Tuple() – This function is used to convert to a tuple. The concat() function is used to concatenate two dataframes. Special literal- Python has 1 special literal None which is used to return a null variable. Extensive support for libraries– Python has vast libraries that contain almost any function needed. It also further provides the facility to import other packages using Python Package Manager.

In Python, encapsulation is achievable using private and protected methods and attributes. Inheritance allows for code reuse and modularity, making the code more readable and maintainable. In Python, a function is a block of code reusable throughout a program. Functions are defined using the “def” keyword and can accept input parameters and return output.

The ternary operator is the operator that is used to show conditional statements in Python. This consists of the boolean true or false values with a statement that has to be checked. We can read a random line in a file using the random module. You need to import the OS Module and use os.remove() function for deleting a file in python.

Q66. Explain Inheritance in Python with an example.

Decorators are used for changing the appearance of a function without changing its structure. In Python, a namespace refers to the name that is assigned to each object. It’s a collection of guidelines for formatting Python code for maximum readability. Seaborn is a Python library built on top of matplotlib and pandas to ease data plotting.

Python developer interview questions

Operators are referred to as special functions that take one or more values and produce a corresponding result. In Python, decorators are necessary functions that help add functionality to an existing function without changing the structure of the function at all. These are Middle Python developer job represented by @decorator_name in Python and are called in a bottom-up format. This means that Function and function both are different in pythons like SQL and Pascal. A Python namespace ensures that object names in a program are unique and can be used without any conflict.

What is the easiest way to calculate percentiles when using Python?

This method allocates memory to the new object as soon as it is created. This method can also be used to initialize variables. It takes an iterable, converts into iterator and aggregates the elements based on iterables passed. While the process of retrieving original Python objects from the stored string representation is called unpickling. Whenever we reallocate a global variable in the local scope of a function, the relocation only holds inside the local scope. The variable goes back to the global value when the code returns the global scope.

Behavioral Python interview questions focus on how you have handled past work situations. These help to reveal your personality and skills. The interview format will vary depending on the company. Typically, https://wizardsdev.com/ you can expect an on-site and/or take-home coding challenge. In addition, you will likely also be asked Python interview questions that assess essential soft skills, such as communication and teamwork.

25 Advanced SQL Interview Questions for Data Scientists – KDnuggets

25 Advanced SQL Interview Questions for Data Scientists.

Posted: Tue, 18 Oct 2022 07:00:00 GMT [source]

Tkinter comes with Python, so there is no separate installation needed. You can start using it by importing it in your script. Yes, unlike Java, Python provides users with a wide range of support in terms of inheritance and its usage.

Q106. Which of the following is an invalid statement?

Slicing is a technique for gaining access to specific bits of sequences such as strings, tuples, and lists. Did you know the answers to these Python interview questions? Range() – This returns a list of numbers created using range() function.

  • You may also want to provide an example to emphasize your answer.
  • You need to import the OS Module and use os.remove() function for deleting a file in python.
  • We observed above how, according to studies, Python may not be at the top, but it will undoubtedly be the programming language of the future in 3-4 years.
  • In this article, we will be discussing some commonly asked Python interview questions for Python developers.
  • All code within loops, classes, functions, etc. is specified within an indented block.

An be achieved in Python by using interfaces and abstract classes. Multiple inheritance – a derived class is inherited from more than one base class. Python libraries are a collection of Python packages. Some of the majorly used python libraries are – Numpy, Pandas, Matplotlib, Scikit-learn and many more.

Some file-related modules are os, os.path, and shutil.os. The os.path module has functions to access the file system, while the shutil.os module can be used to copy or delete files. Python comes with some file-related modules that have functions to manipulate text files and binary files in a file system. These modules can be used to create text or binary files, update their content, copy, delete, and more. The map() function in Python has two parameters, function and iterable. The map() function takes a function as an argument and then applies that function to all the elements of an iterable, passed to it as another argument.

What is Pass in Python?

Because we didn’t designate the list, it is a shared value. It means the list doesn’t reset and we get its value as [1, ‘a’]. When we passed the information to the addToList, we did it without a second value. If we don’t have an empty list as the second value, it will start off with an empty list, which we then append. For list2, we appended the value to an empty list, so its value becomes .

Even if the file is too large to fit in memory, your code should work. Make a Python program that checks if a sequence is a Palindrome. Encapsulation refers to the joining of code and data.

In Python, iterators are used to iterate over iterable objects such as lists, tuples, dicts, and sets. Python is an object-oriented programming language. This means that any program can be solved in python by creating an object model. However, Python can be treated as procedural as well as structural language. In Python, Arrays and Lists have the same way of storing data.

Q-15. Can you describe what’s wrong with the below code?

An Interpreted programming language executes its code line by line. Python, Javascript, R, PHP, and Ruby are all examples of interpreted programming languages. Encapsulation in Python ensured the wrapping of data and methods together. Multiple inheritances ensure a class in Python can inherit from more than one base class. Python is becoming the most popular and widely taught programming language in colleges and universities. There are certain Python classes that are very popular all over the world.

Python developer interview questions

It achieves this by creating additional folders to the sys.path directory list of program in Python where it can look for modules and packages. PYTHONPATH is an environment variable that developers use to add additional directories without installing them in the global default location. Asking such questions while hiring Python developers can genuinely help you meet the right and most skillful candidates. A local Python scope available in the current function is referred to as local scope. Python scopes work as dictionaries that map names to objects. These dictionaries are popularly known as namespaces.

How to create an empty class in Python?

Encapsulation is demonstrated through a Python class. Monkey patches are solely used in Python to run-time dynamic updates to a class or module. Although Python includes a multi-threading module, it is usually not a good idea to utilize it if you want to multi-thread to speed up your code. The append(), extend(), and insert procedures can be used to add elements to an array. Explain the split(), sub(), and subn() methods of the Python “re” module.