(i) Hexadecimal literal
(ii) Complex literal
(iii) Floating point literal
(iv) Octal literal

(i) 100
(ii) 100.0
(iii) 100
(iv) 3

(i) Comment
(ii) Operands
(iii) 3

(i) An identifier must start with an alphabet (A..Z or a..z) or underscore (_)..
(ii) Identifiers may contain digits (0 .. 9).
(iii) Python identifiers are case sensitive i.e. uppercase and lowercase letters are distinct. (iv) Identifiers must not be a python keyword.
(v) Python does not allow punctuation character such as %,$, @ etc., within identifiers.

(i) Python uses whitespace such as spaces and tabs to define program blocks whereas other languages like C, C++, java use curly braces { } to indicate blocks of codes for class, functions or body of the loops and block of selection command.
(ii) The number of whitespaces (spaces and tabs) in the indentation is not fixed, but all statements within the block must be indented with same amount spaces.

(i) In Python, comments begin with hash symbol (#). The lines that begins with # are considered as comments and ignored by the Python interpreter.
(ii) Comments may be single line or no multilines. The multiline comments should be enclosed within a set of # as given below.
# It is Single line Comment
# It is multiline comment
which contains more than one line #

(i) In Python, comments begin with hash symbol (#). The lines that begins with # are considered as comments and ignored by the Python interpreter.
(ii) Comments may be single line or no multilines. The multiline comments should be enclosed within a set of # as given below.
# It is Single line Comment
# It is multiline comment
which contains more than one line #

x = int(input ("Enter Number 1")
y = int(input("Enter Number 2")
print ("The sum of", x, " and ", y, "is", x+y)

x, y = int (input("Enter Number 1:")),
int (input ("Enter Number 2:" ))
print ("X =,x", " Y =, y" )
Output:
Enter Number 1 : 30
Enter Number 2 : 50
X= 30 Y = 50

x = input ("Enter number")
Reason : If a numerical value is entered, the input values should be explicitly converted into numeric data type. The int ( ) function is used to convert string data as integer data explicitly.

(1) int
(2) int
(3) input
(4) print
(5) x + y

(1) input
(2) Chennai
(3) City

(i) to open Python shell window.
(ii) to save the Python file.
(iii) to run the Python program.

(i) In Python, programs can be written in two ways namely Interactive mode and Script mode.
(ii) The Interactive mode allows us to write codes in Python command prompt >>> whereas in script mode programs can be written and stored as separate file with the extension.
(iii) py and executed. Script mode is used to create and edit python source file.

(i) It is a general purpose programming language which can be, used for both scientific and non-scientific programming.
(ii) It is a platform independent programming language.
(iii) The programs written in Python are easily readable and understandable.