Page 85 - TP-Play_V-2.0_Book-7
P. 85
CONDITIONAL STATEMENTS
08 IN PYTHON
Your Aim
to learn about:
Decision Making Statements The if Statement
The if…else Statement Nested if Statement
The if…elif…else Ladder
There are situations in life when we need to decide based on a situation. For example, if it rains,
I will stay at home or else I shall visit the market. Similar situations arise in programming as
well, where we need to make some decisions and based on these decisions, execute a set of
commands. We need to determine which action is to be taken and which statement is to be
executed, if the outcome is true or false. In this chapter, we will learn about decision making
statements of Python.
DECISION MAKING STATEMENTS
Decision making in Python is done by called conditional statements which decide the flow of
program execution. The following conditional statements are available in Python:
if statement if...else statement
Nested if statement if…elif…else ladder
THE IF STATEMENT
The if statement is the simplest conditional statement. Here,
False
Test Expression
a statement or a collection of statements within the if block
is executed only if a certain condition or expression evaluates
to True. If the condition evaluates to False, then the control True
of execution is passed to the next statement after the if block.
The syntax of the if statement is given below: Body of if
Syntax:
if (Test Expression):
Statement just below if
Indented statement block
# if block ends here
Conditional Statements in Python 85

