pyup-bot
commented
2 months ago Closing this in favor of #2361
Closed pyup-bot closed 2 months ago
pyup-bot
commented
2 months ago Closing this in favor of #2361
Update pandas from 0.24.2 to 2.2.2.
The bot wasn't able to find a changelog for this release. Got an idea?
Links
- PyPI: https://pypi.org/project/pandas - Homepage: https://pandas.pydata.orgUpdate numpy from 1.16.2 to 2.0.1.
Changelog
### 2.0.1 ``` discovered after the 2.0.0 release. NumPy 2.0.1 is the last planned release in the 2.0.x series, 2.1.0rc1 should be out shortly. The Python versions supported by this release are 3.9-3.12. **_NOTE:_** Do not use the GitHub generated "Source code" files listed in the "Assets", they are garbage. Improvements `np.quantile` with method `closest_observation` chooses nearest even order statistic This changes the definition of nearest for border cases from the nearest odd order statistic to nearest even order statistic. The numpy implementation now matches other reference implementations. ([gh-26656](https://github.com/numpy/numpy/pull/26656)) Contributors A total of 15 people contributed to this release. People with a \"+\" by their names contributed a patch for the first time. - \vahidmech + - Alex Herbert + - Charles Harris - Giovanni Del Monte + - Leo Singer - Lysandros Nikolaou - Matti Picus - Nathan Goldbaum - Patrick J. Roddy + - Raghuveer Devulapalli - Ralf Gommers - Rostan Tabet + - Sebastian Berg - Tyler Reddy - Yannik Wicke + Pull requests merged A total of 24 pull requests were merged for this release. - [26711](https://github.com/numpy/numpy/pull/26711): MAINT: prepare 2.0.x for further development - [26792](https://github.com/numpy/numpy/pull/26792): TYP: fix incorrect import in `ma/extras.pyi` stub - [26793](https://github.com/numpy/numpy/pull/26793): DOC: Mention \'1.25\' legacy printing mode in `set_printoptions` - [26794](https://github.com/numpy/numpy/pull/26794): DOC: Remove mention of NaN and NAN aliases from constants - [26821](https://github.com/numpy/numpy/pull/26821): BLD: Fix x86-simd-sort build failure on openBSD - [26822](https://github.com/numpy/numpy/pull/26822): BUG: Ensure output order follows input in numpy.fft - [26823](https://github.com/numpy/numpy/pull/26823): TYP: fix missing sys import in numeric.pyi - [26832](https://github.com/numpy/numpy/pull/26832): DOC: remove hack to override \_add_newdocs_scalars - [26835](https://github.com/numpy/numpy/pull/26835): BUG: avoid side-effect of \'include complex.h\' - [26836](https://github.com/numpy/numpy/pull/26836): BUG: fix max_rows and chunked string/datetime reading in `loadtxt` - [26837](https://github.com/numpy/numpy/pull/26837): BUG: fix PyArray_ImportNumPyAPI under -Werror=strict-prototypes - [26856](https://github.com/numpy/numpy/pull/26856): DOC: Update some documentation - [26868](https://github.com/numpy/numpy/pull/26868): BUG: fancy indexing copy - [26869](https://github.com/numpy/numpy/pull/26869): BUG: Mismatched allocation domains in `PyArray_FillWithScalar` - [26870](https://github.com/numpy/numpy/pull/26870): BUG: Handle \--f77flags and \--f90flags for meson \[wheel build\] - [26887](https://github.com/numpy/numpy/pull/26887): BUG: Fix new DTypes and new string promotion when signature is\... - [26888](https://github.com/numpy/numpy/pull/26888): BUG: remove numpy.f2py from excludedimports - [26959](https://github.com/numpy/numpy/pull/26959): BUG: Quantile closest_observation to round to nearest even order - [26960](https://github.com/numpy/numpy/pull/26960): BUG: Fix off-by-one error in amount of characters in strip - [26961](https://github.com/numpy/numpy/pull/26961): API: Partially revert unique with return_inverse - [26962](https://github.com/numpy/numpy/pull/26962): BUG,MAINT: Fix utf-8 character stripping memory access - [26963](https://github.com/numpy/numpy/pull/26963): BUG: Fix out-of-bound minimum offset for in1d table method - [26971](https://github.com/numpy/numpy/pull/26971): BUG: fix f2py tests to work with v2 API - [26995](https://github.com/numpy/numpy/pull/26995): BUG: Add object cast to avoid warning with limited API Checksums MD5 a3e7d0f361ee7302448cae3c10844dd3 numpy-2.0.1-cp310-cp310-macosx_10_9_x86_64.whl cff8546b69e43ae7b5050f05bdc25df2 numpy-2.0.1-cp310-cp310-macosx_11_0_arm64.whl 1713d23342528f4f8f4027970f010068 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`NPY_SIGINT_ON` have been removed. We recommend querying `PyErr_CheckSignals()` or `PyOS_InterruptOccurred()` periodically (these do currently require holding the GIL though). - The `noprefix.h` header has been removed. Replace missing symbols with their prefixed counterparts (usually an added `NPY_` or `npy_`). ([gh-23919](https://github.com/numpy/numpy/pull/23919)) - `PyUFunc_GetPyVals`, `PyUFunc_handlefperr`, and `PyUFunc_checkfperr` have been removed. If needed, a new backwards compatible function to raise floating point errors could be restored. Reason for removal: there are no known users and the functions would have made `with np.errstate()` fixes much more difficult). ([gh-23922](https://github.com/numpy/numpy/pull/23922)) - The `numpy/old_defines.h` which was part of the API deprecated since NumPy 1.7 has been removed. This removes macros of the form `PyArray_CONSTANT`. The [replace_old_macros.sed](https://github.com/numpy/numpy/blob/main/tools/replace_old_macros.sed) script may be useful to convert them to the `NPY_CONSTANT` version. ([gh-24011](https://github.com/numpy/numpy/pull/24011)) - The `legacy_inner_loop_selector` member of the ufunc struct is removed to simplify improvements to the dispatching