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Language/Type: Python assertions

For each of the points labeled by comments, identify each of the assertions in the table below as either being always true, never true, or sometimes true / sometimes false.

def mystery():
    prev = 0
    count = 0
    next = int(input("Type a number: "))
    # Point A
    while next != 0:
        # Point B
        if next == prev:
            # Point C
            count += 1
        prev = next
        next = int(input("Type a number: "))
        # Point D
    # Point E
    return count
next == 0 prev == 0 next == prev
Point A
Point B
Point C
Point D
Point E

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