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Usage:: >>> el = fromstring('<p class="hidden large">Text</p>') >>> classes = el.classes # or: classes = Classes(el.attrib) >>> classes |= ['block', 'paragraph'] >>> el.get('class') 'hidden large block paragraph' >>> classes.toggle('hidden') False >>> el.get('class') 'large block paragraph' >>> classes -= ('some', 'classes', 'block') >>> el.get('class') 'large paragraph' c C s || _ t|jdd�| _d S )N�class� )� _attributesr �get�_get_class_value)�selfZ attributesr# r# r$ �__init__� s zClasses.__init__c C sR |rt �d|�r td| ��| �� �� }||kr4dS |�|� d�|�| jd< dS )z[ Add a class. This has no effect if the class is already present. z\szInvalid class name: %rN� r> )r �search� ValueErrorrB r: �append�joinr@ )rC �value�classesr# r# r$ �add� s z Classes.addc sb � rt �d� �r td� ��� fdd�| �� �� D �}|rLd�|�| jd< nd| jkr^| jd= dS )zn Remove a class if it is currently present. If the class is not present, do nothing. z\szInvalid class name: %rc s g | ]}|� kr|�qS r# r# )�.0�name)rJ r# r$ � <listcomp>� s z#Classes.discard.<locals>.<listcomp>rE r> N)r rF rG rB r: rI r@ )rC rJ rK r# )rJ r$ �discard� s zClasses.discardc s0 |rt �d|�r td| ��tt| ��|� dS )zw Remove a class; it must currently be present. If the class is not present, raise a KeyError. z\szInvalid class name: %rN)r rF rG �superr= �remove)rC rJ )� __class__r# r$ rR � s zClasses.removec C s | � � }||ko||�� kS )N)rB r: )rC rN rK r# r# r$ � __contains__� s zClasses.__contains__c C s t | �� �� �S )N)�iterrB r: )rC r# r# r$ �__iter__� s zClasses.__iter__c C s t | �� �� �S )N)r8 rB r: )rC r# r# r$ �__len__� s zClasses.__len__c C sL | � � �� }d}x"|D ]}||kr|�|� d}qW |rHd�|�| jd< dS )z. Add all names from 'values'. FTrE r> N)rB r: rH rI r@ )rC �valuesrK �extendedrJ r# r# r$ �update� s zClasses.updatec C s� |rt �d|�r td| ��| �� �� }y|�|� d}W n" tk r\ |�|� d}Y nX |rtd�|�| jd< n| jd= |S )z� Add a class name if it isn't there yet, or remove it if it exists. Returns true if the class was added (and is now enabled) and false if it was removed (and is now disabled). z\szInvalid class name: %rFTrE r> ) r rF rG rB r: rR rH rI r@ )rC rJ rK �enabledr# r# r$ �toggle� s zClasses.toggle)�__name__� __module__� __qualname__�__doc__rD rL rP rR rT rV rW rZ r\ � __classcell__r# r# )rS r$ r= � s r= c s� e Zd Zd+� fdd� Zedd� �Zejdd� �Zedd� �Zed d � �Zed d � �Z ed d� �Z edd� �Z e jdd� �Z e j dd� �Z dd� Z dd� Zdd� Zdd� Zdd � Zd d � Zd,d d!�Zd-d#d$�Zd.d%d&�Zd'd(� Zd/d)d*�Z� ZS )0� HtmlMixinNc s t t| ��||� dS )z�set(self, key, value=None) Sets an element attribute. If no value is provided, or if the value is None, creates a 'boolean' attribute without value, e.g. "<form novalidate></form>" for ``form.set('novalidate')``. N)rQ � HtmlElement�set)rC �keyrJ )rS r# r$ rd � s z HtmlMixin.setc C s t | j�S )zB A set-like wrapper around the 'class' attribute. )r= �attrib)rC r# r# r$ rK � s zHtmlMixin.classesc C sB t |t�st�|�� }|r(| �d|� n| �d�d k r>| jd= d S )Nr> )r6 r= �AssertionErrorrB rd rA rf )rC rK rJ r# r# r$ rK s c C s | � � jjS )z� Returns the base URL, given when the page was parsed. Use with ``urlparse.urljoin(el.base_url, href)`` to get absolute URLs. )Z getroottree�docinfo�URL)rC r# r# r$ �base_url s zHtmlMixin.base_urlc C s t | �S )z0 Return a list of all the forms )� _forms_xpath)rC r# r# r$ �forms s zHtmlMixin.formsc C s | j ddtid�d S )zt Return the <body> element. Can be called from a child element to get the document's head. z//body|//x:bodyr& )r' r )�xpathr9 )rC r# r# r$ �body s zHtmlMixin.bodyc C s | j ddtid�d S )zu Returns the <head> element. Can be called from a child element to get the document's head. z//head|//x:headr& )r' r )rm r9 )rC r# r# r$ �head# s zHtmlMixin.headc C s2 | � d�}|sdS t| |d�}|s&dS |d S dS )zN Get or set any <label> element associated with this element. �idN)rp r )rA � _label_xpath)rC rp r2 r# r# r$ �label+ s zHtmlMixin.labelc C sD | � d�}|std| ��t|j�dkr4td| ��|�d|� d S )Nrp z9You cannot set a label for an element (%r) that has no idrr z5You can only assign label to a label element (not %r)�for)rA � TypeErrorr< r; rd )rC rr rp r# r# r$ rr 9 s c C s | j }|d k r|jd= d S )Nrs )rr rf )rC rr r# r# r$ rr F s c C s^ | � � }|dk st�| jrP| �� }|dkr>|jp2d| j |_n|jpFd| j |_|�| � dS )z� Removes this element from the tree, including its children and text. The tail text is joined to the previous element or parent. Nr? )� getparentrg �tail� getprevious�textrR )rC �parent�previousr# r# r$ � drop_treeL s zHtmlMixin.drop_treec C s� | � � }|dk st�| �� }| jr\t| jt�r\|dkrJ|jp>d| j |_n|jpRd| j |_| jr�t| �r�| d }|jpzd| j |_n.