Converts string 'hh:mm:ss.ssssss' as a float

def hms_to_seconds(time_string):
    """
    Converts string 'hh:mm:ss.ssssss' as a float
    """
    s = time_string.split(':')
    hours = int(s[0])
    minutes = int(s[1])
    secs = float(s[2])
    return hours * 3600 + minutes * 60 + secs