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KaoruNishikawa/dataarray_force_context.py

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dataarray_force_context.py
import functools
import types
import xarray as xr
@xr.register_dataarray_accessor("accessor_name")
class Something(xr.DataArray):
__slots__ = (
"_cache",
"_coords",
"_close",
"_indexes",
"_name",
"_variable",
) # Required for subclass of xarray.DataArray.
def __init__(self, *args, **kwargs) -> None:
super().__init__(*args, **kwargs)
self.keep_attrs()
@classmethod
def keep_attrs(cls) -> None:
"""Override xarray.DataArray methods to always keep attributes.
Notes
-----
Need to be a classmethod.
"""
exclude = ["__init__"]
parent = cls.__bases__[0]
attrs = parent().__dir__()
for attr in attrs:
if attr in exclude:
continue
try:
attr_obj = getattr(parent, attr)
if isinstance(attr_obj, (types.FunctionType, types.MethodType)):
setattr(cls, attr, cls.with_keep_attrs_True(attr_obj))
except AttributeError:
continue
@staticmethod
def with_keep_attrs_True(func):
"""Make arbitrary function run with context manager."""
@functools.wraps(func)
def wrapper(*args, **kwargs):
with xr.set_options(keep_attrs=True):
return func(*args, **kwargs)
return wrapper
def to_dataarray(self):
return xr.DataArray(self)
Display the source blob
Display the rendered blob
Raw
example.ipynb
{
"cells": [
{
"cell_type": "code",
"execution_count": 1,
"source": [
"import functools\n",
"import types\n",
"\n",
"import xarray as xr\n",
"\n",
"\n",
"@xr.register_dataarray_accessor(\"accessor_name\")\n",
"class Something(xr.DataArray):\n",
" __slots__ = (\n",
" \"_cache\",\n",
" \"_coords\",\n",
" \"_close\",\n",
" \"_indexes\",\n",
" \"_name\",\n",
" \"_variable\",\n",
" ) # Required for subclass of xarray.DataArray.\n",
"\n",
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"\n",
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"\n",
" Notes\n",
" -----\n",
" Need to be a classmethod.\n",
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" exclude = [\"__init__\"]\n",
" parent = cls.__bases__[0]\n",
" attrs = parent().__dir__()\n",
" for attr in attrs:\n",
" if attr in exclude:\n",
" continue\n",
" try:\n",
" attr_obj = getattr(parent, attr)\n",
" if isinstance(attr_obj, (types.FunctionType, types.MethodType)):\n",
" setattr(cls, attr, cls.with_keep_attrs_True(attr_obj))\n",
" except AttributeError:\n",
" continue\n",
"\n",
" @staticmethod\n",
" def with_keep_attrs_True(func):\n",
" \"\"\"Make arbitrary function run with context manager.\"\"\"\n",
" @functools.wraps(func)\n",
" def wrapper(*args, **kwargs):\n",
" with xr.set_options(keep_attrs=True):\n",
" return func(*args, **kwargs)\n",
" return wrapper\n",
"\n",
" def to_dataarray(self):\n",
" return xr.DataArray(self)"
],
"outputs": [],
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 2,
"source": [
"Something([1, 2], attrs={\"abc\": 123}) + 1"
],
"outputs": [
{
"output_type": "execute_result",
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"</style><pre class='xr-text-repr-fallback'>&lt;xarray.Something (dim_0: 2)&gt;\n",
"array([2, 3])\n",
"Dimensions without coordinates: dim_0\n",
"Attributes:\n",
" abc: 123</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Something</div><div class='xr-array-name'></div><ul class='xr-dim-list'><li><span>dim_0</span>: 2</li></ul></div><ul class='xr-sections'><li class='xr-section-item'><div class='xr-array-wrap'><input id='section-5130ff87-a2ae-4837-a56b-3f7925bbbe7b' class='xr-array-in' type='checkbox' checked><label for='section-5130ff87-a2ae-4837-a56b-3f7925bbbe7b' title='Show/hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-array-preview xr-preview'><span>2 3</span></div><div class='xr-array-data'><pre>array([2, 3])</pre></div></div></li><li class='xr-section-item'><input id='section-b00dc164-5f22-4b2b-92f5-958f19971220' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-b00dc164-5f22-4b2b-92f5-958f19971220' class='xr-section-summary' title='Expand/collapse section'>Coordinates: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'></ul></div></li><li class='xr-section-item'><input id='section-31ce974a-0ef1-4e79-b7b5-f688a7f78680' class='xr-section-summary-in' type='checkbox' checked><label for='section-31ce974a-0ef1-4e79-b7b5-f688a7f78680' class='xr-section-summary' >Attributes: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>abc :</span></dt><dd>123</dd></dl></div></li></ul></div></div>"
],
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],
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" --xr-background-color: #111111;\n",
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"</style><pre class='xr-text-repr-fallback'>&lt;xarray.Something (dim_0: 2)&gt;\n",
"array([2, 3])\n",
"Dimensions without coordinates: dim_0\n",
"Attributes:\n",
