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| <h1>Source code for pyspark.pandas.extensions</h1><div class="highlight"><pre> |
| <span></span><span class="c1">#</span> |
| <span class="c1"># Licensed to the Apache Software Foundation (ASF) under one or more</span> |
| <span class="c1"># contributor license agreements. See the NOTICE file distributed with</span> |
| <span class="c1"># this work for additional information regarding copyright ownership.</span> |
| <span class="c1"># The ASF licenses this file to You under the Apache License, Version 2.0</span> |
| <span class="c1"># (the "License"); you may not use this file except in compliance with</span> |
| <span class="c1"># the License. You may obtain a copy of the License at</span> |
| <span class="c1">#</span> |
| <span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="c1">#</span> |
| <span class="c1"># Unless required by applicable law or agreed to in writing, software</span> |
| <span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="c1"># See the License for the specific language governing permissions and</span> |
| <span class="c1"># limitations under the License.</span> |
| <span class="c1">#</span> |
| <span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">Callable</span><span class="p">,</span> <span class="n">Generic</span><span class="p">,</span> <span class="n">Optional</span><span class="p">,</span> <span class="n">Type</span><span class="p">,</span> <span class="n">Union</span><span class="p">,</span> <span class="n">TYPE_CHECKING</span> |
| <span class="kn">import</span> <span class="nn">warnings</span> |
| |
| <span class="kn">from</span> <span class="nn">pyspark.pandas._typing</span> <span class="kn">import</span> <span class="n">T</span> |
| |
| <span class="k">if</span> <span class="n">TYPE_CHECKING</span><span class="p">:</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas.frame</span> <span class="kn">import</span> <span class="n">DataFrame</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas.indexes</span> <span class="kn">import</span> <span class="n">Index</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas.series</span> <span class="kn">import</span> <span class="n">Series</span> |
| |
| |
| <span class="k">class</span> <span class="nc">CachedAccessor</span><span class="p">(</span><span class="n">Generic</span><span class="p">[</span><span class="n">T</span><span class="p">]):</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Custom property-like object.</span> |
| |
| <span class="sd"> A descriptor for caching accessors:</span> |
| |
| <span class="sd"> Parameters</span> |
| <span class="sd"> ----------</span> |
| <span class="sd"> name : str</span> |
| <span class="sd"> Namespace that accessor methods, properties, etc will be accessed under, e.g. "foo" for a</span> |
| <span class="sd"> dataframe accessor yields the accessor ``df.foo``</span> |
| <span class="sd"> accessor: cls</span> |
| <span class="sd"> Class with the extension methods.</span> |
| |
| <span class="sd"> Notes</span> |
| <span class="sd"> -----</span> |
| <span class="sd"> For accessor, the class's __init__ method assumes that you are registering an accessor for one</span> |
| <span class="sd"> of ``Series``, ``DataFrame``, or ``Index``.</span> |
| |
| <span class="sd"> This object is not meant to be instantiated directly. Instead, use register_dataframe_accessor,</span> |
| <span class="sd"> register_series_accessor, or register_index_accessor.</span> |
| |
| <span class="sd"> The pandas-on-Spark accessor is modified based on pandas.core.accessor.</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">accessor</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_name</span> <span class="o">=</span> <span class="n">name</span> |
| <span class="bp">self</span><span class="o">.</span><span class="n">_accessor</span> <span class="o">=</span> <span class="n">accessor</span> |
| |
| <span class="k">def</span> <span class="fm">__get__</span><span class="p">(</span> |
| <span class="bp">self</span><span class="p">,</span> <span class="n">obj</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Union</span><span class="p">[</span><span class="s2">"DataFrame"</span><span class="p">,</span> <span class="s2">"Series"</span><span class="p">,</span> <span class="s2">"Index"</span><span class="p">]],</span> <span class="bp">cls</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="n">Union</span><span class="p">[</span><span class="n">T</span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]]:</span> |
| <span class="k">if</span> <span class="n">obj</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> |
| <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_accessor</span> |
| <span class="n">accessor_obj</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_accessor</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span> <span class="c1"># type: ignore[call-arg]</span> |
| <span class="nb">object</span><span class="o">.</span><span class="fm">__setattr__</span><span class="p">(</span><span class="n">obj</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_name</span><span class="p">,</span> <span class="n">accessor_obj</span><span class="p">)</span> |
