api_base.py 文件源码

def get_previous_trading_date(date):
    """
    ?????????????

    :param date: ????
    :type date: `str` | `date` | `datetime` | `pandas.Timestamp`

    :return: `datetime.date`

    :example:

    ..  code-block:: python3
        :linenos:

        [In]get_previous_trading_date(date='2016-05-02')
        [Out]
        [datetime.date(2016, 4, 29)]
    """
    return ExecutionContext.data_proxy.get_previous_trading_date(date)