system. There are no known users overriding or directly accessing this member. ([gh-24271](https://github.com/numpy/numpy/pull/24271)) - `NPY_INTPLTR` has been removed to avoid confusion (see `intp` redefinition). ([gh-24888](https://github.com/numpy/numpy/pull/24888)) - The advanced indexing `MapIter` and related API has been removed. The (truly) public part of it was not well tested and had only one known user (Theano). Making it private will simplify improvements to speed up `ufunc.at`, make advanced indexing more maintainable, and was important for increasing the maximum number of dimensions of arrays to 64. Please let us know if this API is important to you so we can find a solution together. ([gh-25138](https://github.com/numpy/numpy/pull/25138)) - The `NPY_MAX_ELSIZE` macro has been removed, as it only ever reflected builtin numeric types and served no internal purpose. ([gh-25149](https://github.com/numpy/numpy/pull/25149)) - `PyArray_REFCNT` and `NPY_REFCOUNT` are removed. Use `Py_REFCNT` instead. ([gh-25156](https://github.com/numpy/numpy/pull/25156)) - `PyArrayFlags_Type` and `PyArray_NewFlagsObject` as well as `PyArrayFlagsObject` are private now. There is no known use-case; use the Python API if needed. - `PyArray_MoveInto`, `PyArray_CastTo`, `PyArray_CastAnyTo` are removed use `PyArray_CopyInto` and if absolutely needed `PyArray_CopyAnyInto` (the latter does a flat copy). - `PyArray_FillObjectArray` is removed, its only true use was for implementing `np.empty`. Create a new empty array or use `PyArray_FillWithScalar()` (decrefs existing objects). - `PyArray_CompareUCS4` and `PyArray_CompareString` are removed. Use the standard C string comparison functions. - `PyArray_ISPYTHON` is removed as it is misleading, has no known use-cases, and is easy to replace. - `PyArray_FieldNames` is removed, as it is unclear what it would be useful for. It also has incorrect semantics in some possible use-cases. - `PyArray_TypestrConvert` is removed, since it seems a misnomer and unlikely to be used by anyone. If you know the size or are limited to few types, just use it explicitly, otherwise go via Python strings. ([gh-25292](https://github.com/numpy/numpy/pull/25292)) - `PyDataType_GetDatetimeMetaData` is removed, it did not actually do anything since at least NumPy 1.7. ([gh-25802](https://github.com/numpy/numpy/pull/25802)) - `PyArray_GetCastFunc` is removed. Note that custom legacy user dtypes can still provide a castfunc as their implementation, but any access to them is now removed. The reason for this is that NumPy never used these internally for many years. If you use simple numeric types, please just use C casts directly. In case you require an alternative, please let us know so we can create new API such as `PyArray_CastBuffer()` which could use old or new cast functions depending on the NumPy version. ([gh-25161](https://github.com/numpy/numpy/pull/25161)) New Features `np.add` was extended to work with `unicode` and `bytes` dtypes. > ([gh-24858](https://github.com/numpy/numpy/pull/24858)) A new `bitwise_count` function This new function counts the number of 1-bits in a number. `numpy.bitwise_count` works on all the numpy integer types and integer-like objects. python >>> a = np.array([2**i - 1 for i in range(16)]) >>> np.bitwise_count(a) array([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], dtype=uint8) ([gh-19355](https://github.com/numpy/numpy/pull/19355)) macOS Accelerate support, including the ILP64 Support for the updated Accelerate BLAS/LAPACK library, including ILP64 (64-bit integer) support, in macOS 13.3 has been added. This brings arm64 support, and significant performance improvements of up to 10x for commonly used linear algebra operations. When Accelerate is selected at build time, or if no explicit BLAS library selection is done, the 13.3+ version will automatically be used if available. ([gh-24053](https://github.com/numpy/numpy/pull/24053)) Binary wheels are also available. On macOS \>=14.0, users who install NumPy from PyPI will get wheels built against Accelerate rather than OpenBLAS. ([gh-25255](https://github.com/numpy/numpy/pull/25255)) Option to use weights for quantile and percentile functions A `weights` keyword is now available for `numpy.quantile`, `numpy.percentile`, `numpy.nanquantile` and `numpy.nanpercentile`. Only `method="inverted_cdf"` supports weights. ([gh-24254](https://github.com/numpy/numpy/pull/24254)) Improved CPU optimization tracking A new tracer mechanism is available which enables tracking of the enabled targets for each optimized function (i.e., that uses hardware-specific SIMD instructions) in the NumPy library. With this enhancement, it becomes possible to precisely monitor the enabled CPU dispatch targets for the dispatched functions. A new function named `opt_func_info` has been added to the new namespace `numpy.lib.introspect`, offering this tracing capability. This function allows you to retrieve information about the enabled targets based on function names and data type signatures. ([gh-24420](https://github.com/numpy/numpy/pull/24420)) A new Meson backend for `f2py` `f2py` in compile mode (i.e. `f2py -c`) now accepts the `--backend meson` option. This is the default option for Python \>=3.12. For older Python versions, `f2py` will still default to `--backend distutils`. To support this in realistic use-cases, in compile mode `f2py` takes a `--dep` flag one or many times which maps to `dependency()` calls in the `meson` backend, and does nothing in the `distutils` backend. There are no changes for users of `f2py` only