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10                  Conditional Statements 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 where  we  must make decisions based  on  the  circumstances.  For

                  example, if it rains, we will stay at home, or else we will 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. Whether the outcome is true or false, we must decide which action
                  to take and which statement to execute. In this chapter, we will learn about conditional statements
                  in Python.

                      DECISION MAKING STATEMENTS                                              Start

                  Conditional statements, also known  as decision-making or
                  control flow statements, are used in programming to execute
                                                                                                              False
                  different  blocks of  code  based  on  certain  conditions.  The          if condition
                  following Decision Making Statements are available in Python:
                                                                                                  True
                      if statement                          if...else statement
                                                                                       Statements in if block
                      Nested if statement                   if…elif…else ladder
                                                                                             execute
                      THE IF STATEMENT

                  The if statement is the simplest conditional statement. In case             Stop
                  of the if statement, 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 of execution is passed to the next statement after
                  the if block. The syntax of the if statement is given below:
                                                                   Clickipedia
                  Syntax:
                  if (Test Expression):
                                                                    In Python, the non-zero value is interpreted as
                      Indented statement block
                                                                    True. None and 0 are interpreted as False.
                  # if block ends here

               110      Plus (Ver. 3.2)-VII                                                                           110
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