Operations in python with examples in details

 In Python, you can perform various operations with different data types using operators. Here's an overview of some common operations with detailed examples:

1. Arithmetic Operations:

• Addition (+): Adds two operands.

Python

a = 5
b = 3
sum = a + b  # sum will be 8
print(sum)

• Subtraction (-): Subtracts one operand from another.

Python

difference = a - b  # difference will be 2
print(difference)

• Multiplication (*): Multiplies two operands.

Python

product = a * b  # product will be 15
print(product)

• Division (/): Divides one operand by another. For integers, results in floor division (quotient rounded down).

Python

quotient = a / b  # quotient will be 1 (integer division)
print(quotient)

• Floor division (//): Divides and rounds the result down to the nearest integer.

Python

floor_quotient = a // b  # floor_quotient will be 1
print(floor_quotient)

• Modulo (%): Returns the remainder after division.

Python

remainder = a % b  # remainder will be 2
print(remainder)

• Exponentiation ():** Raises one operand to the power of another.

Python

power = a ** b  # power will be 125
print(power)

2. String Operations:

• Concatenation (+): Joins two strings together.

Python

name = "Alice"
greeting = "Hello, " + name + "!"
print(greeting)  # Output: Hello, Alice!

• Multiplication (*): Repeats a string a specified number of times.

Python

repeated_word = "Hi " * 3
print(repeated_word)  # Output: Hi Hi Hi

• Indexing: Accesses characters based on their position (starts from 0).

Python

first_letter = name[0]  # first_letter will be "A"
print(first_letter)

• Slicing: Extracts a substring within a specific range.

Python

last_letter = name[-1]  # last_letter will be "e"
print(last_letter)

substring = name[1:4]  # substring will be "lic"
print(substring)

3. List Operations:

• Accessing elements: Uses indexing and slicing similar to strings.

Python

my_list = [1, 2, 3, 4]
first_element = my_list[0]  # first_element will be 1
print(first_element)

sublist = my_list[1:3]  # sublist will be [2, 3]
print(sublist)

• Appending (+): Adds an element to the end of the list.

Python

my_list.append(5)  # Adds 5 to the end
print(my_list)  # Output: [1, 2, 3, 4, 5]

• Inserting (insert): Inserts an element at a specific index.

Python

my_list.insert(1, "apple")  # Inserts "apple" at index 1
print(my_list)  # Output: [1, "apple", 2, 3, 4, 5]

• Removing (remove): Removes the first occurrence of an element.

Python

my_list.remove("apple")  # Removes "apple"
print(my_list)  # Output: [1, 2, 3, 4, 5]

4. Dictionary Operations:

• Accessing values: Uses keys to retrieve corresponding values.

Python

my_dict = {"name": "Bob", "age": 30}
name = my_dict["name"]  # name will be "Bob"
print(name)

• Adding key-value pairs: Assigns a value to a new key.

Python

my_dict["city"] = "New York"  # Adds "city" key with value "New York"
print(my_dict)  # Output: {"name": "Bob", "age": 30, "city": "New York"}

• Modifying values: Updates the value associated with an existing key.