Fresher interview prep
Python Developer interview questions for freshers.
Fresher Python interviews cover data types, functions, common libraries and a short coding exercise, plus questions on your projects.
1. What is the difference between a list and a tuple?
How to answer: Lists are mutable; tuples are immutable, so tuples can be dictionary keys and signal fixed data.
2. What are *args and **kwargs?
How to answer: *args collects extra positional arguments as a tuple; **kwargs collects extra keyword arguments as a dictionary.
3. Explain list comprehensions with an example.
How to answer: A concise way to build lists: [x * x for x in range(10) if x % 2 == 0]. Mention readability limits.
4. What is the difference between deep copy and shallow copy?
How to answer: A shallow copy shares nested objects with the original; a deep copy duplicates them, using copy.deepcopy().
5. What are decorators?
How to answer: Functions that wrap another function to add behaviour, applied with @. Logging or timing are good examples.
6. How is memory managed in Python?
How to answer: CPython uses reference counting plus a garbage collector for reference cycles.
7. How would you remove duplicates from a list while keeping order?
How to answer: list(dict.fromkeys(items)) keeps first occurrences in order, since dictionaries preserve insertion order.
8. Which Python libraries have you used in a project?
How to answer: Pick ones you truly used (pandas, Flask, Django, NumPy) and explain what each did in your project.
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