From c5e84c78f5341cfe5932fc3e2c895ce00d0fda18 Mon Sep 17 00:00:00 2001
From: Michael Buehlmann <buehlmann.michi@gmail.com>
Date: Wed, 15 Dec 2021 16:45:43 -0600
Subject: [PATCH] add basic documentation / sphinx setup
---
docs/Makefile | 20 ++
docs/_static/css/custom.css | 7 +
docs/conf.py | 99 ++++++++++
docs/index.rst | 33 ++++
docs/make.bat | 35 ++++
docs/python/class_interface.rst | 32 ++++
docs/python/mpi.rst | 2 +
docs/python/readwrite.rst | 58 ++++++
python/genericio.cpp | 325 ++++++++++++++++++++++++++++++--
9 files changed, 600 insertions(+), 11 deletions(-)
create mode 100644 docs/Makefile
create mode 100644 docs/_static/css/custom.css
create mode 100644 docs/conf.py
create mode 100644 docs/index.rst
create mode 100644 docs/make.bat
create mode 100644 docs/python/class_interface.rst
create mode 100644 docs/python/mpi.rst
create mode 100644 docs/python/readwrite.rst
diff --git a/docs/Makefile b/docs/Makefile
new file mode 100644
index 0000000..d4bb2cb
--- /dev/null
+++ b/docs/Makefile
@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS ?=
+SPHINXBUILD ?= sphinx-build
+SOURCEDIR = .
+BUILDDIR = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+ @$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+ @$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
diff --git a/docs/_static/css/custom.css b/docs/_static/css/custom.css
new file mode 100644
index 0000000..00f75f7
--- /dev/null
+++ b/docs/_static/css/custom.css
@@ -0,0 +1,7 @@
+table.full-width {
+ width: 100%;
+}
+
+table.full-width td {
+ white-space: normal !important;
+}
\ No newline at end of file
diff --git a/docs/conf.py b/docs/conf.py
new file mode 100644
index 0000000..b2991e1
--- /dev/null
+++ b/docs/conf.py
@@ -0,0 +1,99 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+import os, sys, shutil, subprocess
+import re
+from pathlib import Path
+
+DIR = Path(__file__).parent.resolve()
+
+
+# -- Project information -----------------------------------------------------
+
+project = "GenericIO"
+copyright = "2021, Hal Finkel, et al."
+author = "Hal Finkel, et al."
+
+
+# -- General configuration ---------------------------------------------------
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+ "sphinx.ext.autodoc",
+ "sphinx.ext.napoleon",
+ "sphinx.ext.autodoc.typehints",
+ "sphinx.ext.autosummary",
+ "sphinx.ext.viewcode",
+ "sphinx.ext.autosectionlabel",
+ "myst_parser",
+]
+
+autosectionlabel_prefix_document = True
+
+autodoc_typehints = "description"
+add_module_names = False
+
+autosummary_generate = False
+napoleon_numpy_docstring = True
+napoleon_use_admonition_for_examples = True
+napoleon_use_admonition_for_notes = True
+
+source_suffix = {".rst": "restructuredtext", ".md": "markdown"}
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ["_templates"]
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store", "README.md"]
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages. See the documentation for
+# a list of builtin themes.
+#
+html_theme = "sphinx_rtd_theme"
+html_theme_options = {"prev_next_buttons_location": None}
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ["_static"]
+
+
+def prepare(app):
+ with open(DIR.parent / "README.md") as f:
+ contents = f.read()
+
+ # Filter out section titles for index.rst for LaTeX
+ if app.builder.name == "latex":
+ contents = re.sub(r"^(.*)\n[-~]{3,}$", r"**\1**", contents, flags=re.MULTILINE)
+
+ with open(DIR / "README.md", "w") as f:
+ f.write(contents)
+
+
+def clean_up(app, exception):
+ (DIR / "README.md").unlink()
+
+
+def setup(app):
+ app.add_css_file("css/custom.css")
+ # Copy the readme in
+ app.connect("builder-inited", prepare)
+
+ # Clean up the generated readme
+ app.connect("build-finished", clean_up)
diff --git a/docs/index.rst b/docs/index.rst
new file mode 100644
index 0000000..d8fadfa
--- /dev/null
+++ b/docs/index.rst
@@ -0,0 +1,33 @@
+.. GenericIO documentation master file, created by
+ sphinx-quickstart on Fri Dec 10 09:52:19 2021.
