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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def open_url(url, retries=0, sleep=0.5):
    '''
    Open a mysql connection to a url.  Note that if your password has
    punctuation characters, it might break the parsing of url.

    url: A string in the form "mysql://username:password@host.domain/database"
    '''
    return open_conn(retries=retries, sleep=sleep, **parse_url(url))