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DIST scikit-learn-1.3.2.gh.tar.gz 7650823 BLAKE2B 170699917f46d6d3f4b9ebc314bc1ec45687dad0a4aec5d2cee6e288b5dbe508bad6dd80406501f289a33593c6482067393e9dc28155f85a4872a34523bf4199 SHA512 a3799e9b39b755a50ba225f836904a378f7d83a08274c614d0485e4d4d4a7b0c7adba2dbb6612f2ccb4e5167f872214a2853eff69d767dc70f52369bda7a230b
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From eb85684feb0505694e66365ba9f4d10a409f8f0b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?J=C3=A9r=C3=A9mie=20du=20Boisberranger?=
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<34657725+jeremiedbb@users.noreply.github.com>
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Date: Wed, 11 Oct 2023 11:43:47 +0200
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Subject: [PATCH] MAINT Follow cython performance hints (#27521)
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---
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.../_middle_term_computer.pyx.tp | 2 +-
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.../preprocessing/_csr_polynomial_expansion.pyx | 2 +-
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sklearn/tree/_splitter.pyx | 2 +-
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sklearn/tree/_utils.pxd | 2 +-
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sklearn/tree/_utils.pyx | 14 ++++++--------
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5 files changed, 10 insertions(+), 12 deletions(-)
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diff --git a/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp b/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
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index f2d89ed65909c..bfe465394c4d2 100644
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--- a/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
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+++ b/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
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@@ -82,7 +82,7 @@ cdef void _middle_term_sparse_dense_{{name_suffix}}(
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intp_t Y_end,
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bint c_ordered_middle_term,
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float64_t * dist_middle_terms,
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-) nogil:
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+) noexcept nogil:
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# This routine assumes that dist_middle_terms is a pointer to the first element
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# of a buffer filled with zeros of length at least equal to n_X × n_Y, conceptually
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# representing a 2-d C-ordered of F-ordered array.
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diff --git a/sklearn/preprocessing/_csr_polynomial_expansion.pyx b/sklearn/preprocessing/_csr_polynomial_expansion.pyx
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index 90f81c0399a6e..017af83f035b2 100644
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--- a/sklearn/preprocessing/_csr_polynomial_expansion.pyx
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+++ b/sklearn/preprocessing/_csr_polynomial_expansion.pyx
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@@ -166,7 +166,7 @@ cpdef void _csr_polynomial_expansion(
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INDEX_B_t[:] result_indptr, # OUT
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FLAG_t interaction_only,
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FLAG_t degree
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-) nogil:
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+):
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"""
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Perform a second or third degree polynomial or interaction expansion on a
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compressed sparse row (CSR) matrix. The method used only takes products of
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diff --git a/sklearn/tree/_splitter.pyx b/sklearn/tree/_splitter.pyx
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index a9d3a169ec84a..81cd61ed22631 100644
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--- a/sklearn/tree/_splitter.pyx
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+++ b/sklearn/tree/_splitter.pyx
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@@ -263,7 +263,7 @@ cdef inline void shift_missing_values_to_left_if_required(
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SplitRecord* best,
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intp_t[::1] samples,
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intp_t end,
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-) nogil:
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+) noexcept nogil:
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cdef intp_t i, p, current_end
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# The partitioner partitions the data such that the missing values are in
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# samples[-n_missing:] for the criterion to consume. If the missing values
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diff --git a/sklearn/tree/_utils.pxd b/sklearn/tree/_utils.pxd
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index 4167230bfbf4d..b59d18879ca94 100644
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--- a/sklearn/tree/_utils.pxd
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+++ b/sklearn/tree/_utils.pxd
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@@ -39,7 +39,7 @@ ctypedef fused realloc_ptr:
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(Cell*)
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(Node**)
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-cdef realloc_ptr safe_realloc(realloc_ptr* p, size_t nelems) except * nogil
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+cdef int safe_realloc(realloc_ptr* p, size_t nelems) except -1 nogil
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cdef cnp.ndarray sizet_ptr_to_ndarray(intp_t* data, intp_t size)
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diff --git a/sklearn/tree/_utils.pyx b/sklearn/tree/_utils.pyx
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index 3c0c312b25fbe..b6115d4f21d18 100644
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--- a/sklearn/tree/_utils.pyx
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+++ b/sklearn/tree/_utils.pyx
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@@ -22,22 +22,20 @@ from ..utils._random cimport our_rand_r
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# Helper functions
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# =============================================================================
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-cdef realloc_ptr safe_realloc(realloc_ptr* p, size_t nelems) except * nogil:
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+cdef int safe_realloc(realloc_ptr* p, size_t nelems) except -1 nogil:
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# sizeof(realloc_ptr[0]) would be more like idiomatic C, but causes Cython
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# 0.20.1 to crash.
