Python Coding Questions Interview

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Python Coding Questions Interview

Mastering Python: Interview Coding Questions

Python Coding Questions Interview

In a Python coding interview, candidates are typically tested on their understanding of fundamental programming concepts, data structures, algorithms, and problem-solving skills. They may be asked to write code to solve algorithmic problems, debug existing code, or optimize code efficiency. Interviewers may also focus on the candidate's ability to write clean, well-structured code, explain their thought process, and handle edge cases. It's important for candidates to practice coding challenges, review common Python interview questions, and be prepared to demonstrate their knowledge and skills under pressure.

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1 - Explain the difference between lists and tuples in Python.

Lists and tuples in Python are both used to store multiple items, but there are key differences between them. Lists are mutable, meaning that their elements can be modified after the list is created, while tuples are immutable, meaning that their elements cannot be changed. Additionally, lists are defined using square brackets [] while tuples are defined using parentheses (). 

2) What is the significance of “__init__” in Python classes?

In Python, “__init__” is a special method that gets called when a new instance of a class is created. It is used to initialize the attributes of the object and perform any necessary setup. This method is commonly used to assign initial values to instance variables.

3) Describe the difference between “==” and “is” in Python.

The “==” operator is used to compare the values of two objects in Python, while the “is” operator is used to check if two variables are referencing the same object in memory. In other words, “==” checks for equality of values, while “is” checks for identity.

4) How can you handle exceptions in Python?

In Python, exceptions can be handled using the try except block. Code that might raise an exception is placed inside the try block, and if an exception occurs, the corresponding except block is executed. Additionally, you can use the finally block to clean up resources or perform necessary actions regardless of whether an exception was raised.

5) Explain the difference between “append” and “extend” methods in Python lists.

The “append” method in Python is used to add a single element to the end of a list, while the “extend” method is used to add multiple elements, such as another list, to the end of the existing list. This means that “append” will add the object itself, while “extend” will add the elements of the object individually.

 

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