|dkr�|jp�d| j |_n|jp�d| j |_|� | �}| dd� |||d �< dS )a] Remove the tag, but not its children or text. The children and text are merged into the parent. Example:: >>> h = fragment_fromstring('<div>Hello <b>World!</b></div>') >>> h.find('.//b').drop_tag() >>> print(tostring(h, encoding='unicode')) <div>Hello World!</div> Nr? r) r ) ru rg rw rx r6 r; r7 rv r8 �index)rC ry rz �lastr| r# r# r$ �drop_tag\ s zHtmlMixin.drop_tagc s � � � � � fdd�t| �D �S )z] Find any links like ``<a rel="{rel}">...</a>``; returns a list of elements. c s" g | ]}|� d ��� � kr|�qS )�rel)rA �lower)rM �el)r r# r$ rO � s z,HtmlMixin.find_rel_links.<locals>.<listcomp>)r� �_rel_links_xpath)rC r r# )r r$ r | s zHtmlMixin.find_rel_linksc C s t | |d�S )z> Find any elements with the given class name. )� class_name)� _class_xpath)rC r� r# r# r$ r � s zHtmlMixin.find_classc G s> yt | |d�d S tk r8 |r,|d S t|��Y nX dS )a� Get the first element in a document with the given id. If none is found, return the default argument if provided or raise KeyError otherwise. Note that there can be more than one element with the same id, and this isn't uncommon in HTML documents found in the wild. Browsers return only the first match, and this function does the same. )rp r N)� _id_xpath� IndexError�KeyError)rC rp �defaultr# r# r$ �get_element_by_id� s zHtmlMixin.get_element_by_idc C s t | �S )zT Return the text content of the tag (and the text in any children). )�_collect_string_content)rC r# r# r$ � text_content� s zHtmlMixin.text_content�htmlc C s ddl m} |||d�| �S )a Run the CSS expression on this element and its children, returning a list of the results. Equivalent to lxml.cssselect.CSSSelect(expr, translator='html')(self) -- note that pre-compiling the expression can provide a substantial speedup. r )� CSSSelector)� translator)Zlxml.cssselectr� )rC �exprr� r� r# r# r$ � cssselect� s zHtmlMixin.cssselectTc s� � dkr | j � � dkr td��|r*| �� |dkr@� fdd�}n8|dkrV� fdd�}n"|dkrl� fdd�}n td | ��| �|� dS ) a� Make all links in the document absolute, given the ``base_url`` for the document (the full URL where the document came from), or if no ``base_url`` is given, then the ``.base_url`` of the document. If ``resolve_base_href`` is true, then any ``<base href>`` tags in the document are used *and* removed from the document. If it is false then any such tag is ignored. If ``handle_failures`` is None (default), a failure to process a URL will abort the processing. If set to 'ignore', errors are ignored. If set to 'discard', failing URLs will be removed. Nz3No base_url given, and the document has no base_url�ignorec s$ y t � | �S tk r | S X d S )N)r rG )�href)rj r# r$ � link_repl� s z0HtmlMixin.make_links_absolute.<locals>.link_replrP c s$ y t � | �S tk r d S X d S )N)r rG )r� )rj r# r$ r� � s c s t � | �S )N)r )r� )rj r# r$ r� � s z(unexpected value for handle_failures: %r)rj rt r rG r )rC rj r �handle_failuresr� r# )rj r$ r � s z HtmlMixin.make_links_absolutec C sR d}| j ddtid�}x |D ]}|�d�}|�� q W |s>dS | j|d|d� dS )a� Find any ``<base href>`` tag in the document, and apply its values to all links found in the document. Also remove the tag once it has been applied. If ``handle_failures`` is None (default), a failure to process a URL will abort the processing. If set to 'ignore', errors are ignored. If set to 'discard', failing URLs will be removed. Nz //base[@href]|//x:base[@href]r& )r' r� F)r r� )rm r9 rA r{ r )rC r� � base_hrefZbasetags�br# r# r$ r � s zHtmlMixin.resolve_base_hrefc c s� t j}�x�| �tj�D �]�}|j}t|j�}|dkr�d}d|krX|�d�}|d|dfV x>dD ]6}||kr^|�|�}|dk r�t ||�}|||dfV q^W d|kr�xpt � |�d��D ]2}|� d�}|dk r�t ||�}|d||� � fV q�W n(x&|D ] }||kr�|||| dfV q�W |dk�r�|�dd ��� } | d k�rH|�d d �} t| �}|�rZ|� d �n| �� } | �rHt| |�r||� d �n| �| ��\} } |d | | fV n�|d k�r�|�d��p�d } | �� dk�rH|d|�d�dfV nn|dk�rH|j�rHdd� t|j�D �dd� t|j�D � }|�rH|jdd� x |D ]\}} |d| |fV �q,W d|krtt|d ��}|rx@|ddd� D ].}t|� d�|� d��\} }|d| |fV �qtW qW dS )a Yield (element, attribute, link, pos), where attribute may be None (indicating the link is in the text). ``pos`` is the position where the link occurs; often 0, but sometimes something else in the case of links in stylesheets or style tags. Note: <base href> is *not* taken into account in any way. The link you get is exactly the link in the document. Note: multiple links inside of a single text string or attribute value are returned in reversed order. This makes it possible to replace or delete them from the text string value based on their reported text positions. Otherwise, a modification at one text position can change the positions of links reported later on. �objectN�codebaser )Zclassid�data�archive�metaz http-equivr? Zrefresh�content�url�param� valuetype�refrJ �stylec S s, g | ]$}t |�d �|�d ��ddd� �qS )r Nr) )r, �group�start)rM �matchr# r# r$ rO = s z'HtmlMixin.iterlinks.