Conditional Statements

Introduction to conditional statements or alternative statements

Typically, when we run programs in python then python interpreter excludes its statement from belonging end to end / Line by line, but not many programs execute all statements in strict order as from beginning to end . A complex program can choose its execution sequence alternatively i.e., according to the need of the required output and to perform their manipulation magics, python program require some tools for performing repetitive actions and for making decisions and of course , python also provide such mechanism through STATEMENTS, such statement are called program control statements.

In this tutorial, we are going to learn about different kinds of control statements that python provides for statement and Iterative decision making through python programs.

Types of statements in python 

As we discussed above, python provides different types of statements that can be used to perform the following actions through program.

1. Data movements
2. Decision making
3. Repeating actions

“Hence statements are the smallest executable unit within a python program or statements are the instructions given to the computer to perform any kind of actions”

These python statement can belong one of the following three types.

1. Simple statements/single

2. Empty statements

3. Compound statements

Let’s discuss these one by one.

• Empty statements. – A statement which does nothing is always an empty statement. It means an empty statement is a simplest statement in python, it is simply identified by the following 

Pass

Whenever python executes a pass statement python does nothing and moves to the next statement in the flow of control . A pass statement is useful in those instances where the syntax of python requires a statement and the logic of the program does not require anything to do.

example program

• Simple statement – Any single statement that can be execute in python is called simple statement.

when a single statement  written in a single line executes and perform some action within the python program, it is called as simple statement,

For example

                         Name=int (input (“your name”))

                         Print(name)

image simple

• Compound statements – when we write more than one statement in multiple lines to be executed in python. This group of statement is called compound statement. This group of statements can perform repeating or iterative action according to logical requirements The compound statement in python are written in a specific pattern as shown below.

<compound statement header>:

<intended body containing multiple/single/compound statement>

That means; a compound statement has

1. A header title with begins with a keyword and ends with a colon (:)
2. A body containing or more python statements and each intended inside the header line, Also all statements in the body are at the same level of indentation.

Why conditional statement in Python?

In this tutorial, we have learnt about Conditional statements in python for CBSE class 11 & 12 and its related concepts according to CBSE syllabus and. This tutorial is useful for Central Board of secondary education (CBSE) student of class 11^{th and} 12^th  , who opted computer science (Code 083) as an optional subject. This topic is also very important to start learning python programing language for beginners of class 11th and 12th.

 

You can check the latest CBSE syllabus for computer science Click here for syllabus OR Click here

UNIT NO.	UNIT NAME	MARKS
1	Computational thinking and programming	40
2	Computer network	10
3	Database management	20
4	Practical	30
5	Total	100

 

Unit II: Computational Thinking and Programming – 1

According to the syllabus , Unit  II  Computational Thinking and Programming – 1 has  the above concepts for learning related to python Bitwise Operators in Python.

 

Exam Time

Chapter : Bitwise Operators in Python

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IMPORTANT QUESTIONS : Asked in examinations of Class 12th Computer Science