Top 10 Python Interview Questions & Answers

1) what's Python? What are the advantages of using Python?

Python may be a programing language with objects, modules, threads, exceptions and automatic memory management. the advantages of pythons are that it's simple and straightforward, portable, extensible, build-in arrangement and it's open-source.

2) what's PEP 8?

PEP 8 may be a coding convention, a group of advice, about the way to write your Python code more readable.

3) what's pickling and unpickling?

Pickle module accepts any Python object and converts it into a string representation and dumps it into a file by using the dump function, this process is named pickling. While the method of retrieving original Python objects from the stored string representation is named unpickling.

4) How Python is interpreted?

Python language is an interpreted language. Python program runs directly from the ASCII text file. It converts the ASCII text file that's written by the programmer into an intermediate language, which is again translated into machine language that has got to be executed.

5) How memory is managed in Python?

• Python memory is managed by Python private heap space. All Python objects and data structures are located during a private heap. The programmer doesn't have access to the present private heap and the interpreter takes care of this Python private heap.

• The allocation of Python heap space for Python objects is completed by the Python memory manager. The core API gives access to some tools for the programmer to code.

• Python even has an inbuilt garbage man, which recycles all the unused memory and frees the memory and makes it available to the heap space.

6) What are the tools that help to seek out bugs or perform the static analysis?

PyChecker may be a static analysis tool that detects the bugs in Python ASCII text file and warns about the design and complexity of the bug. Pylint is another tool that verifies whether the module meets the coding standard.

7) What are Python decorators?

A Python decorator may be a specific change that we make in Python syntax to change functions easily.

8) what's the difference between list and tuple?

The difference between list and tuple is that list is mutable while tuple isn't. A tuple is often hashed for e.g as a key for dictionaries.

9) How are arguments gone by value or by reference?

Everything in Python is an object and every one variable holds references to the objects. The reference values are consistent with the functions; as a result, you can't change the worth of the references. However, you'll change the objects if it's mutable.

10) what's Dict and List comprehensions are?

They are syntax constructions to ease the creation of a Dictionary or List supported existing iterable.

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