* [python] Add checker pd attr param and fix switch example
* Correct submit self.param to java gateway
* Fix missing parameter for switch example
* Add mechanism checker before submit to java gateway
close: #7803
* Fix mock get task code and version
* Change judge statement and add comment
* [python] Task condition missing two downstream param
We add two downstream tasks to set task condition
success and failed node
close: #7763
* Add getter and setter property condition_resulth in base task
* [python] Enhance task datax example
* Add full example for `CustomDataX.json`
* Add comment about datasource need to exists.
close: #7800
* Add missing parameter setting
* Make sure all file with `.py` extension and all file
end with "_example"
* Make sure all examples have `__doc__`
* Make sure not have duplicate process definition name
* Make sure process definition same as filename
close: #7729
After #7505 merged. we could use condition task type
but our dependent set in the wrong direction, all
the condition operators should be upstream of the
current task instead of downstream
fix: #7649
* [python] Add parameter schedule for process definition
* Rebase and fix some code style
* May schedule work on both string and datetime
* Fix flaky test
* Add comment about freeze time
* Add edge test for schedule_json with None schedule
* Fix test function name
* Fix rebase error
* [python] Add code style lint for GA
* Change github action name
* Auto change by black
* Fix flake8
* Fix broken link for pyds README.md
* Auto fix by black
* Separate GitHub workflows
* Add Black badge and CI locally in README.md
Jay Chung