Package: margin-talib-service
TA-Lib ServiceThis repository contains a service wrapper for theTA-Libpackage. It makes the TA-Lib functions accessible through the use ofRPyC.RequirementsTo use the TA-Lib service will require an installation of Python 3.5 or higher. You also need to
installTA-Lib. See the Troubleshooting section athttps://github.com/mrjbq7/ta-libfor more information.Note: It may be necessary to adapt your TA-Lib to be capable of handling values with many decimal
places.Seehttps://github.com/mrjbq7/ta-lib/issues/157#issuecomment-367329661orhttps://github.com/freqtrade/freqtrade/blob/develop/build_helpers/install_ta-lib.shfor workarounds.InstallationYou can install the TA-Lib from PyPI:pip install margin-talib-serviceOr checkout the sources and run the setup.py file:python setup.py installStarting the serviceAfter the installation of the service, it can be started as follows:margin-talib-serviceorpython -m margin_talib_serviceThe usage includes a parameter port that is set to a default value.usage: margin-talib-service [-h] [-p PORT]

Start a service that grants access to TA-Lib for margin strategies.

optional arguments:
  -h, --help            show this help message and exit
  -p PORT, --port PORT  Specify the port that the service is binding to.You may need to specify the port, if the default port is already in use. The service will
indicate this with the following error message:Creating server on port 18861
Chosen port 18861 on localhost is already in use, please specify a different port.Starting the service correctly will result in the following output:Creating server on port 18861
Starting TA-Lib service...Accessing the serviceIn your margin Python Strategy addimport rpyc
TALIB_SERVICE_PORT=18861
connection = rpyc.connect("localhost", TALIB_SERVICE_PORT)
talib = connection.root
np = talib.remote_np()to the top. For margin to find the rpyc package you will have to link or copy the package into.margin/python-packagesin your user home folder depending on your OS.If you specified a different port before when starting the service, adapt the variableTALIB_SERVICE_PORTaccordingly.You can now access all the functions of the TA-Lib through thetalibvariable:close = np.random.random(100)
result = talib.SMA(close)Note: The forwarding to the TA-Lib service only works with the forwarded numpy that is
created bynp = talib.remote_np(). Do not use a locally included numpy version for this.TroubleshootingIf your Python Strategy shows the errorTypeError: Argument 'real' has incorrect type (expected numpy.ndarray, got numpy.ndarray)you must be using a different numpy version than the TA-Lib service.
Ensure that you follow all the steps inAccessing the serviceand then
only use the remote numpy defined in the variablenpinstead of including numpy locally.LicenseThe source code is published under the MIT License:MIT LicenseCopyright (c) 2019 Margin Open SourcePermission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.