Python Iterators

What is an iterator in Python?

• A data type that can store multiple values

• An object that contains a countable number of values and can be iterated upon

• A method used to manipulate data structures

• A function that loops through iterable objects

Which method is used to get an iterator from an iterable object?

• loop()

• next()

• iter()

• get()

What does the __next__() method do?

• Initializes an iterator

• Creates a new iterable object

• Returns the current item and moves to the next item

• Checks if an object is iterable

How can you stop an iteration in Python?

• Using the StopIteration statement

• By removing all elements from the iterable

• Using the break keyword inside the loop

• Setting the iterator to None

Which objects are considered iterable in Python?

• Only lists and tuples

• Only instances of classes that implement the __iter__ method

• Only dictionaries

• Lists, tuples, dictionaries, and sets

What is required to create an iterator in Python?

• Only the __iter__() method

• Only the __next__() method

• Both the __iter__() and __next__() methods

• A special iterator declaration statement

What does the __iter__() method return?

• The next item in the sequence

• The iterator object itself

• The entire iterable object

• A new instance of the iterable class

How can you iterate through an iterable object using a loop?

• It's not possible to iterate using loops

• By manually managing the iterator with next()

• Using a for loop

• Using a while loop only

What happens if you call the next() method on an iterator with no more items?

• It exits the program

• It returns None

• It starts iterating from the beginning

• It raises a StopIteration error

Which of the following is true about the for loop in Python?

• It creates an iterator object and executes the next() method for each loop

• It requires manual incrementation of the iterator

• It cannot be used with iterable objects

• It only works with numeric ranges