Question 1

What is Python?

Accepted Answer

Python is a high-level, interpreted programming language. It is also known as a general-purpose programming language with a vast collection of tools and libraries that can be used to develop applications for many domains.

Question 2

What type of language is Python?

Accepted Answer

Python is a high-level, interpreted, programming language. It has a straightforward syntax that is easy to read and write. Python supports procedural, object-oriented, and functional programming. It is known as a beginner-friendly language and is suitable for a wide range of applications.

Question 3

Is Python fully object oriented?

Accepted Answer

Yes, Python is a fully object-oriented programming (OOP) language. Everything in Python is an object, and the language supports basic OOP concepts such as inheritance, polymorphism, and more, except access specifiers. Python doesn’t support strong encapsulation. Although, it has a convention that can be used for data hiding.

Question 4

What are some benefits of using Python for development?

Accepted Answer

Python is an open source programming language that has a simple, easy-to-read syntax. Applications built with Python are easy to maintain. Further, the programming language supports third-party packages, which makes it possible to modify and reuse the code.

Question 5

What is the difference between lists and tuples in Python?

Accepted Answer

In Python, sequence data types that can store a collection of objects are called Lists and Tuples. The objects stored in lists and tuples can have different data types. Lists are represented with square brackets [‘sara’, 6, 0.19], while tuples are represented with parantheses (‘ansh‘, 5, 0.97). Lists are mutable. They can be modified, appended or sliced on the go. On the other hand, tuples are immutable and cannot be modified in any way.

Question 6

What is Lambda in Python?

Accepted Answer

Lambda is an anonymous function in Python that can accept any number of arguments but can only have a single expression. It is generally used in situations that require an anonymous function for a short time period.

Question 7

How is multi-threading achieved in Python?

Accepted Answer

The multi-threading package in Python increases the time taken to execute a code. Instead, the GIL constructor ensures that only a single thread is executed at one time. Because of this process, a thread works with the acquired GIL and then passes the GIL onto the next thread. This is an instant process, which gives the illusion of parallel execution to the human observer. The threads, however, take turns utilizing the same CPU core as they execute sequentially.

Question 8

What is SVM?

Accepted Answer

Support Vector Machine (SVM) is a machine learning algorithm used for classification and regression tasks. It works by finding a hyperplane in a high-dimensional space that separates data points of different classes with a maximum margin. SVM is effective for both linear and non-linear data and is widely used in various applications, including image classification, text categorization, and pattern recognition.

Question 9

Is it necessary to declare variables with respective data types in Python?

Accepted Answer

No. Since Python is a dynamically typed language, you don’t need to explicitly declare the data type of a variable. The data type of a variable is automatically identified by the Python Interpreter based on the type of value assigned.

Question 10

What do file-related modules in Python do? Name some file-related modules in Python.

Accepted Answer

File-related modules in Python can manipulate text files and binary files in a file system. These modules can create text or binary files and update content by carrying out operations like copy, delete, and more. Some examples are:

os:  Operating system interface     
 shutil:  High-level file operations     
 glob:  Pattern matching on file names     
 os.path:  Common pathname manipulations

Question 11

What are unit tests in Python?

Accepted Answer

In Python, unit testing is an important function used to test individual units or components of code to ensure their proper function. The two main frameworks that make unit testing easier are unittest and PyTest.

Question 12

Mention any two differences between loc and iloc

Accepted Answer

Loc indexing is label-based, whereas iloc indexing is integer position-based. With respect to slicing, loc end label is inclusive in the range, whereas for iloc, it is exclusive in the range.

Question 13

How is multi-threading achieved in Python?

Accepted Answer

The multi-threading package in Python increases the time taken to execute a code. Instead, the GIL constructor ensures that only a single thread is executed at one time. Because of this process, a thread works with the acquired GIL and then passes the GIL onto the next thread. This is an instant process, which gives the illusion of parallel execution to the human observer. The threads, however, take turns utilizing the same CPU core as they execute sequentially.

Question 14

How to install Python on Windows and set a path variable?

Accepted Answer

Install Python from this link:   https://www.Python.org/downloads/

After this, install it on your PC. Look for the location where PYTHON has been installed on your PC using the following command on your command prompt: cmd Python.     
Then go to advanced system settings, add a new variable, and name it PYTHON_NAME and paste the copied path.   
Look for the path variable, select its value and select ‘edit’.   
Add a semicolon towards the end of the value if it’s not present, and then type %PYTHON_HOME%

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