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A wrapper for an ElementTree :class:`xml.etree.ElementTree.Element`
for Selector matching.
This class should not be instanciated directly.
:meth:`from_xml_root` or :meth:`from_html_root` should be used
for the root element of a document,
and other elements should be accessed (and wrappers generated)
using methods such as :meth:`iter_children` and :meth:`iter_subtree`.
:class:`ElementWrapper` objects compare equal
if their underlying :class:`xml.etree.ElementTree.Element` do.
Nc C s | j ||ddS )a. Wrap for selector matching the root of an XML or XHTML document.
:param root:
An ElementTree :class:`xml.etree.ElementTree.Element`
for the root element of a document.
If the given element is not the root,
selector matching will behave is if it were.
In other words, selectors will be not be `scoped`_
to the subtree rooted at that element.
:returns:
A new :class:`ElementWrapper`
.. _scoped: https://drafts.csswg.org/selectors-4/#scoping
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from_xml_root) s z ElementWrapper.from_xml_rootc C s | j ||ddS )a2 Same as :meth:`from_xml_root`, but for documents parsed with an HTML parser
like html5lib, which should be the case of documents with the
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Compared to :meth:`from_xml_root`,
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iter_children)r elementr r r __iter__r s zElementWrapper.__iter__c c s$ | }x|j dk r |j }|V qW dS )u Return an iterator of existing :class:`ElementWrapper` objects
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N)r" )r r/ r r r iter_ancestorsv s z ElementWrapper.iter_ancestorsc c s$ | }x|j dk r |j }|V qW dS )u Return an iterator of existing :class:`ElementWrapper` objects
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N)r" r# r$ r ) enumerater' r r )r childiZ etree_childr r r r. s
z ElementWrapper.iter_childrenc c sN t | gg}x<|rHt|d d}|dkr2|j q|V |j|j qW dS )a Return an iterator of newly-created :class:`ElementWrapper` objects
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in tree order.
Unlike in other methods, the element itself *is* included.
This loops over an entire document:
.. code-block:: python
for element in ElementWrapper.from_root(root_etree).iter_subtree():
...
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c 3 s | ]}| V qd S )Nr )r> r= )r r r s z)ElementWrapper.matches..)anyrB )r rA r )r r matches s zElementWrapper.matchesc sN | j | t dkr(t d | j S |rB fdd| j D S tf S dS )a
Return elements, in tree order, that match any of the given selectors.
Selectors are `scoped`_ to the subtree rooted at this element.
.. _scoped: https://drafts.csswg.org/selectors-4/#scoping
:param selectors:
Each given selector is either a :class:`compiler.CompiledSelector`,
or an argument to :func:`compile_selector_list`.
:returns:
An iterator of newly-created :class:`ElementWrapper` objects.
r r c 3 s( | ] t fd dD r V qdS )c 3 s | ]}| V qd S )Nr )r> r= )r/ r r rC s z5ElementWrapper.query_all...N)rD )r> )tests)r/ r rC s z+ElementWrapper.query_all..N)rB lenfilterr< r7 )r rA r )rF r query_all s
zElementWrapper.query_allc G s t | j| dS )a Return the first element (in tree order)
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:returns:
A newly-created :class:`ElementWrapper` object,
or :obj:`None` if there is no match.
N)r8 rI )r rA r r r query s zElementWrapper.queryc C s dd | j D S )uK This element’s children,
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Other ElementTree nodes such as
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`
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isinstancetagstr)r> cr r r r@ s z1ElementWrapper.etree_children..)r& )r r r r r' s z ElementWrapper.etree_childrenc C s" t | jj\}}|| jtd< |S )z,The local name of this element, as a string.
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local_namer r r rQ s zElementWrapper.local_namec C s" t | jj\}}|| jtd< |S )z/The namespace URL of this element, as a string.rQ )rP r& rL r rM )r rO rQ r r r rO s z ElementWrapper.namespace_urlc C s | j jdS )z$The ID of this element, as a string.id)r& r )r r r r rR s zElementWrapper.idc C s t t| jjddS )z:The classes of this element, as a :class:`set` of strings.class )setr r& r )r r r r classes s zElementWrapper.classesc C s | j jd}|dk r t|S | jp*| jdk}|rL| j jd}|dk rLt|S | jdk r^| jjS |rd}| j jd}x2|D ]*}|jdd}t|dkrxt|jd }qxW |dk rt|S t| j pdS )
z*The language of this element, as a string.z*{http://www.w3.org/XML/1998/namespace}langNz http://www.w3.org/1999/xhtmllangz"{http://www.w3.org/1999/xhtml}metaz
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r c C sJ | j d}|dkrd| fS | d dks*t| d| | |d d fS d S )N}r rT r {r6 )rfindAssertionError)rL posr r r rP Q s
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