How do you turn a function into a generator in Python? Which list method removes an element?

In Python, a function becomes a generator when it contains the keyword yield. When the function is called, it returns a generator object that can be iterated over; each time the generator’s __next__() method is called, execution runs until the next yield statement, returning the yielded value. Example:

def count_up_to(n):
    i = 0
    while i < n:
        yield i
        i += 1

Calling count_up_to(5) gives a generator that yields 0,1,2,3,4.

To remove an element from a list, you can use list.remove(value) which removes the first occurrence of the specified value, or list.pop(index) which removes and returns the element at the given index. Both operations have O(n) time complexity because they may need to shift elements.

remove() is used when you know the value, while pop() is used when you know the position.