Python Questions

There is no difference; they are interchangeable terms.

Class variables are declared inside a method, while instance variables are declared outside methods.

Class variables are shared by all instances of a class, while instance variables are unique to each instance.

Class variables can only store integers, while instance variables can store any data type.

[num: num**2 for num in range(1, 6)]

{num**2: num for num in range(1, 6)}

{num: num**2 for num in range(1, 6)}

(num: num**2 for num in range(1, 6))

It makes the pattern case-insensitive.

It treats the pattern as a raw string, ignoring escape sequences.

It performs a greedy match.

It enables multiline matching.

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

It stores the return value of the method.

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

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

using math

require math

import math

include math

Deques can only store integers, while lists can store any data type.

Deques are immutable, while lists are mutable.

Deques are thread-safe, while lists are not.

Deques are optimized for appending and popping elements from both ends, while lists are optimized for operations at the end.

Stores the package's documentation

Defines the package's main function

Contains unit tests for the package

Marks the directory as a Python package

Command line arguments passed to the script

System error messages

Contents of the current working directory

Environment variables

Using the '%s' operator.

Using the ''.join() method.

It depends on the size of the strings.

Using the '+' operator.

positional arguments, keyword arguments, *args, **kwargs

keyword arguments, *args, positional arguments, **kwargs

**kwargs, keyword arguments, *args, positional arguments

*args, positional arguments, **kwargs, keyword arguments