Make Dask and Distributed optional dependencies #1061
Merged
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Addresses #1060.
Dask was de facto optional already (see the guarded import in
tsfresh/feature_extraction/data.py
), but before this PR it was installed by default.Distributed is imported only to support Dask, when the classes
ClusterDaskDistribution
orLocalDaskDistribution
are used, so it is not needed if Dask is not imported.To install tsfresh with those dependencies, one can do:
This is needed, for example, to run the test suite.The documentation has been updated accordingly.