<locals>.<listcomp>c S s g | ]}|� d �|�d �f�qS )r )r� r� )rM r� r# r# r$ rO @ s T)�reverser) r )r � link_attrsrU r r rf r< r; rA r � _archive_re�finditerr� r� r� �_parse_meta_refresh_url�stripr, �findrx �_iter_css_urls�_iter_css_imports�sort�list)rC r� r� Zattribsr; r� rf rJ r� Z http_equivr� r� r+ r� Zurlsr� r# r# r$ r � sj " zHtmlMixin.iterlinksc C s |dk r| j ||d� n |r$| �� x�| �� D ]�\}}}}||�� �}||krPq.|dkrr|dkrhd|_q.|j|= q.|dkr�|jd|� | |j|t|� d� } | |_q.|�|�} |s�t| �t|�kr�|} n$| d|� | | |t|� d� } |�|| � q.W dS )a� Rewrite all the links in the document. For each link ``link_repl_func(link)`` will be called, and the return value will replace the old link. Note that links may not be absolute (unless you first called ``make_links_absolute()``), and may be internal (e.g., ``'#anchor'``). They can also be values like ``'mailto:email'`` or ``'javascript:expr'``. If you give ``base_href`` then all links passed to ``link_repl_func()`` will take that into account. If the ``link_repl_func`` returns None, the attribute or tag text will be removed completely. N)r r? ) r r r r� rx rf r8 rA rd ) rC Zlink_repl_funcr r� r� rf �linkr+ Znew_link�new�curr# r# r$ r R s, ( $zHtmlMixin.rewrite_links)N)r� )NTN)N)TN)r] r^ r_ rd �propertyrK �setterrj rl rn ro rr �deleterr{ r~ r r r� r� r� r r r r ra r# r# )rS r$ rb � s. , Z rb c @ s& e Zd ZdZdefdd�Zdd� ZdS )� _MethodFunca5 An object that represents a method on an element as a function; the function takes either an element or an HTML string. It returns whatever the function normally returns, or if the function works in-place (and so returns None) it returns a serialized form of the resulting document. Fc C s || _ || _t|| j �j| _d S )N)rN �copy�getattrr` )rC rN r� Z source_classr# r# r$ rD � s z_MethodFunc.__init__c O s� t |�}t|t�r6d|kr(td| j ��t|f|�}n(d|krJ|�d�}n| j}|r^t�|�}t || j�}|||�}|d kr�t ||�S |S d S )Nr� zQThe keyword 'copy' can only be used with element inputs to %s, not a string input) �typer6 r7 rt rN r �popr� �deepcopyr� r3 )rC �doc�args�kwZ result_typeZ make_a_copy�methr2 r# r# r$ �__call__� s z_MethodFunc.__call__N)r] r^ r_ r` rb rD r� r# r# r# r$ r� � s r� F)r� Tc @ s e Zd ZdS )� HtmlCommentN)r] r^ r_ r# r# r# r$ r� � s r� c @ s e Zd ZejZejZdS )rc N)r] r^ r_ rb r� rd r# r# r# r$ rc � s rc c @ s e Zd ZdS )�HtmlProcessingInstructionN)r] r^ r_ r# r# r# r$ r� � s r� c @ s e Zd ZdS )� HtmlEntityN)r] r^ r_ r# r# r# r$ r� � s r� c @ s& e Zd ZdZi Zddd�Zdd� ZdS )�HtmlElementClassLookupav A lookup scheme for HTML Element classes. To create a lookup instance with different Element classes, pass a tag name mapping of Element classes in the ``classes`` keyword argument and/or a tag name mapping of Mixin classes in the ``mixins`` keyword argument. The special key '*' denotes a Mixin class that should be mixed into all Element classes. Nc C s� t j�| � |d kr | j�� }|r�i }xP|D ]H\}}|dkrbx6|�� D ]}|�|g ��|� qFW q,|�|g ��|� q,W x@|�� D ]4\}}|� |t �}t ||g �} t |j | i �||< q�W || _d S )N�*)r �CustomElementClassLookuprD �_default_element_classesr� �keys� setdefaultrH �itemsrA rc �tupler� r] �_element_classes) rC rK ZmixinsZmixersrN rJ �nZ mix_basesr� �basesr# r# r$ rD � s z HtmlElementClassLookup.__init__c C sB |dkr| j �|�� t�S |dkr&tS |dkr2tS |dkr>tS d S )N�element�commentZPI�entity)r� rA r� rc r� r� r� )rC Z node_typeZdocument� namespacerN r# r# r$ �lookup� s z HtmlElementClassLookup.lookup)NN)r] r^ r_ r` r� rD r� r# r# r# r$ r� � s r� z^\s*<(?:html|!doctype)�asciic K st |d kr t }tj| |f|�}|d kr.t�d��|rP|�d�d krP|�dtd�� |rp|�d�d krp|�td�� |S )NzDocument is emptyro r rn )� html_parserr r � ParserErrorr� �insertr rH )r� �parserZensure_head_bodyr� rJ r# r# r$ r � s c K s� |dkr t }t| t�r8t| �sHd�d�| d�d� } nt| �sHd| } t| f||d�|��}t|j�dkspt �dd � |D �}t |�d ks�t d || f ��|d }g }|r�|j r�|j � � r�t �d |j ��|j r�|j � � r�|�|j � |�|� |S )aR Parses several HTML elements, returning a list of elements. The first item in the list may be a string. If no_leading_text is true, then it will be an error if there is leading text, and it will always be a list of only elements. base_url will set the document's base_url attribute (and the tree's docinfo.URL). Nz <html><body>r� z</body></html>z <html><body>%s</body></html>)r� rj r� c S s g | ]}t |j�d kr|�qS )rn )r< r; )rM �er# r# r$ rO s z(fragments_fromstring.