Loop Control Statements

 Control statements alter the sequential execution of a program.

Examples

• if-elif-else
• while, for
• break, continue

Break

Break statement makes the program exit a loop early.

Using Break

Generally, break is used to exit a loop when a condition is satisfied.

In the below example, when the variable

i

value equals to

3

the

break

statement gets executed and stops the execution of the loop further.

Code

1

2

3

4

5

for i in range(5):

if i == 3:

break

print(i)

print("END")

PYTHON

Output

0

1

2

END

Break in Nested Loop

Break in inner loop stops the execution of the inner loop.

Continue

Continue makes the program skip the remaining statements in the current iteration and begin the next iteration.

Using Continue

Generally, continue is used to skip the remaining statements in the current iteration when a condition is satisfied.

In the below example, when the variable

i

value equals to

3

the next statements in the loop body are skipped.

Code

1

2

3

4

5

for i in range(5):

if i == 3:

continue

print(i)

print("END")

PYTHON

Output

0

1

2

4

END

Pass

Pass statement is used as a syntactic placeholder. When it is executed, nothing happens.

Generally used when we have to test the code before writing the complete code.

Empty Loops

We can use pass statements to test code written so far, before writing loop logic.