Top 100 Python Interview Questions You Must Prepare In 2019

In the programming domain, Python Certification happens to be the most sought-after expertise. Hence, the questions asked during the Python Interview aren’t easy. Ergo, to help you out with the most frequently asked questions, we have curated this blog. The questions enlisted in this blog are no less than a one-stop resource that will boost your knowledge and prepare you for the interview. Out of the many, we are starting with the Python Programming basic questions -

Que 1 - Discuss the key features of Python?

• Python, an interpreted language, unlike other programming languages like C and its variants, don’t require to be compiled before being run.
• This language is typed dynamically. it means that there is no need for stating the kind of variables when you announce them. Simply, do things like x=111 and then x="I'm a string" with zero error.
• The language is perfectly fit for object-orientated programming. Here, it helps the definition of classes, composition, and inheritance. It does not have access specifiers.
• Functions & classes are first-class objects in Python. It means that the functions can be easily assigned to the variable and then returned from different functions as well as passed into functions.
• Although writing the codes of Python is fast, running them is quite slow as compared to compiled languages. Fortunately，Python permits the incorporation of C based augmentations so bottlenecks can be enhanced away. The numpy bundle is a genuine case of this current, it's very fast in light of the fact that a great deal of the calculating it does isn't done by Python.
• Python discovers use in numerous circles – web applications, robotization, logical displaying, huge information applications and some more. It's additionally frequently utilized as a "stick" code to get different dialects and parts to get along.

Que 2 - What type of language is python? Programming or scripting?
Ans: Python is fit for scripting, yet all in all sense, it is considered as a broadly useful programming language. To find out about Scripting, you can allude to the Python Scripting Tutorial.

Que 3 - How is Python an interpreted language?
Ans: A deciphered language is any programming language which isn't in machine-level code before runtime. Hence, Python is a deciphered language.

Que 4 - What is pep 8?
Ans: PEP represents the Python Enhancement Proposal. It is a lot of guidelines that indicate how to design Python code for most extreme coherence.

Que 5 - How is memory managed in Python?
Ans: Memory management in python is overseen by Python private stack space. All Python articles and information structures are situated in a private stack. The developer doesn't approach this private pile. The python translator deals with this.
The designation of pile space for Python articles is finished by Python's memory administrator. The center API offers access to certain apparatuses for the software engineer to code.
Python likewise has an inbuilt trash specialist, which reuses all the unused memory thus that it very well may be made accessible to the pile space.

Que 6 - What is namespace in Python?
Ans: A namespace is a naming framework used to ensure that names are special to abstain from naming clashes.

Que  7 - What is PYTHONPATH?
Ans: It is a domain variable which is utilized when a module is imported. At whatever point a module is imported, PYTHONPATH is additionally admired check for the nearness of the imported modules in different catalogs. The translator utilizes it to figure out which module to stack.

Que 8 - What are the python modules? Name some commonly used built-in modules in Python?
Ans: Python modules are documents containing Python code. This code can either be capacities classes or factors. A Python module is a .py document containing executable code.
A portion of the ordinarily utilized implicit modules are:

• os
• sys
• math
• random
• data time
• JSON

Que  9 - What is type conversion in Python?
Ans: Type conversion means the conversion of one data type into another.

• int() – It changes any data type into integer type
• float() – It changes any data type into float type
• ord() – It changes characters into integer
• hex() – It changes integers to hexadecimal
• oct() – It changes integer to octal
• tuple() – It changes to a tuple.
• set() – It returns the type after converting to set.
• list() – To convert any type of data to list type, use it.
• dict() – It changes a tuple of order (key,value) into a dictionary.
• str() – It helps in converting integer into a string.
• complex(real,imag) – It changes real numbers to complex(real,imag) number.

Que 10 - How to install Python on Windows and set path variable?
Ans: Follow the following steps to install Python on Windows -

• Install python here: https://www.python.org/downloads/
• Thereafter, install it on the system where you need it. Search for the area where PYTHON has been introduced on your PC utilizing the accompanying direction on your command prompt: cmd python.
• At that point go to advanced settings and include another variable and name it as PYTHON_NAME and glue the replicated way.
• Search the path variable and then select its value. Finally, choose ‘edit’.
• Include a semicolon towards the part of the arrangement on the off chance that it's absent and, at that point type %PYTHON_HOME%

Que 11 - Is indentation required in python?
Ans: Indentation is vital for Python. It determines a square of code. All code inside circles, classes, capacities, and so on is indicated inside an indented square. It is typically done utilizing four space characters. In the event that your code isn't indented fundamentally, it won't execute precisely and will toss mistakes also.

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