Learn With Frahim

Day 3:Python Control Flow – Conditionals & Loops

Conditionals allow your program to make decisions based on data.

age = int(input("Enter your age: "))

if age >= 18:

  print("You are an adult.")

else:

  print("You are a minor.")

Enter your age: 20

You are an adult.

For loops are used to iterate over sequences like lists or ranges.

fruits = ["apple", "banana", "cherry"]

for fruit in fruits:

  print(fruit)

apple

banana

cherry

While loops repeat as long as a condition is True.

count = 1

while count <= 5:

  print("Count =", count)

  count += 1

Count = 1

Count = 2

Count = 3

Count = 4

Count = 5

Use break to exit a loop early and continue to skip the current iteration.

for i in range(1, 6):

  if i == 3:

    continue  # skip 3

  print(i)

Project layout and code demonstration:

        MyPythonProject

        ├── loops.py

        ├── data.txt

        └── requirements.txt

# loops.py
numbers = [1, 2, 3, 4, 5]
for n in numbers:
    if n == 3:
        continue
    print(n)

✔ End of Day 3 – Conditionals and loops understood and tested. You can now control the flow of your programs!