your result is: Pass")
else:
    print(f"{name}, your result is: Fail")

This program behaves like a real-world student result evaluation system.

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🌍 Why Conditional Statements Are Important

Conditional statements are used in:

• Login systems
• Eligibility checks
• Exam result processing
• Banking and finance applications
• Decision-based automation

Without conditional logic, programs would not be able to make decisions.

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✅ What I Learned Today

• How to use if, else, and elif
• How Python makes decisions
• How to apply logic to real-life problems
• How to create interactive decision-based programs

This lesson helped me understand the foundation of decision-making in Python.

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🔜 Next Lesson (Day 5)

In Day 5, I will learn about:

• Loops in Python
• Repeating tasks automatically
• Real-life loop examples

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📢 Final Note

This Python learning series is written for beginners.
Anyone who wants to learn Python step by step can follow these posts.

Thank you for reading 🚀