as a code generator, i.e. without `-c`. ([gh-24532](https://github.com/numpy/numpy/pull/24532)) `bind(c)` support for `f2py` Both functions and subroutines can be annotated with `bind(c)`. `f2py` will handle both the correct type mapping, and preserve the unique label for other C interfaces. **Note:** `bind(c, name = 'routine_name_other_than_fortran_routine')` is not honored by the `f2py` bindings by design, since `bind(c)` with the `name` is meant to guarantee only the same name in C and Fortran, not in Python and Fortran. ([gh-24555](https://github.com/numpy/numpy/pull/24555)) A new `strict` option for several testing functions The `strict` keyword is now available for `numpy.testing.assert_allclose`, `numpy.testing.assert_equal`, and `numpy.testing.assert_array_less`. Setting `strict=True` will disable the broadcasting behaviour for scalars and ensure that input arrays have the same data type. ([gh-24680](https://github.com/numpy/numpy/pull/24680), [gh-24770](https://github.com/numpy/numpy/pull/24770), [gh-24775](https://github.com/numpy/numpy/pull/24775)) Add `np.core.umath.find` and `np.core.umath.rfind` UFuncs Add two `find` and `rfind` UFuncs that operate on unicode or byte strings and are used in `np.char`. They operate similar to `str.find` and `str.rfind`. ([gh-24868](https://github.com/numpy/numpy/pull/24868)) `diagonal` and `trace` for `numpy.linalg` `numpy.linalg.diagonal` and `numpy.linalg.trace` have been added, which are array API standard-compatible variants of `numpy.diagonal` and `numpy.trace`. They differ in the default axis selection which define 2-D sub-arrays. ([gh-24887](https://github.com/numpy/numpy/pull/24887)) New `long` and `ulong` dtypes `numpy.long` and `numpy.ulong` have been added as NumPy integers mapping to C\'s `long` and `unsigned long`. Prior to NumPy 1.24, `numpy.long` was an alias to Python\'s `int`. ([gh-24922](https://github.com/numpy/numpy/pull/24922)) `svdvals` for `numpy.linalg` `numpy.linalg.svdvals` has been added. It computes singular values for (a stack of) matrices. Executing `np.svdvals(x)` is the same as calling `np.svd(x, compute_uv=False, hermitian=False)`. This function is compatible with the array API standard. ([gh-24940](https://github.com/numpy/numpy/pull/24940)) A new `isdtype` function `numpy.isdtype` was added to provide a canonical way to classify NumPy\'s dtypes in compliance with the array API standard. ([gh-25054](https://github.com/numpy/numpy/pull/25054)) A new `astype` function `numpy.astype` was added to provide an array API standard-compatible alternative to the `numpy.ndarray.astype` method. ([gh-25079](https://github.com/numpy/numpy/pull/25079)) Array API compatible functions\' aliases 13 aliases for existing functions were added to improve compatibility with the array API standard: - Trigonometry: `acos`, `acosh`, `asin`, `asinh`, `atan`, `atanh`, `atan2`. - Bitwise: `bitwise_left_shift`, `bitwise_invert`, `bitwise_right_shift`. - Misc: `concat`, `permute_dims`, `pow`. - In `numpy.linalg`: `tensordot`, `matmul`. ([gh-25086](https://github.com/numpy/numpy/pull/25086)) New `unique_*` functions The `numpy.unique_all`, `numpy.unique_counts`, `numpy.unique_inverse`, and `numpy.unique_values` functions have been added. They provide functionality of `numpy.unique` with different sets of flags. They are array API standard-compatible, and because the number of arrays they return does not depend on the values of input arguments, they are easier to target for JIT compilation. ([gh-25088](https://github.com/numpy/numpy/pull/25088)) Matrix transpose support for ndarrays NumPy now offers support for calculating the matrix transpose of an array (or stack of arrays). The matrix transpose is equivalent to swapping the last two axes of an array. Both `np.ndarray` and `np.ma.MaskedArray` now expose a `.mT` attribute, and there is a matching new `numpy.matrix_transpose` function. ([gh-23762](https://github.com/numpy/numpy/pull/23762)) Array API compatible functions for `numpy.linalg` Six new functions and two aliases were added to improve compatibility with the Array API standard for \`numpy.linalg\`: - `numpy.linalg.matrix_norm` - Computes the matrix norm of a matrix (or a stack of matrices). - `numpy.linalg.vector_norm` - Computes the vector norm of a vector (or batch of vectors). - `numpy.vecdot` - Computes the (vector) dot product of two arrays. - `numpy.linalg.vecdot` - An alias for `numpy.vecdot`. - `numpy.linalg.matrix_transpose` - An alias for `numpy.matrix_transpose`. ([gh-25155](https://github.com/numpy/numpy/pull/25155)) - `numpy.linalg.outer` has been added. It computes the outer product of two vectors. It differs from `numpy.outer` by accepting one-dimensional arrays only. This function is compatible with the array API standard. ([gh-25101](https://github.com/numpy/numpy/pull/25101)) - `numpy.linalg.cross` has been added. It computes the cross product of two (arrays of) 3-dimensional vectors. It differs from `numpy.cross` by accepting three-dimensional vectors only. This function is compatible with the array API standard. ([gh-25145](https://github.com/numpy/numpy/pull/25145)) A `correction` argument for `var` and `std` A `correction` argument was added to `numpy.var` and `numpy.std`, which is an array API standard compatible alternative to `ddof`. As both arguments serve a similar purpose, only one of them can be provided at the same time. ([gh-25169](https://github.com/numpy/numpy/pull/25169)) `ndarray.device` and `ndarray.to_device` An `ndarray.device` attribute and `ndarray.to_device` method were added to `numpy.ndarray` for array API standard compatibility. Additionally, `device` keyword-only arguments were added to: `numpy.asarray`, `numpy.arange`, `numpy.empty`, `numpy.empty_like`, `numpy.eye`, `numpy.full`, `numpy.full_like`, `numpy.linspace`, `numpy.ones`, `numpy.ones_like`, `numpy.zeros`, and `numpy.zeros_like`. For all these new arguments, only `device="cpu"` is supported. ([gh-25233](https://github.com/numpy/numpy/pull/25233)) StringDType has been added to NumPy We have added a new variable-width UTF-8 encoded string data type, implementing a \"NumPy array of Python strings\", including support for a user-provided missing data sentinel. It is intended as a drop-in replacement for arrays of Python strings and missing data sentinels using the object dtype. See [NEP 55](https://numpy.org/neps/nep-0055-string_dtype.html) and the documentation of stringdtype for more details. ([gh-25347](https://github.com/numpy/numpy/pull/25347)) New keywords for `cholesky` and `pinv` The `upper` and `rtol` keywords were added to `numpy.linalg.cholesky` and `numpy.linalg.pinv`, respectively, to improve array API standard compatibility. For `numpy.linalg.pinv`, if neither `rcond` nor `rtol` is specified, the `rcond`\'s default is used. We plan to deprecate and remove `rcond` in the future. ([gh-25388](https://github.com/numpy/numpy/pull/25388)) New keywords for `sort`, `argsort` and `linalg.matrix_rank` New keyword parameters were added to improve array API standard compatibility: - `rtol` was added to `numpy.linalg.matrix_rank`. - `stable` was added to `numpy.sort` and `numpy.argsort`. ([gh-25437](https://github.com/numpy/numpy/pull/25437)) New `numpy.strings` namespace for string ufuncs NumPy now implements some string operations as ufuncs. The old `np.char` namespace is still available, and where possible the string manipulation functions in that namespace have been updated to use the new ufuncs, substantially improving their performance. Where possible, we suggest updating code to use functions in `np.strings` instead of `np.char`. In the future we may deprecate `np.char` in favor of `np.strings`. ([gh-25463](https://github.com/numpy/numpy/pull/25463)) `numpy.fft` support for different precisions and in-place calculations The various FFT routines in `numpy.fft` now do their calculations natively in float, double, or long double precision, depending on the input precision, instead of always calculating in double precision. Hence, the calculation will now be less precise for single and more precise for long double precision. The data type of the output array will now be adjusted accordingly. Furthermore, all FFT routines have gained an `out` argument that can be used for in-place calculations. ([gh-25536](https://github.com/numpy/numpy/pull/25536)) configtool and pkg-config support A new `numpy-config` CLI script is available that can be queried for the NumPy version and for compile flags needed to use the NumPy C API. This will allow build systems to better support the use of NumPy as a dependency. Also, a `numpy.pc` pkg-config file is now included with Numpy. In order to find its location for use with `PKG_CONFIG_PATH`, use `numpy-config --pkgconfigdir`. ([gh-25730](https://github.com/numpy/numpy/pull/25730)) Array API standard support in the main namespace The main `numpy` namespace now supports the array API standard. See `array-api-standard-compatibility` for details. ([gh-25911](https://github.com/numpy/numpy/pull/25911)) Improvements Strings are now supported by `any`, `all`, and the logical ufuncs. > ([gh-25651](https://github.com/numpy/numpy/pull/25651)) Integer sequences as the shape argument for `memmap` `numpy.memmap` can now be created with any integer sequence as the `shape` argument, such as a list or numpy array of integers. Previously, only the types of tuple and int could be used without raising an error. ([gh-23729](https://github.com/numpy/numpy/pull/23729)) `errstate` is now faster and context safe The `numpy.errstate` context manager/decorator is now faster and safer. Previously, it was not context safe and had (rare) issues with thread-safety. ([gh-23936](https://github.com/numpy/numpy/pull/23936)) AArch64 quicksort speed improved by using Highway\'s VQSort The first introduction of the Google Highway library, using VQSort on AArch64. Execution time is improved by up to 16x in some cases, see the PR for benchmark results. Extensions to other platforms will be done in the future. ([gh-24018](https://github.com/numpy/numpy/pull/24018)) Complex types - underlying C type changes - The underlying C types for all of NumPy\'s complex types have been changed to use C99 complex types. - While this change does not affect the memory layout of complex types, it changes the API to be used to directly retrieve or write the real or complex part of the complex number, since direct field access (as in `c.real` or `c.imag`) is no longer an option. You can now use utilities provided in `numpy/npy_math.h` to do these operations, like this: c npy_cdouble c; npy_csetreal(&c, 1.0); npy_csetimag(&c, 0.0); printf("%d + %di\n", npy_creal(c), npy_cimag(c)); - To ease cross-version compatibility, equivalent macros and a compatibility layer have been added which can be used by downstream packages to continue to support both NumPy 1.x and 2.x. See `complex-numbers` for more info. - `numpy/npy_common.h` now includes `complex.h`, which means that `complex` is now a reserved keyword. ([gh-24085](https://github.com/numpy/numpy/pull/24085)) `iso_c_binding` support and improved common blocks for `f2py` Previously, users