📊 For Loops Basics — Master the Most Common Loop

For loops are perfect when you know exactly how many times you need to repeat something.

🎯 For Loop Syntax

for variable in sequence:
    # code to repeat
    print(variable)

Three essential parts:

1. `for` — keyword

2. `variable` — takes each value from the sequence

3. `sequence` — the range or list to iterate over

💡 The range() Function

The `range()` function generates a sequence of numbers. It's the most common way to loop a specific number of times.

# range(stop) - counts from 0 to stop-1
for i in range(5):
    print(i)  # Prints: 0, 1, 2, 3, 4

# range(start, stop) - counts from start to stop-1
for i in range(2, 5):
    print(i)  # Prints: 2, 3, 4

# range(start, stop, step) - counts with a step
for i in range(0, 10, 2):
    print(i)  # Prints: 0, 2, 4, 6, 8

🎨 Practical Examples

Example 1: Simple counting

# Count from 1 to 5
for number in range(1, 6):
    print(f"Number: {number}")

Example 2: Multiplication table

# Print the 5 times table
for i in range(1, 11):
    result = 5 * i
    print(f"5 × {i} = {result}")

Example 3: Accumulating values

# Sum numbers from 1 to 100
total = 0
for number in range(1, 101):
    total = total + number
print(f"Sum: {total}")  # 5050

🔄 Iterating Through Lists

For loops work perfectly with lists:

fruits = ["apple", "banana", "orange"]
for fruit in fruits:
    print(f"I like {fruit}")

📊 For vs Range

🔑 Key Takeaways

🔗 What's Next?

Explore While Loops Basics for condition-based repetition!

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