7 Python Programming Language Interview Questions

Below are 7 simple Python Programming Language questions which can be asked in a Python Related job interview.

Q. 1 – Explain Modules in Python Programming Language

Modules both inbuilt and user defined are ways of writing reusable set of code or reusing common set of code.

  • Python provides many inbuilt modules like math, sys etc.
  • To use a module, we will have to import the same with the help of import statement or “from ..import” statement.

Q. 2 – Explain different ways for importing modules in Python

Modules can be imported using either import statement or from …..import statement.
If just some specific function of a module is needed then use from …..import statement, otherwise use import statement.

Q. 3 – Explain Python’s os module

Python OS Module provides an interface between Python Code and Operating System, through this interface by using different functions you can make some system calls to push OS to do stuff like Opening a File.
Below is a table containing some commonly used os module functions.

FunctionDescription
os.getcwd()Return current working directory
os.getpid()Return current process id
os.close(fd)Close file descriptor fd
os.chdir(path)Change current working directory to path
os.rmdir(path, *, dir_fd=None)Removes directory path

Q. 4 – Explain what is dir function in Python Programming Language

The dir function is used to print various functions which are exposed by a module.

import math
print(dir(math))

Output of Above Code

['__doc__', '__file__', '__loader__', '__name__', '__package__', '__spec__', 
'acos', 'acosh', 'asin', 'asinh', 'atan', 'atan2', 'atanh', 'ceil', 'comb', 
'copysign', 'cos', 'cosh', 'degrees', 'dist', 'e', 'erf', 'erfc', 'exp', 'expm1', 
'fabs', 'factorial', 'floor', 'fmod', 'frexp', 'fsum', 'gamma', 'gcd', 'hypot', 
'inf', 'isclose', 'isfinite', 'isinf', 'isnan', 'isqrt', 'lcm', 'ldexp', 'lgamma', 
'log', 'log10', 'log1p', 'log2', 'modf', 'nan', 'nextafter', 'perm', 'pi', 'pow', 
'prod', 'radians', 'remainder', 'sin', 'sinh', 'sqrt', 
'tan', 'tanh', 'tau', 'trunc', 'ulp']

Q. 5 – What is use of raise statement in Python Programming Language?

The raise statement is used to generate exception at run time, based upon some condition or constraint imposed.

Q. 6 – Difference between Static Methods and Class Methods in Python?

Static MethodClass Method
Needs no specific parameters though static function can be parameterizedTakes cls as first parameter. cls represents the class on which method is created
Can’t modify class stateCan modify and access class state
Created by using @staticmethod annotationCreated by using @classmethod annotation
Used to create utilitiesUsed to created factories
Not a wrapper functionIt’s a descriptor, wrapping a function and can call resulting object on class
Self-contained codeCode access till Class Level only

Q. 7 – Explain what are Generators in Python Programming Language

  • Generators are used to save memory as they store only some values in memory at a time rather than storing entire dataset in memory
  • Generators make use of yield function which stores the previous state and use it to get to next state
  • Generators are invoked using next function

Gagan

Hi, there I'm founder of ComputerScienceHub(Started this to bring useful Computer Science information just at one place). Personally I've been doing JavaScript, Python development since 2015(Been long) - Worked upon couple of Web Development Projects, Did some Data Science stuff using Python. Nowadays primarily I work as Freelance JavaScript Developer(Web Developer) and on side-by-side managing team of Computer Science specialists at ComputerScienceHub.io

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