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cdef size_t nbytes = nelems * sizeof(p[0][0])
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if nbytes / sizeof(p[0][0]) != nelems:
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# Overflow in the multiplication
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- with gil:
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- raise MemoryError("could not allocate (%d * %d) bytes"
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- % (nelems, sizeof(p[0][0])))
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+ raise MemoryError(f"could not allocate ({nelems} * {sizeof(p[0][0])}) bytes")
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+
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cdef realloc_ptr tmp = <realloc_ptr>realloc(p[0], nbytes)
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if tmp == NULL:
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- with gil:
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- raise MemoryError("could not allocate %d bytes" % nbytes)
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+ raise MemoryError(f"could not allocate {nbytes} bytes")
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p[0] = tmp
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- return tmp # for convenience
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+ return 0
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def _realloc_test():
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@@ -111,7 +109,7 @@ cdef class WeightedPQueue:
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or 0 otherwise.
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"""
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self.array_ptr = 0
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- # Since safe_realloc can raise MemoryError, use `except *`
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+ # Since safe_realloc can raise MemoryError, use `except -1`
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safe_realloc(&self.array_, self.capacity)
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return 0
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@ -1,69 +0,0 @@
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# Copyright 2020-2023 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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EAPI=8
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DISTUTILS_EXT=1
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DISTUTILS_USE_PEP517=setuptools
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PYTHON_COMPAT=( python3_{10..11} )
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inherit distutils-r1
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DESCRIPTION="Machine learning library for Python"
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HOMEPAGE="https://scikit-learn.org/stable/"
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SRC_URI="https://github.com/scikit-learn/scikit-learn/archive/${PV}.tar.gz -> ${P}.gh.tar.gz"
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LICENSE="BSD"
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SLOT="0"
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KEYWORDS="~amd64 ~arm64 ~ppc64 ~riscv ~x86 ~arm64-macos ~x64-macos"
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IUSE="examples"
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# Fatal Python error: Segmentation fault
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RESTRICT="test"
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DEPEND="
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virtual/blas:=
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virtual/cblas:=
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"
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RDEPEND="
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${DEPEND}
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dev-python/wheel[${PYTHON_USEDEP}]
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dev-python/joblib[${PYTHON_USEDEP}]
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dev-python/numpy[${PYTHON_USEDEP}]
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dev-python/scipy[${PYTHON_USEDEP}]
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dev-python/threadpoolctl[${PYTHON_USEDEP}]
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"
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# <cython-3: https://bugs.gentoo.org/911369
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BDEPEND="
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dev-python/cython[${PYTHON_USEDEP}]
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"
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PATCHES=(
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"${FILESDIR}/210550007e04a096e0e600c6586da677c33d6d90.patch"
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"${FILESDIR}/eb85684feb0505694e66365ba9f4d10a409f8f0b.patch"
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)
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distutils_enable_tests pytest
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# For some reason this wants to use urllib to fetch things from the internet
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# distutils_enable_sphinx doc \
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# dev-python/matplotlib \
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# dev-python/memory-profiler \
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# dev-python/numpydoc \
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# dev-python/pandas \
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# dev-python/pillow \
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# dev-python/seaborn \
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# dev-python/sphinx-gallery \
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# dev-python/sphinx-prompt \
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# sci-libs/scikit-image
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python_test() {
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# This needs to be run in the install dir
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cd "${WORKDIR}/${P}-${EPYTHON//./_}/install/usr/lib/${EPYTHON}/site-packages/sklearn" || die
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distutils-r1_python_test
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}
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python_install_all() {
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find "${S}" -name \*LICENSE.txt -delete || die
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distutils-r1_python_install_all
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use examples && dodoc -r examples
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}
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