Python Programming! Input And Output | Lectures 3

Lets Start Python Programming For Beginners. Input And Output, Lectures 3

🐍 Lecture 3: Input & Output

🎯 Goal

By the end of this lecture, you will:

• Know how to get input from the user.
• Be able to print messages and variables clearly.
• Understand how to combine text and variables in print() statements.
• Build a simple interactive program.

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💬 What is Input & Output?

In programming:

• Input means getting information from the user.
• Output means showing information to the user.

We’ve already used output with the print() function. Now we’ll learn how to take input using input().

📥 Getting Input with input()

The input() function asks the user for some information and stores it in a variable.

name = input("What is your name? ")
print("Hello,", name)

👉 When you run this, the computer will ask:

What is your name? 

You type your name and press Enter. Then it says:

Hello, Alice

🧒 Kids Corner: Think of input() like asking a question to your robot friend and letting them write down the answer!

🖨️ Printing Variables and Text Together

There are a few easy ways to print text and variables together.

Method 1: Using commas (Simple)

name = "Emma"
print("Your name is", name)

👉 Output:

Your name is Emma

Python adds a space between the words automatically.

Method 2: Using f-strings (Best Way!)

An f-string lets you put variables directly into your message.

age = 10
print(f"I am {age} years old.")

👉 Output:

I am 10 years old.

Just add an f before the quotes and put the variable inside { }.

This is the most popular way to mix text and variables in Python!

🧪 Try It Yourself!

Write a small program that:

1. Asks for the user’s favorite color.
2. Stores it in a variable.
3. Prints a message like:

Wow! Blue is an awesome color!

💡 Sample Code:

color = input("What is your favorite color? ")
print(f"Wow! {color} is an awesome color!")

➕ Combining Multiple Inputs

Let’s make a mini story using two inputs:

animal = input("Enter an animal: ")
color = input("Enter a color: ")

print(f"The {animal} saw a {color} balloon and got very excited!")

👉 Example Run:

Enter an animal: cat
Enter a color: red
The cat saw a red balloon and got very excited!

🧠 Type Conversion – Turning Input into Numbers

⚠️ Note: All input from input() is treated as text (str).
If you want to do math with it, you need to convert it to a number.

Example: Simple Calculator

num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))

total = num1 + num2

print(f"The total is {total}")

👉 Run it:

Enter first number: 5
Enter second number: 7
The total is 12

Other conversions:

• float() – for decimal numbers
• str() – for turning numbers into text

🧒 Kids Corner

🤖 Imagine your robot can talk AND listen!
Now it doesn’t just say things — it also hears what you say and remembers it.

💬 Robot says:

Tell me your favorite food...
Okay, I remember it now!

🚀 Challenge (Optional)

Make a short quiz game that:

1. Asks for the user’s name.
2. Asks a fun question like “What is 5 + 3?”
3. Checks if the answer is correct and gives feedback.

Example:

name = input("Welcome! What is your name? ")
answer = int(input("What is 5 + 3? "))

if answer == 8:
    print("Great job, " + name + "! You're a math wizard!")
else:
    print("Oops! The correct answer was 8.")

📌 Summary

• Use input() to get information from the user.
• Use print() to show messages or variables.
• Use f-strings to easily mix text and variables.
• Convert input to numbers using int() or float() when needed.

🔹 Call Of Action

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Python Programming For Beginners To Advanced

Python Programming For Beginners! Lecture 1

Python Programming! Variables and Data Types | Lectures 2

Python Programming! Input And Output | Lectures 3

Python Programming! Operators in Python Lectures 4

Python Programming! Conditional Statements Lectures 5