'''
    DS2000
    Spring 2020
    Source code from class: finding the winner
    of the caucus
'''


def get_winner(candidates):
    ''' Function: get_winner
        Parameters: list of strings (candidate names,
                    with pct won embedded as part of the
                    same string, e.g., "warren.18.3")
        Returns: the name of the winner, a string
    '''
    winner = ""
    winning_pct = -1

    # iterate by value
    for candidate in candidates:
        pos = candidate.index(".")
        name = candidate[:pos]
        pct = float(candidate[pos + 1:])

        if pct > winning_pct:
            winning_pct = pct
            winner = name

    return (winner, winning_pct)