Python Questions

os

math

sys

datetime

Have different data types for the same variable name

Respond to the same method call in their own specific way

Instantiate multiple times with different initial values

Access private members of each other

It optimizes dictionary lookups for faster retrieval of values.

It prevents duplicate keys from being added to a dictionary.

It allows you to create dictionaries with keys as immutable data types only.

It provides a dictionary that remembers the order in which keys were inserted.

Instance methods operate on specific instances of a class, while class methods operate on the class itself.

Instance methods are defined using the 'classmethod' decorator, while class methods use the 'staticmethod' decorator.

Class methods can access instance variables, while instance methods cannot access class variables.

There is no practical difference; both can be used interchangeably.

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

{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))

Using double quotes (")

Using triple single quotes (''') or triple double quotes (""")

Using backslash ()

Using single quotes (')

'a.*z'

'^a.*z$'

'^a.+z$'

'a.+z'

include math

require math

using math

import math

create Dog()```

Dog = new()```

Dog.new()```

my_dog = Dog()```

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

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.