| <span class="k">return</span> <span class="n">accessor_obj</span> |
| |
| |
| <span class="k">def</span> <span class="nf">_register_accessor</span><span class="p">(</span> |
| <span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="bp">cls</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="n">Type</span><span class="p">[</span><span class="s2">"DataFrame"</span><span class="p">],</span> <span class="n">Type</span><span class="p">[</span><span class="s2">"Series"</span><span class="p">],</span> <span class="n">Type</span><span class="p">[</span><span class="s2">"Index"</span><span class="p">]]</span> |
| <span class="p">)</span> <span class="o">-></span> <span class="n">Callable</span><span class="p">[[</span><span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]],</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]]:</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Register a custom accessor on {klass} objects.</span> |
| |
| <span class="sd"> Parameters</span> |
| <span class="sd"> ----------</span> |
| <span class="sd"> name : str</span> |
| <span class="sd"> Name under which the accessor should be registered. A warning is issued if this name</span> |
| <span class="sd"> conflicts with a preexisting attribute.</span> |
| |
| <span class="sd"> Returns</span> |
| <span class="sd"> -------</span> |
| <span class="sd"> callable</span> |
| <span class="sd"> A class decorator.</span> |
| |
| <span class="sd"> See Also</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> register_dataframe_accessor: Register a custom accessor on DataFrame objects</span> |
| <span class="sd"> register_series_accessor: Register a custom accessor on Series objects</span> |
| <span class="sd"> register_index_accessor: Register a custom accessor on Index objects</span> |
| |
| <span class="sd"> Notes</span> |
| <span class="sd"> -----</span> |
| <span class="sd"> When accessed, your accessor will be initialized with the pandas-on-Spark object the user</span> |
| <span class="sd"> is interacting with. The code signature must be:</span> |
| |
| <span class="sd"> .. code-block:: python</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> # constructor logic</span> |
| <span class="sd"> ...</span> |
| |
| <span class="sd"> In the pandas API, if data passed to your accessor has an incorrect dtype, it's recommended to</span> |
| <span class="sd"> raise an ``AttributeError`` for consistency purposes. In pandas-on-Spark, ``ValueError`` is more</span> |
| <span class="sd"> frequently used to annotate when a value's datatype is unexpected for a given method/function.</span> |
| |
| <span class="sd"> Ultimately, you can structure this however you like, but pandas-on-Spark would likely do</span> |
| <span class="sd"> something like this:</span> |
| |
| <span class="sd"> >>> ps.Series(['a', 'b']).dt</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> Traceback (most recent call last):</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> ValueError: Cannot call DatetimeMethods on type StringType()</span> |
| |
| <span class="sd"> Note: This function is not meant to be used directly - instead, use register_dataframe_accessor,</span> |
| <span class="sd"> register_series_accessor, or register_index_accessor.</span> |
| <span class="sd"> """</span> |
| |
| <span class="k">def</span> <span class="nf">decorator</span><span class="p">(</span><span class="n">accessor</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">])</span> <span class="o">-></span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]:</span> |
| <span class="k">if</span> <span class="nb">hasattr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> |
| <span class="n">msg</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="s2">"registration of accessor </span><span class="si">{0}</span><span class="s2"> under name '</span><span class="si">{1}</span><span class="s2">' for type </span><span class="si">{2}</span><span class="s2"> is overriding "</span> |
| <span class="s2">"a preexisting attribute with the same name."</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">accessor</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="bp">cls</span><span class="o">.</span><span class="vm">__name__</span><span class="p">)</span> |
| <span class="p">)</span> |
| |
| <span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span> |
| <span class="n">msg</span><span class="p">,</span> |
| <span class="ne">UserWarning</span><span class="p">,</span> |
| <span class="n">stacklevel</span><span class="o">=</span><span class="mi">2</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="nb">setattr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">CachedAccessor</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">accessor</span><span class="p">))</span> |
| <span class="k">return</span> <span class="n">accessor</span> |
| |
| <span class="k">return</span> <span class="n">decorator</span> |
| |
| |