+ You can adapt this file completely to your liking, but it should at least
+ contain the root `toctree` directive.
+
+.. only:: latex
+
+ GenericIO Documentation
+ =======================
+
+.. include:: README.md
+ :parser: myst_parser.sphinx_
+
+
+.. only:: latex
+
+ .. toctree::
+ :maxdepth: 2
+
+ self
+
+ .. toctree::
+ :caption: Python Interface
+ :maxdepth: 2
+
+ python/readwrite
+ python/class_interface
+ python/mpi
+
+ .. toctree::
+ :caption: C++ Interface
+ :maxdepth: 2
+
diff --git a/docs/make.bat b/docs/make.bat
new file mode 100644
index 0000000..2119f51
--- /dev/null
+++ b/docs/make.bat
@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+ set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+ echo.
+ echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+ echo.installed, then set the SPHINXBUILD environment variable to point
+ echo.to the full path of the 'sphinx-build' executable. Alternatively you
+ echo.may add the Sphinx directory to PATH.
+ echo.
+ echo.If you don't have Sphinx installed, grab it from
+ echo.http://sphinx-doc.org/
+ exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd
diff --git a/docs/python/class_interface.rst b/docs/python/class_interface.rst
new file mode 100644
index 0000000..6372b12
--- /dev/null
+++ b/docs/python/class_interface.rst
@@ -0,0 +1,32 @@
+The Python Class Interface
+==========================
+.. currentmodule:: pygio
+
+.. code-block:: python
+
+ # instantiate a GenericIO class
+ gio_file = pygio.PyGenericIO("generic_io_file")
+
+ # inspect (prints to python stdout, also works in notebook)
+ gio_file.inspect()
+
+ # get variables
+ gio_vars = gio_file.get_variables()
+
+ # print variable names
+ for var in gio_vars:
+ print(var.name, var.size, var.element_size, var.is_float)
+
+ # read data
+ data_all = gio_file.read()
+ data_partial = gio_file.read(["x", "y", "z"])
+
+Further methods and members of GenericIO can easly be interfaced by editing
+``python_new/genericio.cpp``.
+
+
+References
+----------
+
+.. autoclass:: PyGenericIO
+ :members:
\ No newline at end of file
diff --git a/docs/python/mpi.rst b/docs/python/mpi.rst
new file mode 100644
index 0000000..721b7ef
--- /dev/null
+++ b/docs/python/mpi.rst
@@ -0,0 +1,2 @@
+Using GenericIO with MPI
+========================
\ No newline at end of file
diff --git a/docs/python/readwrite.rst b/docs/python/readwrite.rst
new file mode 100644
index 0000000..409f31f
--- /dev/null
+++ b/docs/python/readwrite.rst
@@ -0,0 +1,58 @@
+Reading and Writing Data
+========================
+
+.. currentmodule:: pygio
+
+.. code-block:: python
+
+ import numpy as np
+ import pygio
+
+ # inspect file
+ pygio.inspect_genericio("generic_io_file")
+
+
+.. code-block:: python
+
+ # read all variables
+ data = pygio.read_genericio("generic_io_file")
+
+.. code-block:: python
+
+ # read only a subset of variables
+ data_partial = pygio.read_genericio("generic_io_file", ["x", "y", "z"])
+ data_x = data_partial["x"]
+
+.. code-block:: python
+
+ data = {
+ "x": np.ones(100),
+ "y": np.ones(100)
+ }
+
+ # write data to file
+ pygio.write_genericio("new_generic_io_file",
+ data,
+ phys_scale = [1, 1, 1],
+ phys_origin = [0, 0, 0]
+ )
+
+
+References
+----------
+
+.. autofunction:: inspect_genericio
+
+.. autofunction:: read_genericio
+
+.. autofunction:: read_num_elems
+
+.. autofunction:: read_variable_names
+
+.. autofunction:: read_variable_dtypes
+
+.. autofunction:: read_phys_scale
+
+.. autofunction:: read_phys_origin
+
+.. autofunction:: write_genericio
\ No newline at end of file
diff --git a/python/genericio.cpp b/python/genericio.cpp
index a2b1e0c..34aab98 100644
--- a/python/genericio.cpp
+++ b/python/genericio.cpp
@@ -65,6 +65,35 @@ public:
}
}
+ std::vector<std::string> read_variable_names() {
+ std::vector<std::string> variable_names;
+ for(const auto& v: variables) {
+ variable_names.push_back(v.Name);
+ }
+ return variable_names;
+ }
+
+ std::map<std::string, py::dtype> read_variable_dtypes() {
+ std::map<std::string, py::dtype> variable_dtypes;
+
+ for(const auto& var: variables) {
+ auto var_name = var.Name;
+ if(var.IsFloat && var.ElementSize == 4)
+ variable_dtypes[var_name] = py::dtype("f4");
+ else if(var.IsFloat && var.ElementSize == 8)
