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    Syntax of print() function:

                      print(<value>)
                      Here, the value can be an expression, string or variable that you want to display. You can also                           In Python, keywords and identifiers are two important concepts that define the structure and
                      print multiple items by separating them with commas.                                                                      naming conventions of a program.

                      For example:                                                                                                              KEYWORDS

                      print("Let's code together!")                                                                                             Keywords are  reserved words with special
                      >>> Let's code together!                                                                                                  meanings in Python, used for tasks like control      Python has 35 reserved keywords that cannot
                                                                                                                                                flow (if, for, while), functions (def) and classes   be used as variable names.
                       Program 1     To use the input( ) and print( ) functions.
                                                                                                                                                (class). They cannot  be used  as variable

                           Program1.py                                                                                                          names. Here is a list of Python keywords:
                        File  Edit  Format   Run   Options   Window    Help                                                                      False            None             True            and              as               assert
                                                                                                                                                 async            await            break           class            continue         def
                        name = input("Enter your name: ")                                                                                        del              elif             else            except           finally          for
                        print("Your name is", name)
                                                                                                                                                 from             global           if              import           in               is
                                                                                                                                                 lambda           nonlocal         not             or               pass             raise
                                                                                                                                                 return           try              while           with             yield
                           Output                                                                                                               You cannot use keywords as variable names. For example, you cannot name a variable ‘if’ or ‘for’.

                        Enter your name: Ankit
                                                                                                                                                IDENTIFIERS
                        Your name is Ankit
                                                                                                                                                An identifier is a name used to uniquely identify a variable, function, class or object in Python. It
                                                                                                                                                represents the values you store, like numbers or text.

                                                                                                                                                Examples of Identifiers:
                       RAPID RECALL                             Tick ( ) if you know this.
                                                                                                                                                     Variable identifiers: age, score, temperature
                          1.  The print() function is used to display output on the screen in Python.
                                                                                                                                                     Function identifiers: print_message(), calculate_sum()

                          2.  The input() function is used to take input from the user.                                                              Class identifiers: Person, Student

                                                                                                                                                       VARIABLES IN PYTHON

                                                                                                                                                In  Python,  variables store values that  can be  accessed  or changed  later. Their names  are
                             CHARACTER SET                                                                                                      identifiers and you don’t need to specify their type because Python is dynamically typed.

                      A  character  set is  the  collection  of characters  a  programming  language  recognises.  Python
                      accepts all ASCII and Unicode characters, including:                                                                      RULES FOR NAMING VARIABLES
                                                                                                                                                When creating variable names, make sure to follow these rules:
                          Letters of the alphabet: All capital letters (A-Z) and small letters (a-z).
                                                                                                                                                     Variable names can contain letters (a-z, A-Z), digits (0-9) and underscores (_).
                          Digits: All digits from 0 to 9.
                                                                                                                                                     Variable names must begin with a letter or an underscore (_), but not a number.
                          Special symbols: Python supports a wide range of special symbols such as:
                                                                                                                                                     Variable names are case-sensitive, so ‘age’ and ‘Age’ are considered two different variables.
                         " ' ; : ! ` ~ @ # $ % ^ & * ( ) _ + - = { } [ ]
                                                                                                                                                     Variable names cannot use Python keywords (such as if, else, for) as variable names.
                          White spaces: White spaces like tab space, blank space, newline (\n) and carriage return (\r).
                                                                                                                                                     Variable names cannot contain spaces.

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