WHAT IS CONTROL STATEMENTS AND HOW TO USE IN PYTHON PROGRAMMING

CONTROL STATEMENTS

Python provides three selection statements that execute code based on a condition that evaluates to either True or False:

• The if statement performs an action if a condition is True or skips the action if the condition is False.
• The if... else statement performs an action if a condition is True or performs a dif erent action if the condition is False.
• The if... elif... else statement performs one of many different actions, depending on the truth or falsity of several conditions.

Anywhere a single action can be placed, a group of actions can be placed.
Python provides two iteration statements—while and for:

• The while statement repeats an action (or a group of actions) as long as a condition remains True.
• The for statement repeats an action (or a group of actions) for every item in a sequence of items.

Keywords

The words if, elif, else, while, for, True and False are Python keywords. Using a keyword as an identifier such as a variable name is a syntax error. The following table lists Python’s keywords.

Python keywords

and
as
assert

async

await
break

class

continue

def

del

elif

else

except

False

finally
for

from

global

if

import
in

is

lambda

None

nonlocal
not

or

pass

raise

return
True

try

while

with

yield