def parse_info_field(field):
    """ Parses a vcf info field in to a dictionary
    Args:
        field (str): info field from vcf
    Returns:
        Dict: {name:[val1, val2]}
    """
    d = {}
    for entry in field.split(";"):
        try:
            key, value = entry.split("=")
            d[key] = value.split(",")
        except ValueError:
            d[entry] = []
    return d