would have to define their own custom `f2cmap` file to use type mappings defined by the Fortran2003 `iso_c_binding` intrinsic module. These type maps are now natively supported by `f2py` ([gh-24555](https://github.com/numpy/numpy/pull/24555)) `f2py` now handles `common` blocks which have `kind` specifications from modules. This further expands the usability of intrinsics like `iso_fortran_env` and `iso_c_binding`. ([gh-25186](https://github.com/numpy/numpy/pull/25186)) Call `str` automatically on third argument to functions like `assert_equal` The third argument to functions like `numpy.testing.assert_equal` now has `str` called on it automatically. This way it mimics the built-in `assert` statement, where `assert_equal(a, b, obj)` works like `assert a == b, obj`. ([gh-24877](https://github.com/numpy/numpy/pull/24877)) Support for array-like `atol`/`rtol` in `isclose`, `allclose` The keywords `atol` and `rtol` in `numpy.isclose` and `numpy.allclose` now accept both scalars and arrays. An array, if given, must broadcast to the shapes of the first two array arguments. ([gh-24878](https://github.com/numpy/numpy/pull/24878)) Consistent failure messages in test functions Previously, some `numpy.testing` assertions printed messages that referred to the actual and desired results as `x` and `y`. Now, these values are consistently referred to as `ACTUAL` and `DESIRED`. ([gh-24931](https://github.com/numpy/numpy/pull/24931)) n-D FFT transforms allow `s[i] == -1` The `numpy.fft.fftn`, `numpy.fft.ifftn`, `numpy.fft.rfftn`, `numpy.fft.irfftn`, `numpy.fft.fft2`, `numpy.fft.ifft2`, `numpy.fft.rfft2` and `numpy.fft.irfft2` functions now use the whole input array along the axis `i` if `s[i] == -1`, in line with the array API standard. ([gh-25495](https://github.com/numpy/numpy/pull/25495)) Guard PyArrayScalar_VAL and PyUnicodeScalarObject for the limited API `PyUnicodeScalarObject` holds a `PyUnicodeObject`, which is not available when using `Py_LIMITED_API`. Add guards to hide it and consequently also make the `PyArrayScalar_VAL` macro hidden. ([gh-25531](https://github.com/numpy/numpy/pull/25531)) Changes - `np.gradient()` now returns a tuple rather than a list making the return value immutable. ([gh-23861](https://github.com/numpy/numpy/pull/23861)) - Being fully context and thread-safe, `np.errstate` can only be entered once now. - `np.setbufsize` is now tied to `np.errstate()`: leaving an `np.errstate` context will also reset the `bufsize`. ([gh-23936](https://github.com/numpy/numpy/pull/23936)) - A new public `np.lib.array_utils` submodule has been introduced and it currently contains three functions: `byte_bounds` (moved from `np.lib.utils`), `normalize_axis_tuple` and `normalize_axis_index`. ([gh-24540](https://github.com/numpy/numpy/pull/24540)) - Introduce `numpy.bool` as the new canonical name for NumPy\'s boolean dtype, and make `numpy.bool\_` an alias to it. Note that until NumPy 1.24, `np.bool` was an alias to Python\'s builtin `bool`. The new name helps with array API standard compatibility and is a more intuitive name. ([gh-25080](https://github.com/numpy/numpy/pull/25080)) - The `dtype.flags` value was previously stored as a signed integer. This means that the aligned dtype struct flag lead to negative flags being set (-128 rather than 128). This flag is now stored unsigned (positive). Code which checks flags manually may need to adapt. This may include code compiled with Cython 0.29.x. ([gh-25816](https://github.com/numpy/numpy/pull/25816)) Representation of NumPy scalars changed As per NEP 51, the scalar representation has been updated to include the type information to avoid confusion with Python scalars. Scalars are now printed as `np.float64(3.0)` rather than just `3.0`. This may disrupt workflows that store representations of numbers (e.g., to files) making it harder to read them. They should be stored as explicit strings, for example by using `str()` or `f"{scalar!s}"`. For the time being, affected users can use `np.set_printoptions(legacy="1.25")` to get the old behavior (with possibly a few exceptions). Documentation of downstream projects may require larger updates, if code snippets are tested. We are working on tooling for [doctest-plus](https://github.com/scientific-python/pytest-doctestplus/issues/107) to facilitate updates. ([gh-22449](https://github.com/numpy/numpy/pull/22449)) Truthiness of NumPy strings changed NumPy strings previously were inconsistent about how they defined if the string is `True` or `False` and the definition did not match the one used by Python. Strings are now considered `True` when they are non-empty and `False` when they are empty. This changes the following distinct cases: - Casts from string to boolean were previously roughly equivalent to `string_array.astype(np.int64).astype(bool)`, meaning that only valid integers could be cast. Now a string of `"0"` will be considered `True` since it is not empty. If you need the old behavior, you may use the above step (casting to integer first) or `string_array == "0"` (if the input is only ever `0` or `1`). To get the new result on old NumPy versions use `string_array != ""`. - `np.nonzero(string_array)` previously ignored whitespace so that a string only containing whitespace was considered `False`. Whitespace is now considered `True`. This change does not affect `np.loadtxt`, `np.fromstring`, or `np.genfromtxt`. The first two still use the integer definition, while `genfromtxt` continues to match for `"true"` (ignoring case). However, if `np.bool_` is used as a converter the result will change. The