While loop in python

Skill - ‘while’ statement for looping in python

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Skills Required

• Setup python development environment
• Basic Printing in Python
• Commenting in Python
• Managing Variables in python

Please make sure to have all the skills mentioned above to understand and execute the code mentioned below. Go through the above skills if necessary for reference or revision

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while statement is used to run code again and again until a specified condition is satisfied.

Using ‘while’ statement to print 10 times

x = 1
while x<=10:
	print('{0} - Hello World!'.format(x))
	x = x + 1
# this prints
'''
1 - Hello World!
2 - Hello World!
3 - Hello World!
4 - Hello World!
5 - Hello World!
6 - Hello World!
7 - Hello World!
8 - Hello World!
9 - Hello World!
10 - Hello World!
'''

Using ‘break’ to abort while loop

In the example below, we can see that the loop is broken using the break keyword at 4th iteration

x = 1
while x<=10:
	print('{0} - Hello World!'.format(x))
	if x==4:
		break
	x = x + 1
# this prints
'''
1 - Hello World!
2 - Hello World!
3 - Hello World!
4 - Hello World!
'''

Using ‘continue’ to skip iteration

In the example below, we can see that the loop is skipped using the continue keyword at 4th iteration

x = 0
while x<10:
	x = x + 1
	if x==4:
		continue
	else:
		print('{0} - Hello World!'.format(x))
# this prints
'''
1 - Hello World!
2 - Hello World!
3 - Hello World!
5 - Hello World!
6 - Hello World!
7 - Hello World!
8 - Hello World!
9 - Hello World!
10 - Hello World!
'''

Video

The video for this post can be found here

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Online Interpreter

You can run these codes online at https://www.programiz.com/python-programming/online-compiler/

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