<locals>.<listcomp>r ztoo many bodies: %r in %rr zThere is leading text: %r)r� r6 r0 �_looks_like_full_html_bytes�encode� _looks_like_full_html_unicoder r< r; rg r8 rx r� r r� rH �extend) r� �no_leading_textrj r� r� r� �bodiesrn �elementsr# r# r$ r s* c K s� |dkr t }t|�}t| f|| |d�|��}|rxt|t�s@d}t|�}|rtt|d t�rj|d |_|d= |�|� |S |s�t� d��t |�dkr�t� dd� d d � |D �� ��|d }|j r�|j � � r�t� d |j ��d|_ |S ) a Parses a single HTML element; it is an error if there is more than one element, or if anything but whitespace precedes or follows the element. If ``create_parent`` is true (or is a tag name) then a parent node will be created to encapsulate the HTML in a single element. In this case, leading or trailing text is also allowed, as are multiple elements as result of the parsing. Passing a ``base_url`` will set the document's ``base_url`` attribute (and the tree's docinfo.URL). N)r� r� rj �divr zNo elements foundr z Multiple elements found (%s)z, c S s g | ] }t |��qS r# )� _element_name)rM r� r# r# r$ rO S s z'fragment_fromstring.<locals>.<listcomp>z Element followed by text: %r)r� �boolr r6 r7 r rx r� r r� r8 rI rv r� ) r� Z create_parentrj r� r� Zaccept_leading_textr� �new_rootr� r# r# r$ r + s8 c K s� |dkr t }t| t�r t| �}nt| �}t| f||d�|��}|rF|S |�d�}|sb|�dt �}|r�|d }t|�dkr�xh|dd� D ]R}|j r�t|�r�|d j p�d|j |d _ n|j p�d|j |_ |� |� |� � q�W nd}|�d �} | �s|�d t �} | �rL| d } t| �dk�rHx(| dd� D ]} | � | � | � � �q,W |S |dk�rZ|S t|�dk�r�|j �r||j � � �s�|d j �r�|d j � � �s�|d S t|��r�d |_nd |_|S ) a Parse the html, returning a single element/document. This tries to minimally parse the chunk of text, without knowing if it is a fragment or a document. base_url will set the document's base_url attribute (and the tree's docinfo.URL) N)r� rj rn z{%s}bodyr r r) r? ro z{%s}headr� �span)r� r6 r0 r� r� r �findallr9 r8 rx rv r� r{ r� �_contains_block_level_tagr; ) r� rj r� r� Z is_full_htmlr� r� rn Z other_bodyZheadsro Z other_headr# r# r$ r \ sR " c K s$ |dkr t }tj| |fd|i|��S )a= Parse a filename, URL, or file-like object into an HTML document tree. Note: this returns a tree, not an element. Use ``parse(...).getroot()`` to get the document root. You can override the base URL with the ``base_url`` keyword. This is most useful when parsing from a file-like object. Nrj )r� r r )Zfilename_or_urlr� rj r� r# r# r$ r � s c C s. x(| � tj�D ]} t| j�tjkrdS qW dS )NTF)rU r r r< r; r Z block_tags)r� r# r# r$ r� � s r� c C s, t | tj�rdS t | t�r dS t| j�S d S )Nr� �string)r6 r � CommentBaser7 r< r; )r� r# r# r$ r� � s r� c @ s� e Zd ZdZedd� �Zedd� �Zejdd� �Zdd� Zd d � Z ed d � �Z e jd d � �Z e j dd � �Z edd� �Z e jdd� �Z dS )� FormElementz& Represents a <form> element. c C s t | �S )z� Returns an accessor for all the input elements in the form. See `InputGetter` for more information about the object. )� InputGetter)rC r# r# r$ �inputs� s zFormElement.inputsc C s t | j�S )z� Dictionary-like object that represents all the fields in this form. You can set values in this dictionary to effect the form. )� FieldsDictr� )rC r# r# r$ �fields� s zFormElement.fieldsc C sb | j }|�� }x.|�� D ]"\}}||kr2|�|� |||< qW x |D ]}|d krRqDd ||< qDW d S )N)r� r� r� rR )rC rJ r� Z prev_keysre r# r# r$ r� � s c C sb | � d�r| � d�S | � d�r,d| � d� S | jj}t|d��}|sTt|dt ��}t|�| ��S )NrN rp �#�formz{%s}form)rA rn rU r� r9 �strr| )rC Z iter_tagsrl r# r# r$ �_name� s zFormElement._namec C s� g }x�| j D ]�}|j}|r d|jkr&q t|j�}|dkrJ|�||jf� q |dkr�|j}|jr|x4|D ]}|�||f� qdW q�|dk r�|�||jf� q |dks�td| ��|j r�|j s�q |j dkr�q |j}|dk r |�||jf� q W |S )z� Return a list of tuples of the field values for the form. This is suitable to be passed to ``urllib.urlencode()``. �disabled�textarea�selectN�inputzUnexpected tag: %r)�submitZimage�reset�file) r� rN rf r< r; rH rJ �multiplerg � checkable�checkedr� )rC �resultsr� rN r; rJ �vr# r# r$ � form_values� s2 zFormElement.form_valuesc C s. | j }| �d�}|r&|dk r&t||�S |S dS )z: Get/set the form's ``action`` attribute. �actionN)rj rA r )rC rj r r# r# r$ r s zFormElement.actionc C s | � d|� d S )Nr )rd )rC rJ r# r# r$ r ! s c C s | j }d|kr|d= d S )Nr )rf )rC rf r# r# r$ r % s c C s | � dd��� S )zt Get/set the form's method. Always returns a capitalized string, and defaults to ``'GET'`` �method�GET)rA �upper)rC r# r# r$ r + s zFormElement.methodc C s | � d|�� � d S )Nr )rd r )rC rJ r# r# r$ r 3 s N) r] r^ r_ r` r� r� r� r� r� r� r r� r r# r# r# r$ r� � s r� r� c C sV | � � }|r(t|d�r |�� }|�|� |dkr4t}| jrB| j}n| j}|| j||�S )a% Helper function to submit a