DataTypes

Question 1

Data Types

Answer 1

Data types in Python define the type of value a variable can hold, such as numbers, text, or more complex structures.

Question 2

Basic Data Type

Answer 2

Basic Data Type
- Numeric Types: int, float, complex
- Text Type: str
- Boolean Type: bool
- None Type: Represents a null or undefined value (None)

Sequence Types
- list: Ordered, mutable collection.
- tuple: Ordered, immutable collection.
- range: Sequence of numbers.

Mapping Type
- dict: Key-value pairs.

Set Types
- set: Unordered, unique elements.
- frozenset: Immutable version of a set.

Special Data Types
- bytes: Immutable sequence of bytes.
- bytearray: Mutable sequence of bytes.

Question 3

Operators

Answer 3

Operators in Python are symbols or keywords used to perform operations on variables and values, such as arithmetic, comparison, or logical evaluations.

Question 4

Types of Operators

Answer 4

Arithmetic Operators
+ - * /
% Modulus: 5 % 3 = 2
** Exponentiation: 5 ** 3 = 125
// Floor Division: 5 // 3 = 1

Comparison Operators
== != > < >= <=

Logical Operators
and or not

Bitwise Operators
& AND: 5 & 3 # 1
^ XOR: 5 ^ 3 # 6
~ NOT: ~5 # -6
&laquo_space; Left shift: 5 &laquo_space;1 # 10
» Right shift:5&raquo_space; 1 # 2

Assignment Operators
= Assign: x = 5
+= Add and assign: x += 3 # x = x + 3
-= Subtract and assign: x -= 3
*= Multiply and assign: x *= 3
/= Divide and assign: x /= 3
%= Modulus and assign: x %= 3

Membership Operators
in: 3 in [1, 2, 3] # True
not in: 4 not in [1, 2, 3] # True

Identity Operators
is: x is y
is not: x is not y

OR: 5 | 3 # 7

Question 5

Conditional Statement

Answer 5

In Python, conditional statements are used to execute a block of code based on certain conditions.
The most common conditional statements are if, elif, and else

Question 6

Loops in Python

Answer 6

Loops in Python are used to repeatedly execute a block of code as long as a specified condition is met.
There are two main types of loops in Python: for, while

for variable in sequence:
# Code block to execute

while condition:
# Code block to execute

Question 7

Control Statements in Loops

Answer 7

1. break:
   Exits the loop prematurely.
   for i in range(5):
   if i == 3:
   break
   print(i)
   Output: 0, 1, 2
2. continue:
   Skips the rest of the loop’s current iteration.
   for i in range(5):
   if i == 3:
   continue
   print(i)
   Output: 0, 1, 2, 4
3. else with Loops:
   Executes if the loop completes normally (without break).
   for i in range(5):
   print(i)
   else:
   print(“Loop completed”)
   Output: 0, 1, 2, 3, 4, Loop completed

Question 8

Data Types vs Data Structures

Answer 8

Data Types

Represent a single value

Simple and atomic.

Purpose: To store one piece of data.

Examples: int, float, str, bool.

Operations: Basic (e.g., arithmetic, concatenation).

Data Structures

Organize and manage multiple values.

Complex and composite.

Purpose: To handle collections of data efficiently.

Examples: list, tuple, set, dictionary.

Operations: Advanced (e.g., indexing, slicing, sorting).

Question 9

Inbuilt data structures in Python

Answer 9

List - A list is an ordered, mutable collection that can store elements of different data types.

Tuple- A tuple is an ordered, immutable collection of elements.

Set- A set is an unordered collection of unique elements.

Dictionary- A dictionary is an unordered collection of key-value pairs.