master
[SPARK-36997][PYTHON][TESTS] Run mypy tests against ml, sql, streaming and core examples
[SPARK-32138] Drop Python 2.7, 3.4 and 3.5
[SPARK-37836][PYTHON][INFRA] Enable F841, E722, E305 and E226 for PEP 8 compliance
[SPARK-38424][PYTHON] Warn unused casts and ignores
[SPARK-32714][PYTHON] Initial pyspark-stubs port
[SPARK-23248][PYTHON][EXAMPLES] Relocate module docstrings to the top in PySpark examples
[SPARK-55355][PYTHON] Upgrade mypy version to the latest
[SPARK-25997][ML] add Python example code for Power Iteration Clustering in spark.ml
[SPARK-24207][R] add R API for PrefixSpan
[SPARK-37178][ML] Add Target Encoding to ml.feature
[MINOR][GRAPHX] Correct typos in the sub-modules: graphx, external, and examples
[SPARK-34080][ML][PYTHON] Add UnivariateFeatureSelector