Python Loops

Python loops are used to iterate the sequential data. Python loops are,

Ø For loop

Ø While loop

Ø Nested loop

For Loop:

For loop is used to execute sequential data. It loops based on length of the sequential data.

Python for loop, break, continue,regularpython, regular python

Example1: This example shows how to iterate string value.

name = 'python'

for k in name:

print(k)

output:

Example2: How to print List data.

fruits = ['Apple', 'Mangos', 'Banana', 'Oranges', 'Grapes']

for fruit in fruits:

print(fruit)

output:

Apple

Mangos

Banana

Oranges

Grapes

Example3: How to print tuple data.

fruits = ('Apple', 'Mangos', 'Banana', 'Oranges', 'Grapes')

for fruit in fruits:

print(fruit)

output:

Apple

Mangos

Banana

Oranges

Grapes

Example4: How to print dictionary data.

student = {"name": 'sai', 'nuber':1, 'marks':90, 'subjects': ['science', 'maths', 'physics']}

for item in student.items():

print(item)

output:

('name', 'sai')

('nuber', 1)

('marks', 90)

('subjects', ['science', 'maths', 'physics'])

While Loop:

While loop is mainly used to continuous iteration. This is a very danger loop, you should handle this otherwise program will not stop. It iterates continuously.

python while loop, break, continue, regular python, regularpython

Eample1: Without handling the loop

while True:

print('hello')

output:

hello

hello …

Example2: with handling the loop.

count = 1

while True:

print('hello')

if count == 5:

break

count+=1

output:

hello

Nested Loops:

groups = [['apple', 'banana'], ['tomato', 'onion'], ['bat', 'ball']]

for group in groups:

for item in group:

print(item)

output:

apple

banana

tomato

onion

bat

ball

Python Loops

Python For loop, while loop, Break, Continue

Python Loops