+ variable_dtypes[var_name] = py::dtype("f8");
+ else if(!var.IsFloat && var.ElementSize == 4)
+ variable_dtypes[var_name] = py::dtype("i4");
+ else if(!var.IsFloat && var.ElementSize == 8)
+ variable_dtypes[var_name] = py::dtype("i8");
+ else if(!var.IsFloat && var.ElementSize == 2)
+ variable_dtypes[var_name] = py::dtype("u2");
+ else
+ throw std::runtime_error(std::string("Unknown data type in GenericIO for variable ") + var_name);
+ }
+ return variable_dtypes;
+ }
+
std::map<std::string, py::array> read(
std::optional<std::vector<std::string>> var_names,
bool print_stats=true,
@@ -83,10 +112,7 @@ public:
// if no argument, read all
if(!var_names.has_value()) {
- var_names.emplace(std::vector<std::string>());
- for(const auto& v: variables) {
- var_names->push_back(v.Name);
- }
+ var_names.emplace(read_variable_names());
}
clearVariables();
@@ -116,6 +142,8 @@ public:
} else if(!(*varp).IsFloat && (*varp).ElementSize == 2) {
result[var_name] = py::array_t<uint16_t>(readsize);
addVariable(*varp, result[var_name].mutable_data(), gio::GenericIO::VarHasExtraSpace);
+ } else {
+ throw std::runtime_error(std::string("Unknown data type in GenericIO for variable ") + var_name);
}
}
}
@@ -133,7 +161,7 @@ public:
return result;
}
- const std::vector<gio::GenericIO::VariableInfo> &get_variables() {
+ const std::vector<VariableInfo> &get_variables() {
return variables;
}
@@ -157,7 +185,7 @@ public:
private:
int num_ranks;
- std::vector<gio::GenericIO::VariableInfo> variables;
+ std::vector<VariableInfo> variables;
};
std::map<std::string, py::array> read_genericio(
@@ -187,6 +215,60 @@ void inspect_genericio(
reader.inspect();
}
+std::array<double, 3> read_phys_scale(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.read_phys_scale();
+}
+
+std::array<double, 3> read_phys_origin(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.read_phys_origin();
+}
+
+std::vector<std::string> read_variable_names(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.read_variable_names();
+}
+
+std::map<std::string, py::dtype> read_variable_dtypes(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.read_variable_dtypes();
+}
+
+int64_t read_num_elems(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.readNumElems();
+}
+
+int64_t read_total_num_elems(
+ std::string filename,
+ PyGenericIO::FileIO method=PyGenericIO::FileIO::FileIOPOSIX,
+ PyGenericIO::MismatchBehavior redistribute=PyGenericIO::MismatchBehavior::MismatchRedistribute
+) {
+ PyGenericIO reader(filename, method, redistribute);
+ return reader.readTotalNumElems();
+}
+
#ifndef GENERICIO_NO_MPI
void write_genericio(
std::string filename,
@@ -283,8 +365,11 @@ PYBIND11_MODULE(pygio, m) {
py::arg("print_stats")=true,
py::arg("collective_stats")=true,
py::arg("eff_rank")=-1)
- .def("get_source_ranks", &PyGenericIO::get_source_ranks)
.def("read_nranks", (int (PyGenericIO::*)(void))(&PyGenericIO::readNRanks))
+ .def("read_variable_names", &PyGenericIO::read_variable_names)
+ .def("read_variable_dtypes", &PyGenericIO::read_variable_dtypes)
+ .def("read", &PyGenericIO::read, py::arg("variables")=nullptr, py::arg("print_stats")=true, py::arg("collective_stats")=true)
+ .def("get_source_ranks", &PyGenericIO::getSourceRanks)
#ifndef GENERICIO_NO_MPI
.def("rebalance_source_ranks", &PyGenericIO::rebalanceSourceRanks)
#endif
@@ -300,7 +385,42 @@ PYBIND11_MODULE(pygio, m) {
(vi.IsFloat ? "float" : "int") + " name='" + vi.Name + "'>";
});
- m.def("read_genericio", &read_genericio,
+
+ m.def("read_genericio", &read_genericio, R"Delim(
+ Read data from a GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ variables: List[str]
+ A list of variable names that should be read. If ``None``, all
+ variables contained in the file will be read
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ print_stats: bool
+ if ``True``, print throughput statistics after reading
+
+ collective_stats: bool
+ if ``True``, aggregate statistics among reading ranks (if using MPI)
+
+ rebalance_sourceranks: bool
+ if ``True``, the code will re-assign the file ranks to the reading
+ MPI ranks to equalize the data size each rank is reading. Only
+ relevant if using MPI and more ranks were used to write the file
+ than reading.
