1)  What is Python? What are the benefits of using Python?

Python is a programming language with objects, modules, threads, exceptions and automatic memory management. The benefits of pythons are that it is simple and easy, portable, extensible,build-in data structure and it is an open source.

2)  What is PEP 8?

PEP 8 is a coding convention, a set of recommendation, about how to write your Python codemore readable.

3)  How Python is interpreted?

Python language is an interpreted language. Python program runs directly from the source code. Itconverts the source code that is written by the programmer into an intermediate language, which is again translated into machine language that has to be executed.

4)  How memory is managed in Python?

• Python memory is managed by Python private heap All Python objects and data structures are located in a private heap. The programmer does not have an access to thisprivate heap and interpreter takes care of this Python private heap.
• The allocation of Python heap space for Python objects is done by Python memorymanager. The core API gives access to some tools for the programmer to code.
• Python also have an inbuilt garbage collector, which recycle all the unused memory andfrees the memory and makes it available to the heap space.

5)  What are Python decorators?

A Python decorator is a specific change that we make in Python syntax to alter functions easily.

6)  What is the difference between list and tuple?

The difference between list and tuple is that list is mutable while tuple is not. Tuple can be hashedfor e.g as a key for dictionaries.

7)  What is Dict and List comprehensions are?

They are syntax constructions to ease the creation of a Dictionary or List based on existingiterable.

8)  What are the built-in type does python provides?

There are mutable and Immutable types of Pythons built in types Mutable built-in types

• List
• Sets
• D

 

ictionar ies Immut able built-in types

• Strings
• Tuples
• Numbers

9)  What is lambda in Python?

It is a single expression anonymous function often used as inline function.

10)   Why lambda forms in python does not have statements?

A lambda form in python does not have statements as it is used to make new function object andthen return them at runtime.

11)   What is pass in Python?

Pass means, no-operation Python statement, or in other words it is a place holder in compoundstatement, where there should be a blank left and nothing has to be written there.

12)   In Python what are iterators?

In Python, iterators are used to iterate a group of elements, containers like list.

13)   In Python what is slicing?

A mechanism to select a range of items from sequence types like list, tuple, strings etc. is known asslicing.

14)   What are generators in Python?

The way of implementing iterators are known as generators. It is a normal function except that ityields expression in the function.

15)   What is docstring in Python?

A Python documentation string is known as docstring, it is a way of documenting Python functions,modules and classes.

16)   How can you copy an object in Python?

To copy an object in Python, you can try copy.copy () or copy.deepcopy() for the general case. Youcannot copy all objects but most of them.

17)   How you can convert a number to a string?

In order to convert a number into a string, use the inbuilt function str(). If you want a octal orhexadecimal representation, use the inbuilt function oct() or hex().

18)   Explain how to delete a file in Python?

By using a command os.remove (filename) or os.unlink(filename)

19)   Explain how can you generate random numbers in Python?

To generate random numbers in Python, you need to import command asimport random random.random()

20)   Mention five benefits of using Python?

• Python comprises of a huge standard library for most Internet platforms like Email, HTML,etc.
• Python does not require explicit memory management as the interpreter itself allocates thememory to new variables and free them automatically
• Provide easy readability due to use of square brackets
• Easy-to-learn for beginners
• Having the built-in data types saves programming time and effort from declaring variables

• How does inheritance work in Python?

Inheritance allows a class (subclass) to inherit attributes and methods from another class Base class an super

Subclasses can extend or override the behavior of the superclass.

 

• What is the purpose of the init    method in Python classes?

  init    

is a constructor method that initializes an object’s attributes when the object is created.