| <div class="viewcode-block" id="register_dataframe_accessor"><a class="viewcode-back" href="../../../reference/pyspark.pandas/api/pyspark.pandas.extensions.register_dataframe_accessor.html#pyspark.pandas.extensions.register_dataframe_accessor">[docs]</a><span class="k">def</span> <span class="nf">register_dataframe_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">Callable</span><span class="p">[[</span><span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]],</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]]:</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Register a custom accessor with a DataFrame</span> |
| |
| <span class="sd"> Parameters</span> |
| <span class="sd"> ----------</span> |
| <span class="sd"> name : str</span> |
| <span class="sd"> name used when calling the accessor after its registered</span> |
| |
| <span class="sd"> Returns</span> |
| <span class="sd"> -------</span> |
| <span class="sd"> callable</span> |
| <span class="sd"> A class decorator.</span> |
| |
| <span class="sd"> See Also</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> register_series_accessor: Register a custom accessor on Series objects</span> |
| <span class="sd"> register_index_accessor: Register a custom accessor on Index objects</span> |
| |
| <span class="sd"> Notes</span> |
| <span class="sd"> -----</span> |
| <span class="sd"> When accessed, your accessor will be initialized with the pandas-on-Spark object the user</span> |
| <span class="sd"> is interacting with. The accessor's init method should always ingest the object being accessed.</span> |
| <span class="sd"> See the examples for the init signature.</span> |
| |
| <span class="sd"> In the pandas API, if data passed to your accessor has an incorrect dtype, it's recommended to</span> |
| <span class="sd"> raise an ``AttributeError`` for consistency purposes. In pandas-on-Spark, ``ValueError`` is more</span> |
| <span class="sd"> frequently used to annotate when a value's datatype is unexpected for a given method/function.</span> |
| |
| <span class="sd"> Ultimately, you can structure this however you like, but pandas-on-Spark would likely do</span> |
| <span class="sd"> something like this:</span> |
| |
| <span class="sd"> >>> ps.Series(['a', 'b']).dt</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> Traceback (most recent call last):</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> ValueError: Cannot call DatetimeMethods on type StringType()</span> |
| |
| <span class="sd"> Examples</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> In your library code::</span> |
| |
| <span class="sd"> from pyspark.pandas.extensions import register_dataframe_accessor</span> |
| |
| <span class="sd"> @register_dataframe_accessor("geo")</span> |
| <span class="sd"> class GeoAccessor:</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> self._obj = pandas_on_spark_obj</span> |
| <span class="sd"> # other constructor logic</span> |
| |
| <span class="sd"> @property</span> |
| <span class="sd"> def center(self):</span> |
| <span class="sd"> # return the geographic center point of this DataFrame</span> |
| <span class="sd"> lat = self._obj.latitude</span> |
| <span class="sd"> lon = self._obj.longitude</span> |
| <span class="sd"> return (float(lon.mean()), float(lat.mean()))</span> |
| |
| <span class="sd"> def plot(self):</span> |
| <span class="sd"> # plot this array's data on a map</span> |
| <span class="sd"> pass</span> |
| |
| <span class="sd"> Then, in an ipython session::</span> |
| |
| <span class="sd"> >>> ## Import if the accessor is in the other file.</span> |
| <span class="sd"> >>> # from my_ext_lib import GeoAccessor</span> |
| <span class="sd"> >>> psdf = ps.DataFrame({"longitude": np.linspace(0,10),</span> |
| <span class="sd"> ... "latitude": np.linspace(0, 20)})</span> |
| <span class="sd"> >>> psdf.geo.center # doctest: +SKIP</span> |
| <span class="sd"> (5.0, 10.0)</span> |
| |
| <span class="sd"> >>> psdf.geo.plot() # doctest: +SKIP</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas</span> <span class="kn">import</span> <span class="n">DataFrame</span> |
| |
| <span class="k">return</span> <span class="n">_register_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">DataFrame</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="register_series_accessor"><a class="viewcode-back" href="../../../reference/pyspark.pandas/api/pyspark.pandas.extensions.register_series_accessor.html#pyspark.pandas.extensions.register_series_accessor">[docs]</a><span class="k">def</span> <span class="nf">register_series_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">Callable</span><span class="p">[[</span><span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]],</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]]:</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Register a custom accessor with a Series object</span> |
| |
| <span class="sd"> Parameters</span> |
| <span class="sd"> ----------</span> |
| <span class="sd"> name : str</span> |
| <span class="sd"> name used when calling the accessor after its registered</span> |
| |
| <span class="sd"> Returns</span> |
| <span class="sd"> -------</span> |
| <span class="sd"> callable</span> |
| <span class="sd"> A class decorator.</span> |
| |
