Page 137 - Trackpad_V5_Book 7
P. 137

Combination of variables, constants and operators makes an expression.


                                      Operator             Operator



            Expression:       a           +          5         =          20



                           Variable              Constant


            Now learn about various types of operators.


            Arithmetic Operators

            These operators are used to do arithmetical operations.


                                                                              Example
                Operator           Name               Description           (x=7 and y=3)          Output



                                                 Adds values on either
                     +          Addition                                         x + y                10
                                                 side of the operator.

                                                 Subtracts right hand
                     –          Subtraction      operand from left hand          x – y                 4
                                                 operand.

                                                 Multiplies values on
                     *          Multiplication   either side of the              x * y                21
                                                 operator.

                                                 Divides left hand
                     /          Division         operand by right hand           x / y            2.3333335

                                                 operand.
                                                 Divides left hand

                                                 operand by right hand
                    %           Modulus                                          x % y                 1
                                                 operand and returns
                                                 the remainder.
                                                 Performs exponential

                    **          Exponentiation   (power) calculation on         x ** y                343
                                                 operands.

                                                 Divides and cuts the
                                Floor or Integer
                    //                           fractional part from the        x // y                2
                                division
                                                 result.




                                                                               Tokens and Data Types in Python  135
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