Most asked Python interview questions

Question 1 : Explain Python?

Answer: Python was developed by Guido van Rossum and was released first on February 20, 1991. It is one of the most widely-used and loved programming languages. Python is a highly comprehensive, interactive, and object-oriented scriptwriting language. It is specifically developed with the purpose of making the content highly readable among the net surfers. Python makes use of various English keywords other than just punctuations. It is also a free and open-source language with very simple and clean syntax. This makes it easy for developers to learn python. Python also supports object-oriented programming and is most commonly used to perform general-purpose programming. 

Python is also used in Machine Learning, Artificial Intelligence, Web Development, Web Scraping, and various other domains due to its ability to support powerful computations using powerful libraries.

Benefits of Python:

• Python is a general-purpose programming language that has a simple, easy-to-learn syntax that emphasizes readability and therefore reduces the cost of program maintenance. Moreover, the language is capable of scripting, is completely open-source, and supports third-party packages encouraging modularity and code reuse.
• Its high-level data structures, combined with dynamic typing and dynamic binding, attract a huge community of developers for Rapid Application Development and deployment.

Question 2 : What are the distinct features of Python?

Answer: The distinct features of Python include the following.

1. Structured and functional programmings are supported.
2. It can be compiled to byte-code for creating larger applications.
3. Develops high-level dynamic data types.
4. Supports checking of dynamic data types.
5. Applies automated garbage collection.
6. It could be used effectively along with Java, COBRA, C, C++, ActiveX, and COM.

Question 3 : What is Pythonpath?

Answer: A Pythonpath tells the Python interpreter to locate the module files that can be imported into the program. It includes the Python source library directory and source code directory.

Question 4 : Can we preset Pythonpath?

Answer: Yes, we can preset Pythonpath as a Python installer.

Question 5 : What is a Typing?

Answer: Typing refers to type-checking in programming languages. In a strongly-typed language, such as Python, “3” + 4 will result in a type error since these languages don’t allow for “type-coercion” (implicit/automatic conversion of data types). On the other hand, a weakly-typed language, such as Javascript, will simply output “34” as result.

Type-checking can be done at two stages –

• Static – Data Types are checked before execution.
• Dynamic – Data Types are checked during execution.

Python is an interpreted language, executes each statement line by line and thus type-checking is done during execution. Hence, Python is a Dynamically Typed Language.

Question 6 : What is PEP 8 ?

Answer: PEP 8, sometimes spelled PEP8 or PEP-8, is a document that provides guidelines and best practices on how to write Python code. It was written in 2001 by Guido van Rossum, Barry Warsaw, and Nick Coghlan. The primary focus of PEP 8 is to improve the readability and consistency of Python code.

Question 7 : Define tuples in Python?

Answer: Tuples is a sequence data type in Python. The number of values in tuples are separated by commas.

Question 8 : What is the major difference between tuples and lists in Python?

Answer: There are several major differences between tuples and lists in Python, which include the following:

Tuples	Lists
Tuples are similar to a list, but they are enclosed within parenthesis, unlike the list.	The list is used to create a sequence.
The element and size can be changed.	The element and size cannot be changed.
They cannot be updated.	They can be updated.
They act as read-only lists.	They act as a changeable list.
Tuples are surrounded by ( )	Lists are surrounded by [ ]
Example of Tuple Code is, tup = (1, “a”, “string”, 1+2)	Example of Lists Code is, L = [1, “a” , “string” , 1+2]

Question 9 : Define Pass statement in Python?

Answer: A Pass statement in Python is used when we cannot decide what to do in our code, but we must type something for making syntactically correct.

Question 10 : What are the limitations of Python?

Answer: There are certain limitations of Python, which include the following:

1. It has design restrictions.
2. It is slower when compared with C and C++ or Java.
3. It is inefficient in mobile computing.
4. It consists of an underdeveloped database access layer.

Question 11 : Why do we need a break in Python?

Answer: Break helps in controlling the Python loop by breaking the current loop from execution and transfer the control to the next block.

Question 12 : Why do we need a continue in Python?

Answer: A continue also helps in controlling the Python loop but by making jumps to the next iteration of the loop without exhausting it.

Question 13 : Can we use a break and continue together in Python? How?

Answer: Break and continue can be used together in Python. The break will stop the current loop from execution, while continue will make jump to another loop.

Question 14 : What is an Interpreted language?

Answer: An Interpreted language executes its statements line by line. Languages such as Python, Javascript, R, PHP, and Ruby are prime examples of Interpreted languages. Programs written in an interpreted language runs directly from the source code, with no intermediary compilation step.

Keep following us for more upcoming educational content. You can also leave a comment, if you want us to publish on other subjects or technology.