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Python Installation First Python Program

Variables Data Types Typecasting Input / Output Operators

Add Two Numbers Simple Interest Area of Circle Students marks Percentage Temperature Conversion Swap Variables Reverse a Number

Python - Lists Python Lists Methodss Access List Items Change List Items Add List Items Remove List Items List Items Access by loop List Comprehension Sort Lists Copy Lists Join Lists

Python - Tuples Access Tuple Items Update Tuples Unpack Tuples Loop Through Tuples Join Tuples Tuple Methods Tuple Delete Tuple Exercises

Python - Sets Access Set Items Add Set Items Remove Set Items Loop Through Sets Update Sets Join Sets Copy Sets Set Operators Set Methods Set Exercises

Control Flow if...else nested if else match-case logical-operators for loops while loops break / continue Functions Defining Functions Function Arguments Function return value Lambda Function Recursion

OOP Introduction Classes & Objects Constructor Instance vs Class Variables Instance & Class Methods Inheritance Multiple Inheritance Multilevel Inheritance Polymorphism Encapsulation Abstraction Dunder Getters & Setters OOP Exercises

Exception Handling Exception Handling Try Except Else and Finally Raise Exception Custom Exceptions File Handling File in python Read File Write File Append File Delete File Exception Handling

Modules Lambda Functions map(), filter(), reduce() Multithreading

Copying Lists in Python

There are multiple ways to copy lists in Python. Some methods create real copies, others just references. Let's explore them with examples.

1. Assignment (Reference)

original = ["abhishek", "badri"]
copied = original
copied[0] = "devendra"
print(original)

Output:

['devendra', 'badri']

2. Using list() Constructor

original = ["abhishek", "badri"]
copied = list(original)
copied[0] = "devendra"
print(original)

Output:

['abhishek', 'badri']

3. Using Slicing [:]

original = ["abhishek", "badri"]
copied = original[:]
copied[0] = "chandrakant"
print(original)

Output:

['abhishek', 'badri']

4. Using copy() Method

original = ["abhishek", "badri"]
copied = original.copy()
copied[0] = "devendra"
print(original)

Output:

['abhishek', 'badri']

5. Using list comprehension

original = ["abhishek", "badri"]
copied = [item for item in original]
copied[1] = "chandrakant"
print(original)

Output:

['abhishek', 'badri']

6. Using copy module (deepcopy)

import copy
original = [["abhishek"], ["badri"]]
copied = copy.deepcopy(original)
copied[0][0] = "devendra"
print(original)

Output:

[['abhishek'], ['badri']]

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