Build python Beam from source

[Поротиков Станислав Вячеславович via dev]

Hello!
How to properly install/build apache-beam python package from source?
I've tried running:
                pip install .
from skds/python<https://github.com/apache/beam/tree/master/sdks/python> 
directory
It's installed successfully, but when I try to run python beam pipeline, it 
complains:
                RuntimeError: 
<MY_VIRTUAL_ENVIRONMENT>/lib/sdks/java/io/expansion-service/build/libs/beam-sdks-java-io-expansion-service-2.52.0-SNAPSHOT.jar
 not found. Please build the server with
                 cd <MY_VIRTUAL_ENVIRONMENT>/lib; ./gradlew 
sdks:java:io:expansion-service:shadowJar

Glad to any help!

Best regards,
Stanislav Porotikov