Python Interview questions.

 Python Interview Questions-

1. what is the difference between interactive mode and script mode in python language?
2. what is variables and also define the objects of it?
3. what are the data types used it python?
4. what do you mean by keywords in python programming language?
5. what is operator and operands in python. 
6. what is input and output in python language?
7. how do you use comments in python and why you use it in your coding?
8. describe the function in python and how many types of function used in python?
9. what do you mean by parameters and arguments in function used in python?
10. how to describe flow of execution in python programming language? 
11. what do you understand by sequential statements in python? 
12. what do you mean by selective statements in python?
13. define iterative statements in python?
14. what do you understand by string and also define string operations with string functions?
15. define the list with list slices and list methods?

Here are some common Python interview questions along with brief explanations:

### Basic Questions

1. **What is Python?**

   - A high-level, interpreted programming language known for its readability and versatility.

2. **What are Python's built-in data types?**

   - Integers, floats, strings, lists, tuples, sets, and dictionaries.

3. **Explain the difference between a list and a tuple.**

   - Lists are mutable (can be changed), while tuples are immutable (cannot be changed).

### Intermediate Questions

4. **What are Python decorators?**

   - Functions that modify the behavior of another function or method.

5. **What is list comprehension?**

   - A concise way to create lists using a single line of code, often incorporating a loop and condition.

6. **Explain the concept of generators.**

   - Functions that return an iterator and use the `yield` keyword to produce a sequence of values lazily.

### Advanced Questions

7. **What is the Global Interpreter Lock (GIL)?**

   - A mechanism that prevents multiple native threads from executing Python bytecodes simultaneously, affecting multi-threaded performance.

8. **What are Python's memory management techniques?**

   - Involves reference counting and garbage collection.

9. **Explain the difference between shallow copy and deep copy.**

   - A shallow copy creates a new object but inserts references into it to the objects found in the original; a deep copy creates a new object and recursively adds copies of nested objects.

### Coding Questions

10. **How do you reverse a string in Python?**

    - Using slicing: `reversed_string = original_string[::-1]`.

11. **Write a function to check if a string is a palindrome.**

    ```python

    def is_palindrome(s):

        return s == s[::-1]

    ```

12. **How do you handle exceptions in Python?**

    - Using `try`, `except`, `finally` blocks to catch and manage exceptions.

### Conceptual Questions

13. **What is the purpose of `self` in class methods?**

    - It refers to the instance of the class and is used to access its attributes and methods.

14. **What is a lambda function?**

    - An anonymous, small function defined with the `lambda` keyword, typically for short operations.

15. **Explain the difference between `==` and `is`.**

    - `==` checks for value equality, while `is` checks for identity (whether they are the same object in memory).

These questions cover a range of topics and can help assess a candidate's proficiency in Python.