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    Program 1: To print odd numbers till 10 using start, stop and step values of a range function.

                          Program1.py                                               Output
                       File  Edit  Format   Run   Options  Window    Help        1
                                                                                 3
                       for i in range (1,10,2):
                                                                                 5
                           print(i)
                                                                                 7
                                                                                 9

                      Program 2: To print a selected range of numbers with start and stop values.

                          Program2.py                                               Output
                       File  Edit  Format   Run   Options  Window    Help        3
                                                                                 4
                       for i in range (3,7):
                                                                                 5
                           print(i)
                                                                                 6

                      Program 3: To print whole numbers from 0 to 9 using only stop value.

                          Program3.py                                               Output
                       File  Edit  Format   Run   Options  Window    Help        0
                                                                                 1
                       for i in range (5):                                       2
                           print(i)                                              3
                                                                                 4

                      THE while LOOP

                      The while loop repeats a block of statements while a given condition is true. The while loop is
                      commonly  used  when  the number of iterations is not known.   In  this looping  construct,  first
                      the condition is checked, and if it is true, the control will move inside the loop and execute the
                      statements until the condition becomes false. If the initial condition is false, then the control will
                      not enter the loop block. The syntax of while loop is as follows:

                      while(Condition):
                          statement(s)
                          increment/decrement
                      Program 4: To demonstrate the use of a while loop.
                          Program4.py
                       File  Edit  Format   Run   Options   Window   Help           Output
                                                                                  Count is: 1
                       count = 1
                                                                                  Count is: 2
                       while count < 5:
                                                                                  Count is: 3
                           print("Count is:", count)
                           count += 1                                             Count is: 4

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