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    KEYWORDS
                      Keywords are the reserved words. They are predefined words. Keywords cannot be used as an
                      identifier.

                      Some commonly used keywords in Python are given below:

                        False     del        for        in         or         while     None       break         elif

                        from      is         with       True       else       global    and        continue      if
                        return    as         def        finally    import     not

                      CONSTANTS OR LITERALS

                      Constants are fixed values that do not change during the execution of a program. Literals are the
                      type of constants. Literals refer to any number, text and other information that represents a value.
                      Python supports the following literals:

                                                    Literals                    Example

                                             String literals          “hello”, ‘12345’

                                             Integer literals         0, 1, 2, -1, -2

                                             Long literals            89675L

                                             Floating-point literals  3.14

                                             Complex literals         12j

                                             Boolean literals         True or False

                                             Special literals         None

                                             Unicode literals         u“hello”
                                             List literals            [5,6,7]

                           Tick ( ) if you know this.

                           ▶   Identifiers refers to the  name of a variable, function, array, etc.
                           ▶  A token is the smallest element of a Python program that is meaningful to the interpreter.

                      OPERATORS

                      Operators are special symbols that are used to perform some specific operations on operands and
                      give a meaningful result. Operands are the variables or constants involved in the mathematical
                      or logical operations.

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