Top 25 Most Important Python Interview Questions

Python Interview Questions

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Python Interview Questions

All of you know Python, an OOP Language with Perfection. Below are 25 Top 25 Most Important Python Interview Questions which can be helpful for your Interview in this upcoming year 2020:

“Top 25 Most Important Python Interview Questions”

1. What are python and name some key features of it?

Python is an interpreter-based programming language, interactive and object-oriented scripting language. Python is designed to be highly readable.

  • It is an interpreter based language which means that, unlike other languages like C and variants, the compilation doesn’t require before running.
  • It’s dynamically typed, which means you need not to define the datatypes of the declared variables and anything like that.
  • Functions are first-class objects in python.
  • Python can be used for different cross-platform applications like web-apps, scientific models, big data applications, and many more.

2. What are the types of operators are used in Python?

The types of operators which are used by Python are listed below:

  • Arithmetic Operators
  • Relational Operators
  • Assignment Operators

3. Differentiate between tuples and lists in python?

The major difference is tuples are immutable while a list is mutable. It means once you create a tuple you cannot edit or make changes in the value in tuple while in a list we can edit the value in it.

 Tuples                                List
A tuple is a sequence of immutable  objects List are versatile datatype which is Mutable
The syntax for Tuples are shown by parenthesis {} The syntax for List is shown by square brackets []
They are of fixed length The list can be of variable length
Eg: tup_1 = { 10,’john’,5} Eg :  list_1 = [10, ‘john’, 5]

4. What will the maximum length of an identifier?

There is no certain length for Identifier, Identifier can be of any length.

Let move on to the next Python Interview Questions.

5. What do you mean by Decorators?

For modifying or injecting code in functions or classes we use Decorators in Python. With the help of decorators, we can check for permissions and for logging the calls.

Must Read: Django Interview Questions And Answers.

6. What do you mean by the dictionary in Python?

The built-in data types of Python known as Dictionary. E.g. “Country”.

7. Explain Memory Management in python?

Python memory is management is done by python private heap space. All the objects and data structures of pythons are located in the private heap.

8. Explain Python is one Line?

Python is a modern powerful interpreted language with threads, objects, modules, exceptions, and also has the property of automatic memory management.

Let us move on to the next Python Interview Questions.

9. Explain the interpretation in Python?

Programs in python run directly from the source code.

10. Explain the rules for local and global variables in Python?

  1. Global variable: If the variable is defined outside function then it is Global.
  2. Local Variable: If a variable is assigned a new value inside the function then it is local

11. How to share global variables in Python?

By creating a config file and store the global variable to be shared across modules.

12. How to pass optional or keyword parameters from one function to another in Python?

We can arrange arguments using the * and ** specifiers in the function’s parameter list.

Reach to the: Official Website of Python

13. What are the different types of sequences in Python?

Different types of sequences in Python are Strings, Unicode strings, lists, tuples, buffers, and range objects.

14. What is the Lambda form in Python?

Lambda keyword is used to create small random anonymous throw away functions.

15. What is Pickling in Python?

Pickle is a standard module that serializes and de-serializes a Python object structure.

16. How can an object be copied in Python?

By using two ways objects can be copied in python: Shallow copy & Deep copy.

Let us move to the next Python Interview Questions.

17. How do I convert a string to a number?

There are different built-in functions by which we can convert values from one data type to another.

18. Describe how to send emails from a Python Script?

The smtplib module is used to defines an SMTP client session object that can be used to send emails using Pythons Script.

19. What is the command used for exiting the help command prompt?

The command name is “quit”

20.What does the split(), sub() and subn() methods do?

  1. Split() : it uses a regex pattern to split any given string into a created list.
  2. Sub() : It will find all the substring where this regex pattern will match and then replace the string.
  3. Subn() : It is similar to a sub(), it will return the new string along with the other no. of replacements.

21. Mention the way to display the text contents of the files in the reverse order?

First, convert the file into the list and after that reverse this list by utilizing reversed ().

22. What are ODBS modules for Python?

  1. PythonWin ODBC module
  2. MxODBC
  3. Pyodbc

Let us move on to the next Python Interview Questions.

23. What will append() and extend methods do?

  • append() : adds the element at the end.
  • extend() : adds the elements of a different list at the end.

24. What is TKinter or Tk in Python?

The Tklner is the library of Python. It is one of the toolkits for developing the GUI.

25. What is difference between Java and Python?

Java has a static data type while Python has a dynamic typed-data type.

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