Control Flow in Python

Python Programming

Control Flow in Python

Beginner Lesson 4 of 10

Control Flow in Python

Control flow statements allow you to control the execution order of your code.

Conditional Statements

if, elif, else

age = 18

if age < 13:
    print("Child")
elif age < 20:
    print("Teenager")
else:
    print("Adult")

Conditional Expressions (Ternary)

status = "adult" if age >= 18 else "minor"

Loops

for Loop

# Iterating over a list
fruits = ["apple", "banana", "cherry"]
for fruit in fruits:
    print(fruit)

# Using range
for i in range(5):
    print(i)  # 0, 1, 2, 3, 4

# Enumerate for index and value
for index, fruit in enumerate(fruits):
    print(f"{index}: {fruit}")

while Loop

count = 0
while count < 5:
    print(count)
    count += 1

Loop Control

# break - exit loop
for i in range(10):
    if i == 5:
        break
    print(i)

# continue - skip iteration
for i in range(5):
    if i == 2:
        continue
    print(i)

# else clause (runs if loop completes normally)
for i in range(5):
    print(i)
else:
    print("Loop completed!")

Next Steps

Continue to Functions →