CodeCrate

Variables – What Are They?

A variable is like a box that stores something. You give it a name and put a value in it.

Example Code:

x = 10
print(x)

If/Else – Making Decisions

If/Else helps your program choose what to do based on conditions.

Example Code:

age = 12
if age > 10:
    print("You're older than 10!")
else:
    print("You're 10 or younger.")

Loops – Repeat with Power!

Loops let your program repeat actions to save time.

Example Code:

for i in range(3):
    print("Hi!")

Arrays – Storing Many Things

An array (or list in Python) stores multiple values in one place — like a basket of fruits.

Example Code:

fruits = ["apple", "banana", "cherry"]
print(fruits[1]) # Accessing the second item (index 1)

Functions – Reusable Code Blocks

A function is like a mini-program you can call anytime to perform a specific task.

Example Code:

def greet():
    print("Hello!")

greet() # Calling the function

Code Challenges

Try these challenges on your own! You can use an online Python editor like Replit.

• Challenge 1: Write Python code to print the numbers from 1 to 5.
• Challenge 2: Create a Python function called `square` that takes a number as input and returns its square (the number multiplied by itself).
• Challenge 3: Write Python code that asks the user for a number and then prints whether the number is even or odd. (Hint: Use the modulo operator `%`).

Fun Coding Stories

Coding Glossary

• Variable: Stores a value (like a number or text) with a name.
• Loop: Repeats a block of code multiple times.
• Function: A named block of reusable code that performs a task.
• Array (List): Holds multiple values in an ordered sequence.
• If/Else: Makes decisions in code based on whether a condition is true or false.
• Print: Shows output (text, numbers, etc.) on the screen.

Debug Like a Pro

Everyone makes mistakes (bugs!) in code. Here's how to find and fix them:

• Always use a colon : at the end of lines starting with if, else, for, def.
• Use double equals == to compare if two things are equal (e.g., if age == 10:). A single equals = is for assigning values to variables.
• Watch your indentation! Python uses spaces/tabs to group code. Mismatched indentation causes errors.
• Use print() statements inside your code to see the values of variables at different points. This helps track down where things go wrong.

Your Achievements Wall

Celebrate your coding milestones!

My Notes

Progress Tracker

Check off the concepts you've learned:

• Variables
• If/Else
• Loops
• Arrays
• Functions

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