form. Returns a file-like object, as from ``urllib.urlopen()``. This object also has a ``.geturl()`` function, which shows the URL if there were any redirects. You can use this like:: form = doc.forms[0] form.inputs['foo'].value = 'bar' # etc response = form.submit() doc = parse(response) doc.make_links_absolute(response.geturl()) To change the HTTP requester, pass a function as ``open_http`` keyword argument that opens the URL for you. The function must have the following signature:: open_http(method, URL, values) The action is one of 'GET' or 'POST', the URL is the target URL as a string, and the values are a sequence of ``(name, value)`` tuples with the form data. r� N)r� �hasattrr� r� �open_http_urllibr rj r )r� Z extra_valuesZ open_httprX r� r# r# r$ r ; s c C s� |s t d��yddlm}m} W n, tk rL ddlm} ddlm} Y nX | dkr�d|krh|d7 }n|d7 }|||�7 }d }n ||�}t|t�s�|� d �}|||�S ) Nz cannot submit, no URL providedr )� urlencode�urlopen)r )r r �?�&�ASCII) rG �urllibr r � ImportErrorZurllib.request� urllib.parser6 r0 r� )r r� rX r r r� r# r# r$ r a s" r c @ sT e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dS )r� c C s || _ d S )N)r� )rC r� r# r# r$ rD z s zFieldsDict.__init__c C s | j | jS )N)r� rJ )rC �itemr# r# r$ � __getitem__| s zFieldsDict.__getitem__c C s || j | _d S )N)r� rJ )rC r rJ r# r# r$ � __setitem__~ s zFieldsDict.__setitem__c C s t d��d S )Nz'You cannot remove keys from ElementDict)r� )rC r r# r# r$ � __delitem__� s zFieldsDict.__delitem__c C s | j �� S )N)r� r� )rC r# r# r$ r� � s zFieldsDict.keysc C s || j kS )N)r� )rC r r# r# r$ rT � s zFieldsDict.__contains__c C s t | j�� �S )N)rU r� r� )rC r# r# r$ rV � s zFieldsDict.__iter__c C s t | j�S )N)r8 r� )rC r# r# r$ rW � s zFieldsDict.__len__c C s d| j j| jj�� f S )Nz<%s for form %s>)rS r] r� r� r� )rC r# r# r$ �__repr__� s zFieldsDict.__repr__N) r] r^ r_ rD r r r r� rT rV rW r r# r# r# r$ r� x s r� c @ sT e Zd ZdZe�d�Ze�d�Zdd� Zdd� Z dd � Z d d � Z d d � Z dd� Z dS )r� a An accessor that represents all the input fields in a form. You can get fields by name from this, with ``form.inputs['field_name']``. If there are a set of checkboxes with the same name, they are returned as a list (a `CheckboxGroup` which also allows value setting). Radio inputs are handled similarly. You can also iterate over this to get all input elements. This won't return the same thing as if you get all the names, as checkboxes and radio elements are returned individually. zk.//*[@name = $name and (local-name(.) = 'select' or local-name(.) = 'input' or local-name(.) = 'textarea')]zT.//*[local-name() = 'select' or local-name() = 'input' or local-name() = 'textarea']c C s || _ d S )N)r� )rC r� r# r# r$ rD � s zInputGetter.__init__c C s d| j j| j�� f S )Nz<%s for form %s>)rS r] r� r� )rC r# r# r$ r � s zInputGetter.__repr__c C s� | j | j|d�}|rx|d �d�}|dkrHt|�dkrHt|�}||_|S |dkrnt|�dkrnt|�}||_|S |d S n td| ��d S )N)rN r r� �radior �checkboxz!No input element with the name %r)� _name_xpathr� rA r8 � RadioGrouprN � CheckboxGroupr� )rC rN r� r� r� r# r# r$ r � s zInputGetter.__getitem__c C s | j | j|d�}t|�S )N)rN )r r� r� )rC rN r� r# r# r$ rT � s zInputGetter.__contains__c C s: t � }x| D ]}|�|j� q W d |kr2|�d � t|�S )N)rd rL rN rR r� )rC �namesr� r# r# r$ r� � s zInputGetter.keysc C s t | �| j��S )N)rU � _all_xpathr� )rC r# r# r$ rV � s zInputGetter.__iter__N)r] r^ r_ r` r �XPathr r rD r r rT r� rV r# r# r# r$ r� � s r� c @ s@ e Zd ZdZedd� �Zejdd� �Zejdd� �Zdd� ZdS ) � InputMixinzE Mix-in for all input elements (input, select, and textarea) c C s | � d�S )z1 Get/set the name of the element rN )rA )rC r# r# r$ rN � s zInputMixin.namec C s | � d|� d S )NrN )rd )rC rJ r# r# r$ rN � s c C s | j }d|kr|d= d S )NrN )rf )rC rf r# r# r$ rN � s c C s8 t | dd �}|rd| }nd}d| jjt| �| j|f S )Nr� z type=%rr? z<%s %x name=%r%s>)r� rS r] rp rN )rC Z type_namer# r# r$ r � s zInputMixin.__repr__N) r] r^ r_ r` r� rN r� r� r r# r# r# r$ r � s r c @ s8 e Zd ZdZedd� �Zejdd� �Zejdd� �ZdS )�TextareaElementzp ``<textarea>`` element. You can get the name with ``.name`` and get/set the value with ``.value`` c C sJ | j pd}| j�dt �r d}nd}x | D ]}|tj||dd�7 }q*W |S )zK Get/set the value (which is the contents of this element) r? z{%s}�xmlr� r. )r r- )rx r; � startswithr9 r r )rC r� Zserialisation_methodr� r# r# r$ rJ � s zTextareaElement.valuec C s | d d �= || _ d S )N)rx )rC rJ r# r# r$ rJ s c C s d| _ | d d �= d S )Nr? )rx )rC r# r# r$ rJ s N)r] r^ r_ r` r� rJ r� r� r# r# r# r$ r � s r r� c @ s^ e Zd ZdZedd� �Zejdd� �Zejdd� �Zedd� �Zedd � �Z e jd d � �Z d S ) � SelectElementa� ``<select>`` element. You can get the name with ``.name``. ``.value`` will be the value of the selected option, unless this is a multi-select element (``<select multiple>``), in which case it will be a set-like object. In either case ``.value_options`` gives the possible values. The boolean attribute ``.multiple`` shows if this is a multi-select. c C s� | j rt| �S t| �}ytdd� t|�D ��}W n@ tk rp ytdd� |D ��}W n tk rj dS X Y nX |�d�}|dkr�|jp�d�� }|S )z� Get/set the value of this select (the selected option). If this is a multi-select, this is a set-like object that represents all the selected options. c s s | ]}|� d �dk r|V qdS )�selectedN)rA )rM r� r# r# r$ � <genexpr>0 s z&SelectElement.value.<locals>.<genexpr>c s s | ]}|� d �dkr|V qdS )r� N)rA )rM r� r# r# r$ r! 3 s NrJ r? ) r� �MultipleSelectOptions�_options_xpath�next�reversed� StopIterationrA rx r� )rC �optionsZselected_optionrJ r# r# r$ rJ # s zSelectElement.valuec C s� | j r4t|t�rtd��| j}|�� |�|� d S d }|d k r�xJt| �D ]2}|�d�}|d krn|j phd� � }||krJ|}P qJW t d| ��x"t| �D ]}d|j kr�|j d= q�W |d k r�|� dd� d S )NzYou must pass in a sequencerJ r? z'There is no option with the value of %rr )r� r6 r7 rt rJ �clearrZ r# rA rx r� rG rf rd )rC rJ rX �checked_optionr� � opt_valuer# r# r$ rJ ; s. c C s | j r| j�� nd | _d S )N)r� rJ r( )rC r# r# r$ rJ V s c C sD g }x:t | �D ].}|�d�}|dkr2|jp,d�� }|�|� qW |S )z� All the possible values this select can have (the ``value`` attribute of all the ``<option>`` elements. rJ Nr? )r# rA rx r� rH )rC r' r� rJ r# r# r$ � value_options^ s zSelectElement.value_optionsc C s d| j kS )zW Boolean attribute: is there a ``multiple`` attribute on this element. r� )rf )rC r# r# r$ r� l s zSelectElement.multiplec C s( |r| � dd� nd| jkr$| jd= d S )Nr� r? )rd rf )rC rJ r# r# r$ r� s s N) r] r^ r_ r` r� rJ r� r� r+ r� r# r# r# r$ r s r r� c @ sD e Zd ZdZdd� Zedd� �Zdd� Zdd � Zd d � Z d d � Z dS )r" z� Represents all the selected options in a ``<select multiple>`` element. You can add to this set-like option to select an option, or remove to unselect the option. c C s || _ d S )N)r� )rC r� r# r# r$ rD � s z MultipleSelectOptions.__init__c C s t t| j��S )z< Iterator of all the ``<option>`` elements. )rU r# r� )rC r# r# r$ r' � s z MultipleSelectOptions.optionsc c sD x>| j D ]4}d|jkr|�d�}|d kr6|jp0d�� }|V qW d S )Nr rJ r? )r' rf rA rx r� )rC �optionr* r# r# r$ rV � s z MultipleSelectOptions.__iter__c C sV xP| j D ]:}|�d�}|d kr,|jp&d�� }||kr|�dd� P qW td| ��d S )NrJ r? r z$There is no option with the value %r)r' rA rx r� rd rG )rC r r, r* r# r# r$ rL � s zMultipleSelectOptions.addc C sj xd| j D ]N}|�d�}|d kr,|jp&d�� }||krd|jkrH|jd= n td| ��P qW td| ��d S )NrJ r? r z'The option %r is not currently selectedz%There is not option with the value %r)r' rA rx r� rf rG )rC r r, r* r# r# r$ rR � s z MultipleSelectOptions.removec C s& d| j jd�dd� | D ��| jjf S )Nz <%s {%s} for select name=%r>z, c S s g | ] }t |��qS r# )�repr)rM r� r# r# r$ rO � s z2MultipleSelectOptions.__repr__.<locals>.<listcomp>)rS r] rI r� rN )rC r# r# r$ r � s z MultipleSelectOptions.__repr__N) r] r^ r_ r` rD r� r' rV rL rR r r# r# r# r$ r" ~ s r" c @ sL e Zd ZdZedd� �Zejdd� �Zejdd� �Zedd� �Zdd � Z d S ) r a This object represents several ``<input type=radio>`` elements that have the same name. You can use this like a list, but also use the property ``.value`` to check/uncheck inputs. Also you can use ``.value_options`` to get the possible values. c C s& x | D ]}d|j kr|�d�S qW dS )zs Get/set the value, which checks the radio with that value (and unchecks any other value). r� rJ N)rf rA )rC r� r# r# r$ rJ � s zRadioGroup.valuec C sr d }|d k r:x,| D ]}|� d�|kr|}P qW td| ��x | D ]}d|jkr@|jd= q@W |d k rn|�dd� d S )NrJ z)There is no radio input with the value %rr� r? )rA rG rf rd )rC rJ r) r� r# r# r$ rJ � s c C s d | _ d S )N)rJ )rC r# r# r$ rJ � s c C s dd� | D �S )z< Returns a list of all the possible values. c S s g | ]}|� d ��qS )rJ )rA )rM r� r# r# r$ rO � s z,RadioGroup.value_options.<locals>.<listcomp>r# )rC r# r# r$ r+ � s zRadioGroup.value_optionsc C s d| j jt�| �f S )Nz%s(%s))rS r] r� r )rC r# r# r$ r � s zRadioGroup.