" abc: 123</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.Something</div><div class='xr-array-name'></div><ul class='xr-dim-list'><li><span>dim_0</span>: 2</li></ul></div><ul class='xr-sections'><li class='xr-section-item'><div class='xr-array-wrap'><input id='section-8d9b1460-d984-484c-9db5-959be89a0b04' class='xr-array-in' type='checkbox' checked><label for='section-8d9b1460-d984-484c-9db5-959be89a0b04' title='Show/hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-array-preview xr-preview'><span>2 3</span></div><div class='xr-array-data'><pre>array([2, 3])</pre></div></div></li><li class='xr-section-item'><input id='section-958f4ebf-cf29-4072-8597-a5faf3276a2d' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-958f4ebf-cf29-4072-8597-a5faf3276a2d' class='xr-section-summary' title='Expand/collapse section'>Coordinates: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'></ul></div></li><li class='xr-section-item'><input id='section-7d97ad59-2372-41fd-acdb-44a014124ad7' class='xr-section-summary-in' type='checkbox' checked><label for='section-7d97ad59-2372-41fd-acdb-44a014124ad7' class='xr-section-summary' >Attributes: <span>(1)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'><dt><span>abc :</span></dt><dd>123</dd></dl></div></li></ul></div></div>"
],
"text/plain": [
"<xarray.Something (dim_0: 2)>\n",
"array([2, 3])\n",
"Dimensions without coordinates: dim_0\n",
"Attributes:\n",
" abc: 123"
]
},
"metadata": {},
"execution_count": 3
}
],
"metadata": {}
},
{
"cell_type": "code",
"execution_count": 4,
"source": [
"Something([1, 2], attrs={\"abc\": 123}).to_dataarray() + 1"
],
"outputs": [
{
"output_type": "execute_result",
"data": {
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" display: none;\n",
" background-color: var(--xr-background-color) !important;\n",
" padding-bottom: 5px !important;\n",
"}\n",
"\n",
".xr-var-attrs-in:checked ~ .xr-var-attrs,\n",
".xr-var-data-in:checked ~ .xr-var-data {\n",
" display: block;\n",
"}\n",
"\n",
".xr-var-data > table {\n",
" float: right;\n",
"}\n",
"\n",
".xr-var-name span,\n",
".xr-var-data,\n",
".xr-attrs {\n",
" padding-left: 25px !important;\n",
"}\n",
"\n",
".xr-attrs,\n",
".xr-var-attrs,\n",
".xr-var-data {\n",
" grid-column: 1 / -1;\n",
"}\n",
"\n",
"dl.xr-attrs {\n",
" padding: 0;\n",
" margin: 0;\n",
" display: grid;\n",
" grid-template-columns: 125px auto;\n",
"}\n",
"\n",
".xr-attrs dt,\n",
".xr-attrs dd {\n",
" padding: 0;\n",
" margin: 0;\n",
" float: left;\n",
" padding-right: 10px;\n",
" width: auto;\n",
"}\n",
"\n",
".xr-attrs dt {\n",
" font-weight: normal;\n",
" grid-column: 1;\n",
"}\n",
"\n",
".xr-attrs dt:hover span {\n",
" display: inline-block;\n",
" background: var(--xr-background-color);\n",
" padding-right: 10px;\n",
"}\n",
"\n",
".xr-attrs dd {\n",
" grid-column: 2;\n",
" white-space: pre-wrap;\n",
" word-break: break-all;\n",
"}\n",
"\n",
".xr-icon-database,\n",
".xr-icon-file-text2 {\n",
" display: inline-block;\n",
" vertical-align: middle;\n",
" width: 1em;\n",
" height: 1.5em !important;\n",
" stroke-width: 0;\n",
" stroke: currentColor;\n",
" fill: currentColor;\n",
"}\n",
"</style><pre class='xr-text-repr-fallback'>&lt;xarray.DataArray (dim_0: 2)&gt;\n",
"array([2, 3])\n",
"Dimensions without coordinates: dim_0</pre><div class='xr-wrap' hidden><div class='xr-header'><div class='xr-obj-type'>xarray.DataArray</div><div class='xr-array-name'></div><ul class='xr-dim-list'><li><span>dim_0</span>: 2</li></ul></div><ul class='xr-sections'><li class='xr-section-item'><div class='xr-array-wrap'><input id='section-6732b559-1760-4dfd-8fac-bd63d23fb258' class='xr-array-in' type='checkbox' checked><label for='section-6732b559-1760-4dfd-8fac-bd63d23fb258' title='Show/hide data repr'><svg class='icon xr-icon-database'><use xlink:href='#icon-database'></use></svg></label><div class='xr-array-preview xr-preview'><span>2 3</span></div><div class='xr-array-data'><pre>array([2, 3])</pre></div></div></li><li class='xr-section-item'><input id='section-83d2114b-ff04-4837-acc8-5a194efee9a2' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-83d2114b-ff04-4837-acc8-5a194efee9a2' class='xr-section-summary' title='Expand/collapse section'>Coordinates: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><ul class='xr-var-list'></ul></div></li><li class='xr-section-item'><input id='section-f21ba2e4-b438-486a-a13b-f8071c424638' class='xr-section-summary-in' type='checkbox' disabled ><label for='section-f21ba2e4-b438-486a-a13b-f8071c424638' class='xr-section-summary' title='Expand/collapse section'>Attributes: <span>(0)</span></label><div class='xr-section-inline-details'></div><div class='xr-section-details'><dl class='xr-attrs'></dl></div></li></ul></div></div>"
],
"text/plain": [
"<xarray.DataArray (dim_0: 2)>\n",
"array([2, 3])\n",
"Dimensions without coordinates: dim_0"
]
},
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