Page 96 - KEC Khaitan C7 Flipbook
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random.choice(sequence): Picks a random item from a list or a sequence. For example,
                  Program 2: To use the random.choice(sequence) function.

                      Program.py

                   File  Edit  Format    Run   Options   Window    Help

                   import random
                   colors = ["Red", "Blue", "Green", "Yellow"]                            Output
                   print(random.choice(colors))                                        Green







                            SELECTION STATEMENTS

                  Some problems cannot be solved by performing a set of ordered steps as seen in sequential
                  execution. When programmers are required to execute a particular set of statements depending
                  on a particular  test  condition,  a selection  or decision  making  statement  is required.  Python
                  provides the following selection statements:
                  (i)  if statement     (ii)  if-else statement     (iii)  if-elif-else statement


                  THE if STATEMENT
                  The if statement is a decision-making statement that is used to control the flow of execution of

                  statements.
                  It contains a conditional expression , which is used to compare              Start
                  data. A decision is made based on the result of the comparison.
                  If the result of the expression is true, the statements within the                          False
                                                                                            if condition
                  if block are executed and if the result of the expression is false,
                  the statements within the if block are not executed. There is no                True
                  limitation on the number of statements that can appear within        Statements in if block

                  the if block. Hence, you may add as many statements in the if              execute
                  block as needed. The syntax of if statement is as follows:
                  if (conditional expression):                                                 Stop

                      statement(s)



                                        Subject: If statement execution criteria
                                        A statement or statements indented within an if statement is executed only if
                                        the condition is true, otherwise the control skips the if statement and moves on
                                        to the statements outside the if block.











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