Ray Zhang

Allow custom hashing function in `_make_hash`

4

Hi again! As we know, `hash(x)` in python yields different values across different interpreter sessions for security. It turns out that I am using attrs in all of my class...

Allow custom lazy scanning

3

#### Describe your feature request My understanding of the polars query planner is modest at best, so please correct me if I'm (ab)using the terms used below or if I...

Support hive style partitioning of parquet file scans

3

#### Describe your feature request `pl.scan_parquet` does a great job reading the data directly, but often times parquet files are organized in a hierarchical way. Typically these are called partitions...

Deep equality of pl.Expr trees

3

#### Describe your feature request `pl.Expr`s supply a wide array of operator overloads including `__eq__` which is great syntactic sugar to construct more complicated nested predicate expressions. However, by losing...

Row-wise random sampling in LazyFrames

12

### Row-wise random sampling Suppose `lf` is a `pl.LazyFrame`, then one popular transformation on the lazy frame is to select rows with some preset probability parametrized by a bernoulli distribution...

### Right joins Currently, `pl.LazyFrame` supports the following types of joins: ``` “inner” “left” “outer” “asof”, “cross” “semi” “anti” ``` One type of join that is missing from here is...

Standalone subscripted alias expression fails mypy check

3

**Bug Report** Standalone subscripted alias expression raises the error "Type application is only supported for generic classes" **To Reproduce** Here's a reproducible playground link: https://mypy-play.net/?mypy=0.971&python=3.10&gist=e262d3dd99f2a708e96eb28338792632 Code: ``` T = TypeVar("T")...

Admin client fails to show updated topics immediately after create_topic through list_topics

2

Description =========== I'm experiencing a flaky behavior where upon `AdminClient(...).create_topics([NewTopic(topic, ...)])` and I immediately `AdminClient.list_topics(timeout=-1)`, I don't see the topic. I suspect one of the following is happening: - `create_topics`...

For beginners and library writers who work atop pypika, there is a common pattern of reusing Pypika objects for queries: ``` subquery = Query.from_(table).select(table.col1.as_("col"), table.col2) query1 = Query.from_(subquery).select(Avg(subquery.col) ... query2...

Simple reproducible: ``` xt::xarray __im2col = {{ 2., 3., 3., 4.}, { 2., 1., 3., 2.}}; xt::xarray __f = {{ 2., 3., 3.}, { 1., 4., 5.}, { 1., 3.,...