change does affect `np.fromregex` as it uses direct assignments. ([gh-23871](https://github.com/numpy/numpy/pull/23871)) A `mean` keyword was added to var and std function Often when the standard deviation is needed the mean is also needed. The same holds for the variance and the mean. Until now the mean is then calculated twice, the change introduced here for the `numpy.var` and `numpy.std` functions allows for passing in a precalculated mean as an keyword argument. See the docstrings for details and an example illustrating the speed-up. ([gh-24126](https://github.com/numpy/numpy/pull/24126)) Remove datetime64 deprecation warning when constructing with timezone The `numpy.datetime64` method now issues a UserWarning rather than a DeprecationWarning whenever a timezone is included in the datetime string that is provided. ([gh-24193](https://github.com/numpy/numpy/pull/24193)) Default integer dtype is now 64-bit on 64-bit Windows The default NumPy integer is now 64-bit on all 64-bit systems as the historic 32-bit default on Windows was a common source of issues. Most users should not notice this. The main issues may occur with code interfacing with libraries written in a compiled language like C. For more information see `migration_windows_int64`. ([gh-24224](https://github.com/numpy/numpy/pull/24224)) Renamed `numpy.core` to `numpy._core` Accessing `numpy.core` now emits a DeprecationWarning. In practice we have found that most downstream usage of `numpy.core` was to access functionality that is available in the main `numpy` namespace. If for some reason you are using functionality in `numpy.core` that is not available in the main `numpy` namespace, this means you are likely using private NumPy internals. You can still access these internals via `numpy._core` without a deprecation warning but we do not provide any backward compatibility guarantees for NumPy internals. Please open an issue if you think a mistake was made and something needs to be made public. ([gh-24634](https://github.com/numpy/numpy/pull/24634)) The \"relaxed strides\" debug build option, which was previously enabled through the `NPY_RELAXED_STRIDES_DEBUG` environment variable or the `-Drelaxed-strides-debug` config-settings flag has been removed. ([gh-24717](https://github.com/numpy/numpy/pull/24717)) Redefinition of `np.intp`/`np.uintp` (almost never a change) Due to the actual use of these types almost always matching the use of `size_t`/`Py_ssize_t` this is now the definition in C. Previously, it matched `intptr_t` and `uintptr_t` which would often have been subtly incorrect. This has no effect on the vast majority of machines since the size of these types only differ on extremely niche platforms. However, it means that: - Pointers may not necessarily fit into an `intp` typed array anymore. The `p` and `P` character codes can still be used, however. - Creating `intptr_t` or `uintptr_t` typed arrays in C remains possible in a cross-platform way via `PyArray_DescrFromType('p')`. - The new character codes `nN` were introduced. - It is now correct to use the Python C-API functions when parsing to `npy_intp` typed arguments. ([gh-24888](https://github.com/numpy/numpy/pull/24888)) `numpy.fft.helper` made private `numpy.fft.helper` was renamed to `numpy.fft._helper` to indicate that it is a private submodule. All public functions exported by it should be accessed from `numpy.fft`. ([gh-24945](https://github.com/numpy/numpy/pull/24945)) `numpy.linalg.linalg` made private `numpy.linalg.linalg` was renamed to `numpy.linalg._linalg` to indicate that it is a private submodule. All public functions exported by it should be accessed from `numpy.linalg`. ([gh-24946](https://github.com/numpy/numpy/pull/24946)) Out-of-bound axis not the same as `axis=None` In some cases `axis=32` or for concatenate any large value was the same as `axis=None`. Except for `concatenate` this was deprecate. Any out of bound axis value will now error, make sure to use `axis=None`. ([gh-25149](https://github.com/numpy/numpy/pull/25149)) New `copy` keyword meaning for `array` and `asarray` constructors Now `numpy.array` and `numpy.asarray` support three values for `copy` parameter: - `None` - A copy will only be made if it is necessary. - `True` - Always make a copy. - `False` - Never make a copy. If a copy is required a `ValueError` is raised. The meaning of `False` changed as it now raises an exception if a copy is needed. ([gh-25168](https://github.com/numpy/numpy/pull/25168)) The `__array__` special method now takes a `copy` keyword argument. NumPy will pass `copy` to the `__array__` special method in situations where it would be set to a non-default value (e.g. in a call to `np.asarray(some_object, copy=False)`). Currently, if an unexpected keyword argument error is raised after this, NumPy will print a warning and re-try without the `copy` keyword argument. Implementations of objects implementing the `__array__` protocol should accept a `copy` keyword argument with the same meaning as when passed to `numpy.array` or `numpy.asarray`. ([gh-25168](https://github.com/numpy/numpy/pull/25168)) Cleanup of initialization of `numpy.dtype` with strings with commas The interpretation of strings with commas is changed slightly, in that a trailing comma will now always create a structured dtype. E.g., where previously `np.dtype("i")` and `np.dtype("i,")` were treated as identical, now `np.dtype("i,")` will create a structured dtype, with a single field. This is analogous to `np.dtype("i,i")` creating a structured dtype with two fields, and makes the behaviour