Python Questions

It stores the return value of the method.

It refers to the class itself, allowing access to class variables.

It refers to the current instance of the class, allowing access to instance variables and methods.

It's a placeholder that doesn't have any specific purpose.

All of the above options can be used to represent a graph.

A set of tuples, where each tuple represents an edge between two nodes.

A list of lists, where each inner list represents a node and its connections.

A dictionary where keys are nodes, and values are lists of their neighbors.

datetime

sys

math

os

file

csv

data

text

'^a.*z$'

'a.+z'

'a.*z'

'^a.+z$'

endswith()

startswith()

index()

find()

math(pi)

pi

math.pi

math->pi

*args passes a list of arguments, while **kwargs passes a dictionary of arguments.

*args is used for passing arguments by value, while **kwargs is used for passing arguments by reference.

*args passes a variable number of positional arguments, while **kwargs passes a variable number of keyword arguments.

There is no difference; both *args and **kwargs can be used interchangeably.

It forces a function to return a value of a specific data type.

It allows a nested function to 'remember' and access variables from its enclosing function's scope even after the outer function has finished executing.

It allows a function to be defined inside a class.

It prevents a function from accessing global variables.

To enhance data security within a program

To enforce strict data type checking

To improve code execution speed

To reduce code duplication and promote reusability