The formatting operator % is used to construct strings, replacing parts of the strings with the data stored in variables.

(i) Learn
(ii) r
(iii) er
(iv) ceoenyo

strl = input ("Enter your name")
print (strl * 10)

(i) Once you define a string, python allocate an index value for its each character.
(ii) These index values are otherwise called as subscript which are used to access and manipulate the strings. The subscript can be positive or negative integer numbers.

Syntax:
def function_name (parameter(s) separated by comma):

Example:
def hello():
print ("hello - Python")
return
print (hello())
Output:
hello - Python
None

A block is one or more lines of code, grouped together so that they are treated as one big sequence of statements while execution.

Output:
1, 3, 5, 7
End of the loop

Python provides two types of looping constructs:
(i) while loop
(ii) for loop

Tuples consists of a number of values separated by comma and enclosed within parentheses. Tuple is similar to list, values in a list can be changed but not in a tuple.

(i) Mylist contains another list as an element. This type of list is known as "Nested List': Nested list is a list containing another list as an element.
(ii) Example: Mylist = [ "Welcome", 3.14, 10, [2,4,6] ]

Big Omega is the reverse Big O, if Big O is used to describe the upper bound (worst - case) of a asymptotic function, Big Omega is used to describe the lower bound (best-case).

(i) Time factor
(ii) Space factor

An estimation of the time and space complexities of an algorithm for varying input sizes is called algorithm analysis.

Keywords are special words that are used by Python interpreter to recognize the structure of program.

(i) New line
(ii) Tab

A Relational operator is also called as Comparative operator which checks the relationship between two operands. If the relation is true, it returns True otherwise it returns False.

(iv) name = "Kumar"
Reason: No function character allowed within identifiers.

Whitespace separation is necessary between tokens, identifiers or keywords.

(i) The input () is usedto display the result of the program after execution.
(ii) Reason: The input () function helps to enter data at run time buy the user not to display the output.

The output of the program
10
10

The LEGB rule is used to decide the order in which the scopes are to be searched for scope resolution. The scopes are listed below in terms of hierarchy (highest to lowest).

(i) A class defines a data abstraction by grouping related data items. A class is not just data, it has functions defined within it.
(ii) Functions are subordinate to the class because their job is to do things with the data of the class.

(i) A pair is a compound data type that holds two other pieces of data. The two ways of representing the pair data type.
(ii) The first way is using List construct and the second way to implement pairs is with the tuple construct.

The pseudo code for the representation of the rational number using the above constructor and selector is component
x,y:=8,3
rational(n,d)
numer(x)/numer(y)
- - output: 2.6666666666666665