__repr__N) r] r^ r_ r` r� rJ r� r� r+ r r# r# r# r$ r � s r c @ sL e Zd ZdZedd� �Zejdd� �Zejdd� �Zedd� �Zdd � Z d S ) r aS Represents a group of checkboxes (``<input type=checkbox>``) that have the same name. In addition to using this like a list, the ``.value`` attribute returns a set-like object that you can add to or remove from to check and uncheck checkboxes. You can also use ``.value_options`` to get the possible values. c C s t | �S )z� Return a set-like object that can be modified to check or uncheck individual checkboxes according to their value. )�CheckboxValues)rC r# r# r$ rJ � s zCheckboxGroup.valuec C s< | j }|�� t|d�s.td| d j|f ��|�|� d S )NrV z<A CheckboxGroup (name=%r) must be set to a sequence (not %r)r )rJ r( r rG rN rZ )rC rJ rX r# r# r$ rJ s c C s | j �� d S )N)rJ r( )rC r# r# r$ rJ s c C s dd� | D �S )z< Returns a list of all the possible values. c S s g | ]}|� d ��qS )rJ )rA )rM r� r# r# r$ rO s z/CheckboxGroup.value_options.<locals>.<listcomp>r# )rC r# r# r$ r+ s zCheckboxGroup.value_optionsc C s d| j jt�| �f S )Nz%s(%s))rS r] r� r )rC r# r# r$ r s zCheckboxGroup.__repr__N) r] r^ r_ r` r� rJ r� r� r+ r r# r# r# r$ r � s r c @ s8 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd S ) r. zj Represents the values of the checked checkboxes in a group of checkboxes with the same name. c C s || _ d S )N)r� )rC r� r# r# r$ rD " s zCheckboxValues.__init__c C s t dd� | jD ��S )Nc S s g | ]}d |j kr|�d��qS )r� rJ )rf rA )rM r� r# r# r$ rO ' s z+CheckboxValues.__iter__.<locals>.<listcomp>)rU r� )rC r# r# r$ rV % s zCheckboxValues.__iter__c C s< x6| j D ] }|�d�|kr|�dd� P qW td| ��d S )NrJ r� r? zNo checkbox with value %r)r� rA rd r� )rC rJ r� r# r# r$ rL + s zCheckboxValues.addc C sP xJ| j D ]4}|�d�|krd|jkr.|jd= n td| ��P qW td| ��d S )NrJ r� z0The checkbox with value %r was already uncheckedzNo checkbox with value %r)r� rA rf r� )rC rJ r� r# r# r$ rR 3 s zCheckboxValues.removec C s& d| j jd�dd� | D ��| jjf S )Nz <%s {%s} for checkboxes name=%r>z, c S s g | ] }t |��qS r# )r- )rM r� r# r# r$ rO C s z+CheckboxValues.__repr__.<locals>.<listcomp>)rS r] rI r� rN )rC r# r# r$ r @ s zCheckboxValues.__repr__N) r] r^ r_ r` rD rV rL rR r r# r# r# r$ r. s r. c @ sx e Zd ZdZedd� �Zejdd� �Zejdd� �Zedd� �Zejdd� �Zed d � �Z ed d � �Z e jd d � �Z dS )� InputElementaZ Represents an ``<input>`` element. You can get the type with ``.type`` (which is lower-cased and defaults to ``'text'``). Also you can get and set the value with ``.value`` Checkboxes and radios have the attribute ``input.checkable == True`` (for all others it is false) and a boolean attribute ``.checked``. c C s( | j r | jr| �d�pdS dS | �d�S )z� Get/set the value of this element, using the ``value`` attribute. Also, if this is a checkbox and it has no value, this defaults to ``'on'``. If it is a checkbox or radio that is not checked, this returns None. rJ �onN)r� r� rA )rC r# r# r$ rJ W s zInputElement.valuec C s@ | j r0|sd| _q<d| _t|t�r<| �d|� n | �d|� d S )NFTrJ )r� r� r6 r7 rd )rC rJ r# r# r$ rJ g s c C s$ | j rd| _nd| jkr | jd= d S )NFrJ )r� r� rf )rC r# r# r$ rJ s s c C s | � dd��� S )zM Return the type of this element (using the type attribute). r� rx )rA r� )rC r# r# r$ r� { s zInputElement.typec C s | � d|� d S )Nr� )rd )rC rJ r# r# r$ r� � s c C s | j dkS )z7 Boolean: can this element be checked? )r r )r� )rC r# r# r$ r� � s zInputElement.checkablec C s | j std��d| jkS )z� Boolean attribute to get/set the presence of the ``checked`` attribute. You can only use this on checkable input types. zNot a checkable input typer� )r� �AttributeErrorrf )rC r# r# r$ r� � s zInputElement.checkedc C s8 | j std��|r | �dd� n| j}d|kr4|d= d S )NzNot a checkable input typer� r? )r� r1 rd rf )rC rJ rf r# r# r$ r� � s N) r] r^ r_ r` r� rJ r� r� r� r� r� r# r# r# r$ r/ G s r/ r� c @ s8 e Zd ZdZedd� �Zejdd� �Zejdd� �ZdS )� LabelElementz� Represents a ``<label>`` element. Label elements are linked to other elements with their ``for`` attribute. You can access this element with ``label.for_element``. c C s | � d�}|sdS | j�|�S )zf Get/set the element this label points to. Return None if it can't be found. rs N)rA rn r� )rC rp r# r# r$ � for_element� s zLabelElement.for_elementc C s* |� d�}|std| ��| �d|� d S )Nrp z Element %r has no id attributers )rA rt rd )rC �otherrp r# r# r$ r3 � s c C s | j }d|kr|d= d S )Nrp )rf )rC rf r# r# r$ r3 � s N)r] r^ r_ r` r� r3 r� r� r# r# r# r$ r2 � s r2 rr c C s` y | � � } W n tk r Y nX dt }x0| �tj�D ] }|j}|d dkr8|| |_q8W dS )zYConvert all tags in an HTML tree to XHTML by moving them to the XHTML namespace. z{%s}r r4 N)�getrootr1 r9 rU r r r; )r� �prefixr� r; r# r# r$ � html_to_xhtml� s r7 c C s^ y | � � } W n tk r Y nX dt }t|�}x&| �|d �D ]}|j|d� |_qBW dS )zUConvert all tags in an XHTML tree to HTML by removing their XHTML namespace. z{%s}r� N)r5 r1 r9 r8 rU r; )Zxhtmlr6 � prefix_lenr� r# r# r$ � xhtml_to_html� s r9 z%<meta http-equiv="Content-Type"[^>]*>r r� c C sH t j| |||||d�}|dkrD|sDt|t�r8td|�}n tt� |�}|S )a$ Return an HTML string representation of the document. Note: if include_meta_content_type is true this will create a ``<meta http-equiv="Content-Type" ...