| <span class="sd"> See Also</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> register_dataframe_accessor: Register a custom accessor on DataFrame objects</span> |
| <span class="sd"> register_index_accessor: Register a custom accessor on Index objects</span> |
| |
| <span class="sd"> Notes</span> |
| <span class="sd"> -----</span> |
| <span class="sd"> When accessed, your accessor will be initialized with the pandas-on-Spark object the user is</span> |
| <span class="sd"> interacting with. The code signature must be::</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> # constructor logic</span> |
| <span class="sd"> ...</span> |
| |
| <span class="sd"> In the pandas API, if data passed to your accessor has an incorrect dtype, it's recommended to</span> |
| <span class="sd"> raise an ``AttributeError`` for consistency purposes. In pandas-on-Spark, ``ValueError`` is more</span> |
| <span class="sd"> frequently used to annotate when a value's datatype is unexpected for a given method/function.</span> |
| |
| <span class="sd"> Ultimately, you can structure this however you like, but pandas-on-Spark would likely do</span> |
| <span class="sd"> something like this:</span> |
| |
| <span class="sd"> >>> ps.Series(['a', 'b']).dt</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> Traceback (most recent call last):</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> ValueError: Cannot call DatetimeMethods on type StringType()</span> |
| |
| <span class="sd"> Examples</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> In your library code::</span> |
| |
| <span class="sd"> from pyspark.pandas.extensions import register_series_accessor</span> |
| |
| <span class="sd"> @register_series_accessor("geo")</span> |
| <span class="sd"> class GeoAccessor:</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> self._obj = pandas_on_spark_obj</span> |
| |
| <span class="sd"> @property</span> |
| <span class="sd"> def is_valid(self):</span> |
| <span class="sd"> # boolean check to see if series contains valid geometry</span> |
| <span class="sd"> return True</span> |
| |
| <span class="sd"> Then, in an ipython session::</span> |
| |
| <span class="sd"> >>> ## Import if the accessor is in the other file.</span> |
| <span class="sd"> >>> # from my_ext_lib import GeoAccessor</span> |
| <span class="sd"> >>> psdf = ps.DataFrame({"longitude": np.linspace(0,10),</span> |
| <span class="sd"> ... "latitude": np.linspace(0, 20)})</span> |
| <span class="sd"> >>> psdf.longitude.geo.is_valid # doctest: +SKIP</span> |
| <span class="sd"> True</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas</span> <span class="kn">import</span> <span class="n">Series</span> |
| |
| <span class="k">return</span> <span class="n">_register_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">Series</span><span class="p">)</span></div> |
| |
| |
| <div class="viewcode-block" id="register_index_accessor"><a class="viewcode-back" href="../../../reference/pyspark.pandas/api/pyspark.pandas.extensions.register_index_accessor.html#pyspark.pandas.extensions.register_index_accessor">[docs]</a><span class="k">def</span> <span class="nf">register_index_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">Callable</span><span class="p">[[</span><span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]],</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">]]:</span> |
| <span class="w"> </span><span class="sd">"""</span> |
| <span class="sd"> Register a custom accessor with an Index</span> |
| |
| <span class="sd"> Parameters</span> |
| <span class="sd"> ----------</span> |
| <span class="sd"> name : str</span> |
| <span class="sd"> name used when calling the accessor after its registered</span> |
| |
| <span class="sd"> Returns</span> |
| <span class="sd"> -------</span> |
| <span class="sd"> callable</span> |
| <span class="sd"> A class decorator.</span> |
| |
| <span class="sd"> See Also</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> register_dataframe_accessor: Register a custom accessor on DataFrame objects</span> |
| <span class="sd"> register_series_accessor: Register a custom accessor on Series objects</span> |
| |
| <span class="sd"> Notes</span> |
| <span class="sd"> -----</span> |
| <span class="sd"> When accessed, your accessor will be initialized with the pandas-on-Spark object the user is</span> |
| <span class="sd"> interacting with. The code signature must be::</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> # constructor logic</span> |
| <span class="sd"> ...</span> |
| |
| <span class="sd"> In the pandas API, if data passed to your accessor has an incorrect dtype, it's recommended to</span> |
| <span class="sd"> raise an ``AttributeError`` for consistency purposes. In pandas-on-Spark, ``ValueError`` is more</span> |
| <span class="sd"> frequently used to annotate when a value's datatype is unexpected for a given method/function.</span> |
| |
| <span class="sd"> Ultimately, you can structure this however you like, but pandas-on-Spark would likely do</span> |
| <span class="sd"> something like this:</span> |
| |
| <span class="sd"> >>> ps.Series(['a', 'b']).dt</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> Traceback (most recent call last):</span> |
