Golang encoding/json: performance regression marshaling small values for goexperiment.jsonv2

In order to fix bugs like #22967, #27722, or #33993, where the MarshalJSON method was not called on a pointer receiver, ...

Golang cmd/compile: store pairing on arm64 misses some cases

After CL 633075, this program:package maintype T struct{ a, b, c int }type TT struct{ i, j T }func f(x *TT) { x.j = T...

Golang x/net/http2: support memory re-use for MetaHeadersFrames

As pointed out in https://github.com/grpc/grpc-go/issues/1587#issuecomment-340015543 (and in https://github.com/cockroac...

Pandas BUG: describe(include=..) fails with unrelated error if provided data types are not present

Example with current main:>>> df = pd.DataFrame({"a": [1, 2, 3]})>>> df.describe(include=[&q...

Pandas BUG: Operations not implemented for non-1D ExtensionArrays

Pandas version checks[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exis...

Pandas BUG: DateOffset default temporal pattern does not work as expected with DST

Pandas version checks[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exis...

Pandas REF: share code between pd.array and Series constructor

I've noticed a couple of places in the code where we do runtime imports of Series just to do values = Series(values)._va...

Pandas DISC: remove Index and EA subclasses

There has been discussion in eg #39133 about having EA-backed Indexes held in base-class Index objects, similar discussi...

Pandas DEPR: __finalize__ and _metadata

We have some support for propagating metadata, but it is incomplete (38 xfails in tests/generic/test_finalize.py) for pl...

Pandas API/DEPR: dtype=(str|bytes) interpret as pyarrow

In 2.0 we made a lot of progress in ensuring passing dtype=foo or .astype(foo) actually returned the requested dtype rat...

Pandas API/DEPR: pd.array don't cast numpy int/float/bool arrays to nullable

We should inch towards making this match the other constructor behaviors. In particular, if you pass a numpy array with...

Pandas DEPR: Period, PeriodFoo

This was discussed a few dev calls ago, merits an issue.Now that we support non-nano TImestamp/datetime64, many of the m...

Pandas BUG: datetime parsing: error message indicating position of conflicting string is wrong for larger data

Using the latest pandas main (and also happens on released version 2.1.1):In [1]: pd.to_datetime(["2012-01-01"...

Pandas BUG: next_workday observance wrongly adds BDay to holidays on weekdays

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: pd.Arrays.SparseArray warning inconsistencies when contained in a pd.DataFrame (potential false positive)

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: AttributeError about dateutil.relativedelta when calling pd.read_json(json_data)

Pandas version checks[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exis...

Pandas BUG: pd.read_sql is incorrectly reading long int when connecting to Teradata

Pandas version checks[x] I have checked that this issue has not already been reported.[x] I have confirmed this bug exis...

Pandas API: Categorical constructor with dtype raise instead of casting to NA

dti = pd.date_range("2016-01-01", periods=3)ci = pd.Categorical(dti._values)>>> pd.Categorical([&quot...

Pandas BUG: pd.Grouper cannot be reused in some cases

[X] I have checked that this issue has not already been reported.[X] I have confirmed this bug exists on the latest vers...

Pandas BUG: DTA/TDA setitem breaks freq on views

DatetimeArray/TimedeltaArray __setitem__ resets the array's freq to None, but this doesn't propagate to views:dti = pd.d...
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