🐍 Python Day 5: Loops in Python
🎯 Loops are used to repeat a block of code multiple times.
🔁 1. for Loop
✅ Used to iterate over a sequence (like list, string, range).
🧠 Syntax:
for variable in sequence:
# code block
🧪 Example:
for i in range(5):
print("Hello", i)
🖨️ Output:
Hello 0
Hello 1
Hello 2
Hello 3
Hello 4
🔁 2. while Loop
✅ Repeats as long as the condition is true.
🧠 Syntax:
while condition:
# code block
🧪 Example:
count = 1
while count <= 5:
print("Count is:", count)
count += 1
🖨️ Output:
Count is: 1
Count is: 2
Count is: 3
Count is: 4
Count is: 5
🔄 range() Function:
range(start, stop, step)
✅ Example:
for i in range(1, 10, 2):
print(i)
🖨️ Output: 1 3 5 7 9
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⚠️ Important Notes:
range(n) gives numbers from 0 to n-1.
break exits the loop early.
continue skips the current iterations .
💪 Practice Exercises:
1. Print numbers from 1 to 10 using for loop.
2. Print even numbers from 1 to 20 using while loop.
3. Sum of first 10 natural numbers using a loop.
4. Use break to stop a loop when a condition is met.
5. Use continue to skip printing number 6 in a loop from 1 to 10.
