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B �5�g�! � @ s� d Z ddlmZ ddlZddlmZ G dd� d�ZG dd� d�Zd d d d �d d�ZG dd� d�Z eddd�dd� �Z ee dd�dd� �Z ee dd�dd� �Z ee d d�d d � �Z dS ) z� accessor.py contains base classes for implementing accessor properties that can be mixed into or pinned onto other pandas classes. � )� annotationsN)�docc s\ e Zd ZU e� Zded< e� Zded< dd�dd�Zdd�dd �Z d d�� fd d � Z � Z S ) � DirNamesMixinzset[str]� _accessorszfrozenset[str]� _hidden_attrs)�returnc C s | j | jB S )z: Delete unwanted __dir__ for this object. )r r )�self� r �J/home/digitalm-up/venv/lib/python3.7/site-packages/pandas/core/accessor.py�_dir_deletions s z DirNamesMixin._dir_deletionsc s � fdd�� j D �S )z9 Add additional __dir__ for this object. c s h | ]}t � |�r|�qS r )�hasattr)�.0�accessor)r r r � <setcomp> s z/DirNamesMixin._dir_additions.<locals>.<setcomp>)r )r r )r r �_dir_additions s z DirNamesMixin._dir_additionsz list[str]c s* t t� �� �}|| �� | �� B }t|�S )z� Provide method name lookup and completion. Notes ----- Only provide 'public' methods. )�set�super�__dir__r r �sorted)r �rv)� __class__r r r s zDirNamesMixin.__dir__) �__name__� __module__� __qualname__r r �__annotations__� frozensetr r r r � __classcell__r r )r r r s r c @ s> e Zd ZdZdd� Zdd� Zdd� Zedd d d �d d ��ZdS )�PandasDelegatez@ Abstract base class for delegating methods/properties. c O s t d|� ���d S )Nz You cannot access the property )� TypeError)r �name�args�kwargsr r r �_delegate_property_get0 s z%PandasDelegate._delegate_property_getc O s t d|� d���d S )Nz The property z cannot be set)r )r r �valuer r! r r r �_delegate_property_set3 s z%PandasDelegate._delegate_property_setc O s t d|� ���d S )NzYou cannot call method )r )r r r r! r r r �_delegate_method6 s z PandasDelegate._delegate_methodF�str�bool)�typ� overwritec s^ � fdd�}� fdd�}x@|D ]8}|dkr4||�}n||�}|sJt | |�s t| ||� q W dS )a� Add accessors to cls from the delegate class. Parameters ---------- cls Class to add the methods/properties to. delegate Class to get methods/properties and doc-strings. accessors : list of str List of accessors to add. typ : {'property', 'method'} overwrite : bool, default False Overwrite the method/property in the target class if it exists. c s: � fdd�}� fdd�}� |_ � |_ t||t�� �jd�S )Nc s | � � �S )N)r" )r )r r r �_getterN s z[PandasDelegate._add_delegate_accessors.<locals>._create_delegator_property.<locals>._getterc s | � � |�S )N)r$ )r � new_values)r r r �_setterQ s z[PandasDelegate._add_delegate_accessors.<locals>._create_delegator_property.<locals>._setter)�fget�fsetr )r �property�getattr�__doc__)r r* r, )�delegate)r r �_create_delegator_propertyM s zJPandasDelegate._add_delegate_accessors.<locals>._create_delegator_propertyc s$ � fdd�}� |_ t�� �j|_|S )Nc s | j � f|�|�S )N)r% )r r r! )r r r �f\ s zSPandasDelegate._add_delegate_accessors.<locals>._create_delegator_method.<locals>.f)r r0 r1 )r r4 )r2 )r r �_create_delegator_method[ s zHPandasDelegate._add_delegate_accessors.<locals>._create_delegator_methodr/ N)r �setattr) �clsr2 � accessorsr( r) r3 r5 r r4 r )r2 r �_add_delegate_accessors9 s z&PandasDelegate._add_delegate_accessorsN)F) r r r r1 r" r$ r% � classmethodr9 r r r r r + s r Fr& r' )r( r) c s � ���fdd�}|S )a� Add delegated names to a class using a class decorator. This provides an alternative usage to directly calling `_add_delegate_accessors` below a class definition. Parameters ---------- delegate : object The class to get methods/properties & doc-strings. accessors : Sequence[str] List of accessor to add. typ : {'property', 'method'} overwrite : bool, default False Overwrite the method/property in the target class if it exists. Returns ------- callable A class decorator. Examples -------- @delegate_names(Categorical, ["categories", "ordered"], "property") class CategoricalAccessor(PandasDelegate): [...] c s | j �� ��d� | S )N)r) )r9 )r7 )r8 r2 r) r( r r �add_delegate_accessors� s z.delegate_names.