consistent with that expected of tuples. At the same time, the use of single number surrounded by parenthesis to indicate a sub-array shape, like in `np.dtype("(2)i,")`, is deprecated. Instead; one should use `np.dtype("(2,)i")` or `np.dtype("2i")`. Eventually, using a number in parentheses will raise an exception, like is the case for initializations without a comma, like `np.dtype("(2)i")`. ([gh-25434](https://github.com/numpy/numpy/pull/25434)) Change in how complex sign is calculated Following the array API standard, the complex sign is now calculated as `z / |z|` (instead of the rather less logical case where the sign of the real part was taken, unless the real part was zero, in which case the sign of the imaginary part was returned). Like for real numbers, zero is returned if `z==0`. ([gh-25441](https://github.com/numpy/numpy/pull/25441)) Return types of functions that returned a list of arrays Functions that returned a list of ndarrays have been changed to return a tuple of ndarrays instead. Returning tuples consistently whenever a sequence of arrays is returned makes it easier for JIT compilers like Numba, as well as for static type checkers in some cases, to support these functions. Changed functions are: `numpy.atleast_1d`, `numpy.atleast_2d`, `numpy.atleast_3d`, `numpy.broadcast_arrays`, `numpy.meshgrid`, `numpy.ogrid`, `numpy.histogramdd`. `np.unique` `return_inverse` shape for multi-dimensional inputs When multi-dimensional inputs are passed to `np.unique` with `return_inverse=True`, the `unique_inverse` output is now shaped such that the input can be reconstructed directly using `np.take(unique, unique_inverse)` when `axis=None`, and `np.take_along_axis(unique, unique_inverse, axis=axis)` otherwise. ([gh-25553](https://github.com/numpy/numpy/pull/24126), [gh-25570](https://github.com/numpy/numpy/pull/25570)) `any` and `all` return booleans for object arrays The `any` and `all` functions and methods now return booleans also for object arrays. Previously, they did a reduction which behaved like the Python `or` and `and` operators which evaluates to one of the arguments. You can use `np.logical_or.reduce` and `np.logical_and.reduce` to achieve the previous behavior. 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Removed ambiguity when broadcasting in `np.solve` The broadcasting rules for `np.solve(a, b)` were ambiguous when `b` had 1 fewer dimensions than `a`. This has been resolved in a backward-incompatible way and is now compliant with the Array API. The old behaviour can be reconstructed by using `np.solve(a, b[..., None])[..., 0]`. ([gh-25914](https://github.com/numpy/numpy/pull/25914)) Modified representation for `Polynomial` The representation method for `numpy.polynomial.polynomial.Polynomial` was updated to include the domain in the representation. The plain text and latex representations are now consistent. For example the output of `str(np.polynomial.Polynomial([1, 1], domain=[.1, .2]))` used to be `1.0 + 1.0 x`, but now is `1.0 + 1.0 (-3.0000000000000004 + 20.0 x)`. ([gh-21760](https://github.com/numpy/numpy/pull/21760)) C API changes - The `PyArray_CGT`, `PyArray_CLT`, `PyArray_CGE`, `PyArray_CLE`, `PyArray_CEQ`, `PyArray_CNE` macros have been removed. - `PyArray_MIN` and `PyArray_MAX` have been moved from `ndarraytypes.h` to `npy_math.h`. ([gh-24258](https://github.com/numpy/numpy/pull/24258)) - A C API for working with `numpy.dtypes.StringDType` arrays has been exposed. This includes functions for acquiring and releasing mutexes which lock access to the string data, as well as packing and unpacking UTF-8 bytestreams from array entries. - `NPY_NTYPES` has been renamed to `NPY_NTYPES_LEGACY` as it does not include new NumPy built-in DTypes. In particular the new string DType will likely not work correctly with code that handles legacy DTypes. ([gh-25347](https://github.com/numpy/numpy/pull/25347)) - The C-API now only exports the static inline function versions of the array accessors (previously this depended on using \"deprecated API\"). While we discourage it, the struct fields can still be used directly. ([gh-25789](https://github.com/numpy/numpy/pull/25789)) - NumPy now defines `PyArray_Pack` to set an individual memory address. Unlike `PyArray_SETITEM` this function is equivalent to setting an individual array item and does not require a NumPy array input. ([gh-25954](https://github.com/numpy/numpy/pull/25954)) - The `->f` slot has been removed from `PyArray_Descr`. If you use this slot, replace accessing it with `PyDataType_GetArrFuncs` (see its documentation and the `numpy-2-migration-guide`). In some cases using other functions like `PyArray_GETITEM` may be an alternatives. - `PyArray_GETITEM` and `PyArray_SETITEM` now require the import of the NumPy API table to be used and are no longer defined in `ndarraytypes.h`. ([gh-25812](https://github.com/numpy/numpy/pull/25812)) - Due to runtime dependencies, the definition for functionality accessing the dtype flags was moved from `numpy/ndarraytypes.h` and is only available after including `numpy/ndarrayobject.h` as it requires `import_array()`. This includes `PyDataType_FLAGCHK`, `PyDataType_REFCHK` and `NPY_BEGIN_THREADS_DESCR`. - The dtype flags on `PyArray_Descr` must now be accessed through the `PyDataType_FLAGS` inline function to be compatible with both 1.x and 2.x. This function is defined in `npy_2_compat.h` to allow backporting. Most or all users should use `PyDataType_FLAGCHK` which is available on 1.x and does not require backporting. Cython users should use Cython 3. Otherwise access will