>`` tag in the head; regardless of the value of include_meta_content_type any existing ``<meta http-equiv="Content-Type" ...>`` tag will be removed The ``encoding`` argument controls the output encoding (defaults to ASCII, with &#...; character references for any characters outside of ASCII). Note that you can pass the name ``'unicode'`` as ``encoding`` argument to serialise to a Unicode string. The ``method`` argument defines the output method. It defaults to 'html', but can also be 'xml' for xhtml output, or 'text' to serialise to plain text without markup. To leave out the tail text of the top-level element that is being serialised, pass ``with_tail=False``. The ``doctype`` option allows passing in a plain string that will be serialised before the XML tree. Note that passing in non well-formed content here will make the XML output non well-formed. Also, an existing doctype in the document tree will not be removed when serialising an ElementTree instance. Example:: >>> from lxml import html >>> root = html.fragment_fromstring('<p>Hello<br>world!</p>') >>> html.tostring(root) b'<p>Hello<br>world!</p>' >>> html.tostring(root, method='html') b'<p>Hello<br>world!</p>' >>> html.tostring(root, method='xml') b'<p>Hello<br/>world!</p>' >>> html.tostring(root, method='text') b'Helloworld!' >>> html.tostring(root, method='text', encoding='unicode') u'Helloworld!' >>> root = html.fragment_fromstring('<div><p>Hello<br>world!</p>TAIL</div>') >>> html.tostring(root[0], method='text', encoding='unicode') u'Helloworld!TAIL' >>> html.tostring(root[0], method='text', encoding='unicode', with_tail=False) u'Helloworld!' >>> doc = html.document_fromstring('<p>Hello<br>world!</p>') >>> html.tostring(doc, method='html', encoding='unicode') u'<html><body><p>Hello<br>world!</p></body></html>' >>> print(html.tostring(doc, method='html', encoding='unicode', ... doctype='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"' ... ' "http://www.w3.org/TR/html4/strict.dtd">')) <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html><body><p>Hello<br>world!</p></body></html> )r � pretty_printr- � with_tail�doctyper� r? )r r r6 r� � __str_replace_meta_content_type�!__bytes_replace_meta_content_typer0 )r� r: Zinclude_meta_content_typer- r r; r< r� r# r# r$ r � s ? c C s� ddl }ddl}ddl}t| tj�s.t�| �} |jdd�\}}|�|d�}z | j |d|pb| j j pbdd� W d|� � X d |� |jjd � }t|� |�|� dS ) z� Open the HTML document in a web browser, saving it to a temporary file to open it. Note that this does not delete the file after use. This is mainly meant for debugging. r Nz.html)�suffix�wbr� zUTF-8)r r- zfile://�/)�os� webbrowser�tempfiler6 r Z _ElementTreeZ ElementTree�mkstemp�fdopen�writerh r- �close�replace�path�sep�print�open) r� r- rB rC rD �handle�fn�fr� r# r# r$ r B s c s e Zd ZdZ� fdd�Z� ZS )� HTMLParserzOAn HTML parser that is configured to return lxml.html Element objects. c s" t t| �jf |� | �t� � d S )N)rQ rQ rD �set_element_class_lookupr� )rC �kwargs)rS r# r$ rD a s zHTMLParser.__init__)r] r^ r_ r` rD ra r# r# )rS r$ rQ ] s rQ c s e Zd ZdZ� fdd�Z� ZS )� XHTMLParsera( An XML parser that is configured to return lxml.html Element objects. Note that this parser is not really XHTML aware unless you let it load a DTD that declares the HTML entities. To do this, make sure you have the XHTML DTDs installed in your catalogs, and create the parser like this:: >>> parser = XHTMLParser(load_dtd=True) If you additionally want to validate the document, use this:: >>> parser = XHTMLParser(dtd_validation=True) For catalog support, see http://www.xmlsoft.org/catalog.html. c s" t t| �jf |� | �t� � d S )N)rQ rT rD rR r� )rC rS )rS r# r$ rD w s zXHTMLParser.__init__)r] r^ r_ r` rD ra r# r# )rS r$ rT f s rT c O s t j| |�}|S )zOCreate a new HTML Element. This can also be used for XHTML documents. )r� Z makeelement)r� r� r� r# r# r$ r | s )NF)FNN)FNN)NN)NN)NN)FFNr� TN)N)lr` � __future__r �__all__r� r r � functoolsr �collections.abcr r r � collectionsr? r r Z _setmixinr �urlparser r r. � NameErrorr� r7 r0 r% r9 r r� r# rk r� r� r� r �Ir� r� r� rq r� rF r� r, r3 r< r= r� rb r� r r r r r r r� r� Z ElementBaserc ZPIBaser� Z EntityBaser� r� r� r� r� r� r� r r r r r r� r� r� r� r r r� r� r r r r" r� r r r. r/ r2 r7 r9 r! r= r> r r rQ Z XMLParserrT r r� Z xhtml_parserr# r# r# r$ �<module> s� l $ . & 0 D t &C d =5,+^ ! I
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