| <span class="sd"> ...</span> |
| <span class="sd"> ValueError: Cannot call DatetimeMethods on type StringType()</span> |
| |
| <span class="sd"> Examples</span> |
| <span class="sd"> --------</span> |
| <span class="sd"> In your library code::</span> |
| |
| <span class="sd"> from pyspark.pandas.extensions import register_index_accessor</span> |
| |
| <span class="sd"> @register_index_accessor("foo")</span> |
| <span class="sd"> class CustomAccessor:</span> |
| |
| <span class="sd"> def __init__(self, pandas_on_spark_obj):</span> |
| <span class="sd"> self._obj = pandas_on_spark_obj</span> |
| <span class="sd"> self.item = "baz"</span> |
| |
| <span class="sd"> @property</span> |
| <span class="sd"> def bar(self):</span> |
| <span class="sd"> # return item value</span> |
| <span class="sd"> return self.item</span> |
| |
| <span class="sd"> Then, in an ipython session::</span> |
| |
| <span class="sd"> >>> ## Import if the accessor is in the other file.</span> |
| <span class="sd"> >>> # from my_ext_lib import CustomAccessor</span> |
| <span class="sd"> >>> psdf = ps.DataFrame({"longitude": np.linspace(0,10),</span> |
| <span class="sd"> ... "latitude": np.linspace(0, 20)})</span> |
| <span class="sd"> >>> psdf.index.foo.bar # doctest: +SKIP</span> |
| <span class="sd"> 'baz'</span> |
| <span class="sd"> """</span> |
| <span class="kn">from</span> <span class="nn">pyspark.pandas</span> <span class="kn">import</span> <span class="n">Index</span> |
| |
| <span class="k">return</span> <span class="n">_register_accessor</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">Index</span><span class="p">)</span></div> |
| |
| |
| <span class="k">def</span> <span class="nf">_test</span><span class="p">()</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> |
| <span class="kn">import</span> <span class="nn">os</span> |
| <span class="kn">import</span> <span class="nn">doctest</span> |
| <span class="kn">import</span> <span class="nn">sys</span> |
| <span class="kn">import</span> <span class="nn">numpy</span> |
| <span class="kn">from</span> <span class="nn">pyspark.sql</span> <span class="kn">import</span> <span class="n">SparkSession</span> |
| <span class="kn">import</span> <span class="nn">pyspark.pandas.extensions</span> |
| |
| <span class="n">os</span><span class="o">.</span><span class="n">chdir</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="p">[</span><span class="s2">"SPARK_HOME"</span><span class="p">])</span> |
| |
| <span class="n">globs</span> <span class="o">=</span> <span class="n">pyspark</span><span class="o">.</span><span class="n">pandas</span><span class="o">.</span><span class="n">extensions</span><span class="o">.</span><span class="vm">__dict__</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> |
| <span class="n">globs</span><span class="p">[</span><span class="s2">"np"</span><span class="p">]</span> <span class="o">=</span> <span class="n">numpy</span> |
| <span class="n">globs</span><span class="p">[</span><span class="s2">"ps"</span><span class="p">]</span> <span class="o">=</span> <span class="n">pyspark</span><span class="o">.</span><span class="n">pandas</span> |
| <span class="n">spark</span> <span class="o">=</span> <span class="p">(</span> |
| <span class="n">SparkSession</span><span class="o">.</span><span class="n">builder</span><span class="o">.</span><span class="n">master</span><span class="p">(</span><span class="s2">"local[4]"</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">appName</span><span class="p">(</span><span class="s2">"pyspark.pandas.extensions tests"</span><span class="p">)</span> |
| <span class="o">.</span><span class="n">getOrCreate</span><span class="p">()</span> |
| <span class="p">)</span> |
| <span class="p">(</span><span class="n">failure_count</span><span class="p">,</span> <span class="n">test_count</span><span class="p">)</span> <span class="o">=</span> <span class="n">doctest</span><span class="o">.</span><span class="n">testmod</span><span class="p">(</span> |
| <span class="n">pyspark</span><span class="o">.</span><span class="n">pandas</span><span class="o">.</span><span class="n">extensions</span><span class="p">,</span> |
| <span class="n">globs</span><span class="o">=</span><span class="n">globs</span><span class="p">,</span> |
| <span class="n">optionflags</span><span class="o">=</span><span class="n">doctest</span><span class="o">.</span><span class="n">ELLIPSIS</span> <span class="o">|</span> <span class="n">doctest</span><span class="o">.</span><span class="n">NORMALIZE_WHITESPACE</span><span class="p">,</span> |
| <span class="p">)</span> |
| <span class="n">spark</span><span class="o">.</span><span class="n">stop</span><span class="p">()</span> |
| <span class="k">if</span> <span class="n">failure_count</span><span class="p">:</span> |
| <span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> |
| |
| |
| <span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">"__main__"</span><span class="p">:</span> |
| <span class="n">_test</span><span class="p">()</span> |
| </pre></div> |
| |
| </article> |
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