# otp.ShowEpList ### *class* ShowEpList(, level_of_detail='per_ep', show_documentation=False, symbol=None, tick_type=None, start=utils.adaptive, end=utils.adaptive, query_parameters=None, \*\*kwargs) Bases: [`Source`](https://docs.pip.distribution.sol.onetick.com/api/source/root.html.md#onetick.py.Source) Shows available event processors from all tick servers accessible from the process (it could be a client process, or could be a tick server, depending on where a queried symbol resides) where the query containing this event processor is executed. * **Parameters:** * **level_of_detail** ([*str*](https://docs.pip.distribution.sol.onetick.com/api/operation/str/root.html.md#onetick.py.Operation.str)) -- Specifies the level of detail to show. Supported values are `per_ep_parameter` and `per_ep` (default). * **show_documentation** ([*bool*](https://docs.python.org/3/builtins/functions.html#bool)) -- When set to True, field **DESCRIPTION** will be added, with the contents of the documentation for this EP saved in it. Can only be set to True if `level_of_detail` is `per_ep`. Default value is False. * **symbol** ([*str*](https://docs.pip.distribution.sol.onetick.com/api/operation/str/root.html.md#onetick.py.Operation.str)) -- Bound symbol on the node of the graph. Not set by default -- the value from [`otp.run`](https://docs.pip.distribution.sol.onetick.com/api/run.html.md#onetick.py.run) will be used. * **tick_type** ([*str*](https://docs.pip.distribution.sol.onetick.com/api/operation/str/root.html.md#onetick.py.Operation.str)) -- Tick type set on the node of the graph. Not set by default. * **start** ([`datetime.datetime`](https://docs.python.org/3/library/datetime.html#datetime.datetime), [`otp.datetime`](https://docs.pip.distribution.sol.onetick.com/api/datetime/dt.html.md#onetick.py.datetime)) -- Time interval from which the data should be taken. Not set by default -- the values from [`otp.run`](https://docs.pip.distribution.sol.onetick.com/api/run.html.md#onetick.py.run) will be used. * **end** ([`datetime.datetime`](https://docs.python.org/3/library/datetime.html#datetime.datetime), [`otp.datetime`](https://docs.pip.distribution.sol.onetick.com/api/datetime/dt.html.md#onetick.py.datetime)) -- Time interval from which the data should be taken. Not set by default -- the values from [`otp.run`](https://docs.pip.distribution.sol.onetick.com/api/run.html.md#onetick.py.run) will be used. * **query_parameters** ([`otp.QueryParameters`](https://docs.pip.distribution.sol.onetick.com/api/misc/query_parameters.html.md#onetick.py.QueryParameters)) -- Additional query properties to be set in the resulting .otq file. They will be used if they are not overridden by other parameters or in [`otp.run`](https://docs.pip.distribution.sol.onetick.com/api/run.html.md#onetick.py.run). ### Examples Get the list of all OneTick event processors: ```pycon >>> data = otp.ShowEpList() >>> otp.run(data, symbols='LOCAL::') Time EVENT_PROCESSOR_NAME CATEGORY IS_SOURCE ORIGIN ... 0 2003-12-01 ACCESS_INFO Other 1 BUILT_IN ... 1 2003-12-01 OB_VWAP Aggregation 0 BUILT_IN ... 2 2003-12-01 ADD_FIELD Transformer 0 BUILT_IN ... 3 2003-12-01 ADD_FIELDS Transformer 0 BUILT_IN ... 4 2003-12-01 ADD_FIELDS_FROM_SYMBOL_PARAMS Transformer 0 BUILT_IN ... .. ... ... ... ... ... ... ``` Get the list of all parameters of all OneTick event processors: ```pycon >>> data = otp.ShowEpList(level_of_detail='per_ep_parameter') >>> otp.run(data, symbols='LOCAL::') Time EVENT_PROCESSOR_NAME EP_CATEGORY ... HAS_PARAMETERS PARAMETER_NAME ... 0 2003-12-01 ACCESS_INFO Other ... true INFO_TYPE ... 1 2003-12-01 ACCESS_INFO Other ... true DEEP_SCAN ... 2 2003-12-01 ACCESS_INFO Other ... true SHOW_FOR_ALL_USERS ... 3 2003-12-01 OB_VWAP Aggregation ... true BUCKET_INTERVAL ... 4 2003-12-01 OB_VWAP Aggregation ... true BUCKET_INTERVAL_UNITS ... ... ... ... ... ... ... ... ... ```