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3.   Write a Python program to accept the 3 sides of a triangle. Check and display whether the triangle is
                        Equilateral, Isosceles or Scalene.                                           [CBSE HANDBOOK]
























                 The range() Function
                 The range() function in Python generates a sequence of numbers. It is commonly used with for loops to iterate over
                 a specific range of numbers. The syntax of the range function is as follows:

                     range(start, stop, step)
                 where,

                  • •  start: Starting number of the sequence.
                  • •  stop: Generate numbers up to, but not including the last number.
                  • •  step: Difference between each number in the sequence.
                 Python use range( ) function in three ways:

                 1.     range(stop): This generates a sequence of numbers from 0 up to the specified stop value but not including it.
                     It implicitly starts from 0 and increments by 1.

                     Program 20: To demonstrate the use of a range () with only stop value

                     for i in range(5):
                         print(i)
                     Output:

                     0
                     1
                     2
                     3
                     4
                 2.     range(start, stop): This generates a sequence of number beginning with start and going up to stop, but not
                     including the specified stop value. It increments by 1 step.

                     Program 21: To demonstrate the use of a range () with start and stop values

                     for i in range(20, 25):
                         print(i)



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