Python is the most sorted programming language after Java in 2019. Whenever you apply for a Job related to the Python or you have selected Python as your programming language for future, you must know some facts and basics about Python either to face the interview or to start the career with Python. In an interview, the interviewer can ask simple questions about Python and if you were not able to give the answer of those simple questions it would be embracing and decrease your confidence level. So it does not matter what is your level in Python, there are some basics questions about Python and their answers must be known to every Python programmer.

Python Interview Questions for Beginners

In this article, we will discuss the 20 most important Python questions often asked in interviews and these questions are of Beginner level.

Question: Name some main Features of Python for which it is Popular.
Answer:

  1. It supports the Functional and structured Programming language, also follows the concepts of OOP’s.
  2. It is a Dynamic language.
  3. It has a feature of Automatic Garbage collection.
  4. It is very easy to interpret.

Question: What is Python?
Answer: Python is a high level, interpreted, dynamic, and Object-oriented Programming language. It is written in the English language which makes it easier to read and understand.

Question: What is lambda in Python?
Answer: Lambda is a special function of Python which allows you to write a function in a single line.

Question: What for keyword does in Python?
Answer: for is a loop which iterates a group of elements basically list.

Question: What is slicing a list or string?
Answer: Slicing a list or String means to select a specific range in a given sequence.

Question: What is the main difference between list and tuples?
Answer: lists are mutable its mean that you can change the value of lists but tuples are immutable you cannot change the values of tuples.

Question: What help() and dir() functions do?
Answer: help() function used to display the documentation string of the object which is placed inside the help function parenthesis.

While dir() function used to display the defined symbol and it returns None.

Question: Name the type of error for this syntax:

>>> k=14
>>> l = ”hello world”
>>> print(k+l)

Answer: TypeError, you cannot concatenate an integer and string directly, to do so you have to change the type of integer to string first.

Question: What is string concatenation and why do we use it?
Answer: String concatenation is a method which concatenates two strings. It’s used to combine two strings together.

E.g.
>>> k= “hello”
>>> l= “world”
>>> p= k+l #string concatenation:
>>> print(p)

#output will be >>> helloworld

Question: What are Dictionaries in Python?
Answer: Dictionaries are the collections of keys and their corresponding values inside the curly braces.

E.g.
>>> dict = {“one”: “its one”, “two” : ” its two”, “three” : “its three”}
>>> print( dict[“two”]) # here we are calling the dict value “its two” using key “two”
>>> its two # output

Question: How to convert any object to a string?
Answer: To convert any object to the string we use simple function str(); consider x is an object so to convert it to string we will write this statement str(x).

Question: What is mutable built-in type in python?
Answer: There are some built-in types in Python which are mutable. By mutable means, their value can be manipulated which is already assigned.

Some examples of Mutable built-in types are:

  • List
  • Sets
  • Dictionaries

Question: Define immutable built-in type with its examples.
Answer: Immutable are those built-in type which value cannot be changed once it assigned.

Some examples of Immutable built-in types:

  • String
  • Tuples
  • Numbers

Question: What pass keyword do?
Answer: When you use pass keyword in your code it simply means that pass the just above statement or function and perform no operation. pass used when you need to leave some statement or function and want no operation to perform because python is an interpreted language and if you just leave any statement or function blank without any explanation it will show an error, so to ignore the error we use pass keyword.

Question: Java is Static Data type and Python is Dynamic data type explain it.
Answer: When we use java we have to define the data type for each variable before we declare the variable which makes the Java a static type. But in Python we do not need to define the data type of each variable, so Python is a Dynamic type.

Question: Comment on how memory managed in Python.
Answer: All the python memory is managed by Python Private Heap Space, all the data structure and Object are located in Private Heap and the Programmer does not have the access to the Private heap. It is Python Interpreter which takes the full care of the Private heap.

Question: What are the Local variables?
Answer: When a variable is assigned inside a function is known as Local variable and only that specific function is allowed to use that variable.

Question: What are the global variables?
Answer: All those variables that can be referenced by the function by using global keyword.

Question: What is Django?
Answer: Django is a Full-stack web framework which is written on python and used to develop the dynamic web application.

Question: What are the module and packages in Python?
Answer: Module: Module is the Python Program file that can be imported to other python Program by using import keyword

Packages: Packages are the folders which contain a bunch of python module and subfolders. Subfolders also contain modules.

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