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https://issues.apache.org/jira/browse/SPARK-34629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17300901#comment-17300901
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Maciej Szymkiewicz commented on SPARK-34629:
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{quote}
Would love to help out here if I may. Does it help if I start identifying which
APIs are still missing from the hints?
{quote}
That be helpful [~chilltake]. However, please keep in mind, that certain parts
of the code are intentionally not covered. These are explicitly ignored in
[mypy.ini|https://github.com/apache/spark/blob/master/python/mypy.ini].
In general other parts should be covered as long as the code was in use in
tests or examples, so false negatives might be actually shaded by other
definitions and / or hit some deficiency of the type checker.
More likely than missing hints we'll have missing overloads (some of these log
provided by [~hyukjin.kwon] ‒ these can be tricky to handle without negative
control ‒ I am still thinking about bringing data tests from pyspark-stubs
here, which would be helpful in such cases, but there are hard to maintain).
> Python type hints improvement
> -----------------------------
>
> Key: SPARK-34629
> URL: https://issues.apache.org/jira/browse/SPARK-34629
> Project: Spark
> Issue Type: Improvement
> Components: PySpark
> Affects Versions: 3.1.2
> Reporter: Hyukjin Kwon
> Priority: Critical
>
> We added PySpark type hints at SPARK-32681
> However, looks like there are still many missing APIs to type. I maintain a
> project called [Koalas](https://github.com/databricks/koalas), and I found
> these errors
> https://gist.github.com/HyukjinKwon/9faabc5f2680b56007d71ef7cf0ad400
> For example, {{pyspark.__version__}} and {{pyspark.sql.Column.contains}} are
> missing in the type hints.
> I believe this is the same case to other projects that enables mypy in their
> project (presumably also given SPARK-34544).
> This umbrella JIRA targets to identify such cases and improve Python type
> hints in PySpark.
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