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GreenplumPython development

Requirements

tox

We use tox as the task runner. Tox can be installed with

python3 -m pip install tox

Install with brew on macOS:

brew install tox

NodeJs need to have version 12.X, otherwise Pyright can't be executed correctly. Possible scenarios:

  • Error : Cannot find module 'worker_threads'
  • Nothing happens when run Pyright

Build & Test

Lint

tox -e lint

Test

The tests will create connection to the Greenplum cluster. So the PGPORT needs to be set if it is not the default 5432:

export PGPORT=6000

Test with the default python version and a local database server:

tox -e test

To run tests against a database server in container:

python3 -m pip install tox-docker
tox -e test-container

Run a specified test case(s):

tox -e test -- -k <EXPRESSION>
# e.g.
tox -e test -- -k dataframe

VirtualEnv

The tox is based on VirtualEnv. If you need to enter a special VirtualEnv, just source the activate file in the corresponding sub directory of .tox. Like:

source .tox/test/bin/activate

Upload to PyPI

# change the version in setup.py
pip3 install twine
python3 setup.py sdist
twine upload dist/*