def _uri(self, instruments, fields, start_time=None, end_time=None, freq='day', disk_cache=1, **kwargs):
    'Get task uri, used when generating rabbitmq task in qlib_server\n\n        Parameters\n        ----------\n        instruments : list or dict\n            list/dict of instruments or dict of stockpool config\n        fields : list\n            list of feature instances\n        start_time : str\n            start of the time range\n        end_time : str\n            end of the time range\n        freq : str\n            time frequency\n        disk_cache : int\n            whether to skip(0)/use(1)/replace(2) disk_cache\n\n        '
    return DiskDatasetCache._uri(instruments, fields, start_time, end_time, freq, disk_cache)
Get task uri, used when generating rabbitmq task in qlib_server

Parameters
----------
instruments : list or dict
    list/dict of instruments or dict of stockpool config
fields : list
    list of feature instances
start_time : str
    start of the time range
end_time : str
    end of the time range
freq : str
    time frequency
disk_cache : int
    whether to skip(0)/use(1)/replace(2) disk_cache
def _uri(self, instruments, fields, start_time=None, end_time=None, freq='day', disk_cache=1, **kwargs):
    'Get task uri, used when generating rabbitmq task in qlib_server\n\n        Parameters\n        ----------\n        instruments : list or dict\n            list/dict of instruments or dict of stockpool config\n        fields : list\n            list of feature instances\n        start_time : str\n            start of the time range\n        end_time : str\n            end of the time range\n        freq : str\n            time frequency\n        disk_cache : int\n            whether to skip(0)/use(1)/replace(2) disk_cache\n\n        '
    return DiskDatasetCache._uri(instruments, fields, start_time, end_time, freq, disk_cache)