<locals>.add_delegate_accessorsr )r2 r8 r( r) r; r )r8 r2 r) r( r �delegate_namesp s r< c @ s( e Zd ZdZddd�dd�Zdd� Zd S ) �CachedAccessora� Custom property-like object. A descriptor for caching accessors. Parameters ---------- name : str Namespace that will be accessed under, e.g. ``df.foo``. accessor : cls Class with the extension methods. Notes ----- For accessor, The class's __init__ method assumes that one of ``Series``, ``DataFrame`` or ``Index`` as the single argument ``data``. r& �None)r r c C s || _ || _d S )N)�_name� _accessor)r r r r r r �__init__� s zCachedAccessor.__init__c C s, |d kr| j S | � |�}t�|| j|� |S )N)r@ �object� __setattr__r? )r �objr7 Z accessor_objr r r �__get__� s zCachedAccessor.__get__N)r r r r1 rA rE r r r r r= � s r= � )�klassZothersc s � �fdd�}|S )aG Register a custom accessor on {klass} objects. Parameters ---------- name : str Name under which the accessor should be registered. A warning is issued if this name conflicts with a preexisting attribute. Returns ------- callable A class decorator. See Also -------- register_dataframe_accessor : Register a custom accessor on DataFrame objects. register_series_accessor : Register a custom accessor on Series objects. register_index_accessor : Register a custom accessor on Index objects. Notes ----- When accessed, your accessor will be initialized with the pandas object the user is interacting with. So the signature must be .. code-block:: python def __init__(self, pandas_object): # noqa: E999 ... For consistency with pandas methods, you should raise an ``AttributeError`` if the data passed to your accessor has an incorrect dtype. >>> pd.Series(['a', 'b']).dt Traceback (most recent call last): ... AttributeError: Can only use .dt accessor with datetimelike values Examples -------- In your library code:: import pandas as pd @pd.api.extensions.register_dataframe_accessor("geo") class GeoAccessor: def __init__(self, pandas_obj): self._obj = pandas_obj @property def center(self): # return the geographic center point of this DataFrame lat = self._obj.latitude lon = self._obj.longitude return (float(lon.mean()), float(lat.mean())) def plot(self): # plot this array's data on a map, e.g., using Cartopy pass Back in an interactive IPython session: .. code-block:: ipython In [1]: ds = pd.DataFrame({{"longitude": np.linspace(0, 10), ...: "latitude": np.linspace(0, 20)}}) In [2]: ds.geo.center Out[2]: (5.0, 10.0) In [3]: ds.geo.plot() # plots data on a map c s\ t � ��r:tjdt| �� dt��� dt� �� d�tdd� t� �t�| �� � j��� | S )Nzregistration of accessor z under name z for type z: is overriding a preexisting attribute with the same name.� )� stacklevel) r �warnings�warn�repr� UserWarningr6 r= r �add)r )r7 r r r � decorator s " z%_register_accessor.<locals>.decoratorr )r r7 rO r )r7 r r �_register_accessor� s I rP � DataFrame)rG c C s ddl m} t| |�S )Nr )rQ )�pandasrQ rP )r rQ r r r �register_dataframe_accessor s rS �Seriesc C s ddl m} t| |�S )Nr )rT )rR rT rP )r rT r r r �register_series_accessor s rU �Indexc C s ddl m} t| |�S )Nr )rV )rR rV rP )r rV r r r �register_index_accessor% s rW )F)r1 � __future__r rJ Zpandas.util._decoratorsr r r r< r= rP rS rU rW r r r r �<module> s E)%Y
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