+
+ Returns
+ -------
+ data: Mapping[str, np.ndarray]
+
+ )Delim",
py::arg("filename"),
py::arg("variables")=nullptr,
py::kw_only(),
@@ -312,16 +432,199 @@ PYBIND11_MODULE(pygio, m) {
py::arg("eff_rank")=-1,
py::return_value_policy::move);
- m.def("inspect_genericio", &inspect_genericio,
+
+ m.def("inspect_genericio", &inspect_genericio, R"Delim(
+ Print a summary of variables and types defined in the GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+ m.def("read_num_elems", &read_num_elems, R"Delim(
+ Read the (local) number of objects (the number of objects that would be
+ read by this rank when calling :func:`read_genericio`)
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ nlocal: int
+ the number of objects assigned to this rank
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+ m.def("read_total_num_elems", &read_total_num_elems, R"Delim(
+ Read the total number of objects (the number of objects that would be
+ read by all ranks combined when calling :func:`read_genericio`)
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ ntotal: int
+ the total number of objects stored in the GenericIO file
+ )Delim",
py::arg("filename"),
py::kw_only(),
py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+ m.def("read_variable_names", &read_variable_names, R"Delim(
+ Get a list of variable names stored in the GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ variable_names: List[str]
+ the list of variable names defined in the GenericIO file
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+ m.def("read_variable_dtypes", &read_variable_dtypes, R"Delim(
+ Get a dictionary of dtypes mapped to the variable names
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ variable_dtypes: Mapping[str, np.dtype]
+ a map ``variable_name -> dtype`` for each variable in the GenericIO file
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+ m.def("read_phys_scale", &read_phys_scale, R"Delim(
+ Read the box size that is stored in the GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ phys_scale: List[float]
+ the box length for each dimension (3 elements long)
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+ m.def("read_phys_origin", &read_phys_scale, R"Delim(
+ Read the origin / reference point of the box that is stored in the GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+
+ redistribute: PyGenericIO.MismatchBehavior
+ whether to allow mismatching ranks
+
+ Returns
+ -------
+ phys_origin: List[float]
+ the box origin coordinates (3 elements long)
+ )Delim",
+ py::arg("filename"),
+ py::kw_only(),
+ py::arg("method")=PyGenericIO::FileIO::FileIOPOSIX,
+ py::arg("redistribute")=PyGenericIO::MismatchBehavior::MismatchRedistribute);
+
+
+
#ifndef GENERICIO_NO_MPI
- m.def("write_genericio", &write_genericio,
+ m.def("write_genericio", &write_genericio, R"Delim(
+ Write data as a GenericIO file
+
+ Parameters
+ ----------
+ filename: str
+ path to the GenericIO file
+
+ data: Mapping[str, np.ndarray]
+ a dictionary, with all items being 1-dimensional numpy arrays of
+ the same length. Currently, only float32, float64, int32, int64 and
+ uint16 data types are supported
+
+ phys_scale: List[float]
+ the physical size of the box that the data belongs to (3 elements)
+
+ phys_origin: List[float]
+ the origin coordinates of the box that the data belongs to (3 elements)
+
+ method: PyGenericIO.FileIO
+ file handling method (POSIX/MPI)
+ )Delim",
py::arg("filename"),
- py::arg("variables"),
+ py::arg("data"),
py::arg("phys_scale"),
py::arg("phys_origin") = std::array<double, 3>({0., 0., 0.}),
py::kw_only(),
--
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