go through Python unless they use `PyDataType_FLAGCHK` instead. ([gh-25816](https://github.com/numpy/numpy/pull/25816)) Datetime functionality exposed in the C API and Cython bindings The functions `NpyDatetime_ConvertDatetime64ToDatetimeStruct`, `NpyDatetime_ConvertDatetimeStructToDatetime64`, `NpyDatetime_ConvertPyDateTimeToDatetimeStruct`, `NpyDatetime_GetDatetimeISO8601StrLen`, `NpyDatetime_MakeISO8601Datetime`, and `NpyDatetime_ParseISO8601Datetime` have been added to the C API to facilitate converting between strings, Python datetimes, and NumPy datetimes in external libraries. ([gh-21199](https://github.com/numpy/numpy/pull/21199)) Const correctness for the generalized ufunc C API The NumPy C API\'s functions for constructing generalized ufuncs (`PyUFunc_FromFuncAndData`, `PyUFunc_FromFuncAndDataAndSignature`, `PyUFunc_FromFuncAndDataAndSignatureAndIdentity`) take `types` and `data` arguments that are not modified by NumPy\'s internals. Like the `name` and `doc` arguments, third-party Python extension modules are likely to supply these arguments from static constants. The `types` and `data` arguments are now const-correct: they are declared as `const char *types` and `void *const *data`, respectively. C code should not be affected, but C++ code may be. ([gh-23847](https://github.com/numpy/numpy/pull/23847)) Larger `NPY_MAXDIMS` and `NPY_MAXARGS`, `NPY_RAVEL_AXIS` introduced `NPY_MAXDIMS` is now 64, you may want to review its use. This is usually used in a stack allocation, where the increase should be safe. However, we do encourage generally to remove any use of `NPY_MAXDIMS` and `NPY_MAXARGS` to eventually allow removing the constraint completely. For the conversion helper and C-API functions mirroring Python ones such as `take`, `NPY_MAXDIMS` was used to mean `axis=None`. Such usage must be replaced with `NPY_RAVEL_AXIS`. See also `migration_maxdims`. ([gh-25149](https://github.com/numpy/numpy/pull/25149)) `NPY_MAXARGS` not constant and `PyArrayMultiIterObject` size change Since `NPY_MAXARGS` was increased, it is now a runtime constant and not compile-time constant anymore. We expect almost no users to notice this. But if used for stack allocations it now must be replaced with a custom constant using `NPY_MAXARGS` as an additional runtime check. The `sizeof(PyArrayMultiIterObject)` no longer includes the full size of the object. We expect nobody to notice this change. It was necessary to avoid issues with Cython. ([gh-25271](https://github.com/numpy/numpy/pull/25271)) Required changes for custom legacy user dtypes In order to improve our DTypes it is unfortunately necessary to break the ABI, which requires some changes for dtypes registered with `PyArray_RegisterDataType`. Please see the documentation of `PyArray_RegisterDataType` for how to adapt your code and achieve compatibility with both 1.x and 2.x. ([gh-25792](https://github.com/numpy/numpy/pull/25792)) New Public DType API The C implementation of the NEP 42 DType API is now public. While the DType API has shipped in NumPy for a few versions, it was only usable in sessions with a special environment variable set. It is now possible to write custom DTypes outside of NumPy using the new DType API and the normal `import_array()` mechanism for importing the numpy C API. See `dtype-api` for more details about the API. As always with a new feature, please report any bugs you run into implementing or using a new DType. It is likely that downstream C code that works with dtypes will need to be updated to work correctly with new DTypes. ([gh-25754](https://github.com/numpy/numpy/pull/25754)) New C-API import functions We have now added `PyArray_ImportNumPyAPI` and `PyUFunc_ImportUFuncAPI` as static inline functions to import the NumPy C-API tables. The new functions have two advantages over `import_array` and `import_ufunc`: - They check whether the import was already performed and are light-weight if not, allowing to add them judiciously (although this is not preferable in most cases). - The old mechanisms were macros rather than functions which included a `return` statement. The `PyArray_ImportNumPyAPI()` function is included in `npy_2_compat.h` for simpler backporting. ([gh-25866](https://github.com/numpy/numpy/pull/25866)) Structured dtype information access through functions The dtype structures fields `c_metadata`, `names`, `fields`, and `subarray` must now be accessed through new functions following the same names, such as `PyDataType_NAMES`. Direct access of the fields is not valid as they do not exist for all `PyArray_Descr` instances. The `metadata` field is kept, but the macro version should also be preferred. ([gh-25802](https://github.com/numpy/numpy/pull/25802)) Descriptor `elsize` and `alignment` access Unless compiling only with NumPy 2 support, the `elsize` and `aligment` fields must now be accessed via `PyDataType_ELSIZE`, `PyDataType_SET_ELSIZE`, and `PyDataType_ALIGNMENT`. In cases where the descriptor is attached to an array, we advise using `PyArray_ITEMSIZE` as it exists on all NumPy versions. Please see `migration_c_descr` for more information. ([gh-25943](https://github.com/numpy/numpy/pull/25943)) ``` ### 2.0.0rc1 ``` avoid problems for their users.** The Python versions supported by this release are 3.9-3.12. NumPy 2.0 Python API removals - `np.geterrobj`, `np.seterrobj` and the related ufunc keyword argument `extobj=` have been removed. The preferred replacement for all of these is using the context manager `with np.errstate():`. ([gh-23922](https://github.com/numpy/numpy/pull/23922)) - `np.cast` has b