python programming overview
MockMock Python Interview Questions
🔹 1. Python Fundamentals
What are Python’s key features?
What are the differences between Python 2 and Python 3?
What is PEP 8 and why is it important?
What is the difference between a list, tuple, and set?
**What are *args and kwargs in Python functions?
What is the difference between is and ==?
Explain Python’s memory management.
What is a Python virtual environment and why would you use it?
What is the difference between deepcopy() and copy() in Python?
Explain list comprehension and give an example.
🔹 2. OOP in Python
What are Python’s core object-oriented programming concepts?
What is the difference between a class and an object?
What are instance methods, class methods, and static methods?
What is inheritance in Python? How does super() work?
Explain polymorphism with an example.
What is encapsulation, and how do you enforce it in Python?
What are dunder/magic methods like __init__, __str__, __repr__, __eq__?
🔹 3. Python Data Structures & Algorithms
When would you use a dictionary over a list?
What is the time complexity of searching in a set vs a list?
How do you implement a stack or queue in Python?
How do you sort a dictionary by its values or keys?
Explain how defaultdict or Counter from collections works.
How do you find duplicates in a list?
What are generators? How do they differ from iterators?
How is enumerate() different from using a standard loop with index?
🔹 4. File Handling & Exception Handling
How do you open, read, and write to a file in Python?
What is a context manager? What does the with statement do?
Explain exception handling. What is the purpose of try, except, finally, and else?
What are custom exceptions and how do you define one?
How can you log errors instead of just printing them?
🔹 5. Functional Programming & Decorators
What are lambda functions and when would you use one?
Explain map(), filter(), and reduce() with examples.
What is a decorator? Show an example.
What is a closure in Python?
How do you memoize a function in Python?
🔹 6. Python Libraries & Tools
What’s the difference between NumPy arrays and Python lists?
How does Pandas handle missing values?
What is the difference between loc[] and iloc[] in Pandas?
What’s the use of Scikit-learn’s train_test_split and GridSearchCV?
How do you serialize and deserialize objects using Pickle?
What is a Jupyter Notebook kernel and how does it work?
How do you manage dependencies in Python projects?
What does a requirements.txt file do?
Explain the difference between pip and conda.
🔹 7. Python for Web Apps & APIs
What is Flask and how does it compare to Django?
How do you create a basic REST API using Flask?
What is request.args vs request.form in Flask?
How do you deploy a Python Dash/Flask app to Render or Heroku?
How do you secure a Flask or Dash application?
What is a WSGI server and why is it used in Python web development?
🔹 8. Testing & Debugging
How do you test Python code?
What is unittest vs pytest?
How do you mock external services or inputs in Python?
What are breakpoints and how do you debug in PyCharm or VSCode?
🔹 9. Real-World Scenarios (Project-Based)
How would you improve the performance of your model?
How do you handle versioning of your ML models?
Your Dash app crashes after deployment — how do you debug it?
How do you handle dynamic user input in a deployed application?
Your model performs well locally but not in production — what do you check?
Explain the workflow for going from raw data to a deployed model. Python Interview Questions
🔹 1. Python Fundamentals
What are Python’s key features?
What are the differences between Python 2 and Python 3?
What is PEP 8 and why is it important?
What is the difference between a list, tuple, and set?
**What are *args and kwargs in Python functions?
What is the difference between is and ==?
Explain Python’s memory management.
What is a Python virtual environment and why would you use it?
What is the difference between deepcopy() and copy() in Python?
Explain list comprehension and give an example.
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