Loops: Repeat Actions

6. While Loops

A while loop repeats instructions as long as a condition is true.

counter = 0

while counter < 5:

    print(counter)

    counter = counter + 1

Output:

0

1

2

3

4

Robotics example:

while True:

    print("Robot is running")

Important: while True creates an infinite loop. The program continues running until it is interrupted or reset.

7. For Loops

A for loop repeats instructions for each item in a sequence or collection.

It is useful when you know how many times you want to repeat an action.

for number in range(5):

    print(number)

Output:

0

1

2

3

4

You can also repeat an instruction a specific number of times:

for i in range(3):

    print("Hello Robot!")

8. for – Understanding range()

The range() function generates a sequence of numbers.

It is commonly used with for loops.

Three ways to use range():

for i in range(5): # From 0 to 4

    print(i)

for i in range(1, 6): # From 1 to 5

    print(i)

for i in range(0, 11, 2): # From 0 to 10, counting by 2

    print(i)

The general syntax is:

range(start, stop, step)