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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 create_insert():
 """ Create the grammar for the 'insert' statement """

    insert = upkey("insert").setResultsName("action")

    # VALUES
    attrs = Group(delimitedList(var)).setResultsName("attrs")
    value_group = Group(Suppress("(") + delimitedList(value) + Suppress(")"))
    values = Group(delimitedList(value_group)).setResultsName("list_values")
    values_insert = Suppress("(") + attrs + Suppress(")") + upkey("values") + values

    # KEYWORDS
    keyword = Group(var + Suppress("=") + value)
    item = Group(Suppress("(") + delimitedList(keyword) + Suppress(")"))
    keyword_insert = delimitedList(item).setResultsName("map_values")

    return insert + into + table + (values_insert | keyword_insert) + Optional(throttle)