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�rB Y nX dS )ia Lightweight XML support for Python.
XML is an inherently hierarchical data format, and the most natural way to
represent it is with a tree. This module has two classes for this purpose:
1. ElementTree represents the whole XML document as a tree and
2. Element represents a single node in this tree.
Interactions with the whole document (reading and writing to/from files) are
usually done on the ElementTree level. Interactions with a single XML element
and its sub-elements are done on the Element level.
Element is a flexible container object designed to store hierarchical data
structures in memory. It can be described as a cross between a list and a
dictionary. Each Element has a number of properties associated with it:
'tag' - a string containing the element's name.
'attributes' - a Python dictionary storing the element's attributes.
'text' - a string containing the element's text content.
'tail' - an optional string containing text after the element's end tag.
And a number of child elements stored in a Python sequence.
To create an element instance, use the Element constructor,
or the SubElement factory function.
You can also use the ElementTree class to wrap an element structure
and convert it to and from XML.
�Comment�dump�Element� ElementTree�
fromstring�fromstringlist� iselement� iterparse�parse�
ParseError�PI�ProcessingInstruction�QName�
SubElement�tostring� tostringlist� TreeBuilder�VERSION�XML�XMLID� XMLParser�
XMLPullParser�register_namespacez1.3.0� N� )� ElementPathc @ s e Zd ZdZdS )r
z�An error when parsing an XML document.
In addition to its exception value, a ParseError contains
two extra attributes:
'code' - the specific exception code
'position' - the line and column of the error
N)�__name__�
__module__� __qualname__�__doc__� r r �-/usr/lib64/python3.6/xml/etree/ElementTree.pyr
h s c C s
t | d�S )z2Return True if *element* appears to be an Element.�tag)�hasattr)�elementr r r r v s c @ s
e Zd ZdZdZdZdZdZi fdd�Zdd� Z dd� Z
d d
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d� Z
dd� Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd d � Zd d � Zd9d!d"�Zd:d#d$�Zd;d%d&�Zd<d'd(�Zd)d*� Zd=d+d,�Z d-d.� Z d/d0� Z d1d2� Z d>d3d4�Z d?d5d6�Z!d7d8� Z"dS )@r ah An XML element.
This class is the reference implementation of the Element interface.
An element's length is its number of subelements. That means if you
want to check if an element is truly empty, you should check BOTH
its length AND its text attribute.
The element tag, attribute names, and attribute values can be either
bytes or strings.
*tag* is the element name. *attrib* is an optional dictionary containing
element attributes. *extra* are additional element attributes given as
keyword arguments.
Example form:
<tag attrib>text<child/>...</tag>tail
Nc K sD t |t�s td|jjf ��|j� }|j|� || _|| _g | _ d S )Nzattrib must be dict, not %s)
�
isinstance�dict� TypeError� __class__r �copy�updater! �attrib� _children)�selfr! r* �extrar r r �__init__� s
zElement.__init__c C s d| j j| jt| �f S )Nz<%s %r at %#x>)r' r r! �id)r, r r r �__repr__� s zElement.__repr__c C s | j ||�S )z�Create a new element with the same type.
*tag* is a string containing the element name.
*attrib* is a dictionary containing the element attributes.
Do not call this method, use the SubElement factory function instead.
)r' )r, r! r* r r r � makeelement� s zElement.makeelementc C s0 | j | j| j�}| j|_| j|_| |dd�< |S )z�Return copy of current element.
This creates a shallow copy. Subelements will be shared with the
original tree.
N)r1 r! r* �text�tail)r, �elemr r r r( � s
z Element.copyc C s
t | j�S )N)�lenr+ )r, r r r �__len__� s zElement.__len__c C s t jdtdd� t| j�dkS )NzyThe behavior of this method will change in future versions. Use specific 'len(elem)' or 'elem is not None' test instead.� )�
stacklevelr )�warnings�warn�
FutureWarningr5 r+ )r, r r r �__bool__� s
zElement.__bool__c C s
| j | S )N)r+ )r, �indexr r r � __getitem__� s zElement.__getitem__c C s || j |< d S )N)r+ )r, r= r# r r r � __setitem__� s zElement.__setitem__c C s | j |= d S )N)r+ )r, r= r r r � __delitem__� s zElement.__delitem__c C s | j |� | jj|� dS )a Add *subelement* to the end of this element.
The new element will appear in document order after the last existing
subelement (or directly after the text, if it's the first subelement),
but before the end tag for this element.
N)�_assert_is_elementr+ �append)r, �
subelementr r r rB � s
zElement.appendc C s( x|D ]}| j |� qW | jj|� dS )zkAppend subelements from a sequence.
*elements* is a sequence with zero or more elements.
N)rA r+ �extend)r, �elementsr# r r r rD � s
zElement.extendc C s | j |� | jj||� dS )z(Insert *subelement* at position *index*.N)rA r+ �insert)r, r= rC r r r rF � s
zElement.insertc C s t |t�s tdt|�j ��d S )Nzexpected an Element, not %s)r$ � _Element_Pyr& �typer )r, �er r r rA � s
zElement._assert_is_elementc C s | j j|� dS )a� Remove matching subelement.
Unlike the find methods, this method compares elements based on
identity, NOT ON tag value or contents. To remove subelements by
other means, the easiest way is to use a list comprehension to
select what elements to keep, and then use slice assignment to update
the parent element.
ValueError is raised if a matching element could not be found.
N)r+ �remove)r, rC r r r rJ s
zElement.removec C s t jdtdd� | jS )z`(Deprecated) Return all subelements.
Elements are returned in document order.
zaThis method will be removed in future versions. Use 'list(elem)' or iteration over elem instead.r7 )r8 )r9 r: �DeprecationWarningr+ )r, r r r � getchildren s
zElement.getchildrenc C s t j| ||�S )a Find first matching element by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return the first matching element, or None if no element was found.
)r �find)r, �path�
namespacesr r r rM ! s z Element.findc C s t j| |||�S )a� Find text for first matching element by tag name or path.
*path* is a string having either an element tag or an XPath,
*default* is the value to return if the element was not found,
*namespaces* is an optional mapping from namespace prefix to full name.
Return text content of first matching element, or default value if
none was found. Note that if an element is found having no text
content, the empty string is returned.
)r �findtext)r, rN �defaultrO r r r rP , s zElement.findtextc C s t j| ||�S )a Find all matching subelements by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Returns list containing all matching elements in document order.
)r �findall)r, rN rO r r r rR : s zElement.findallc C s t j| ||�S )a Find all matching subelements by tag name or path.
*path* is a string having either an element tag or an XPath,
*namespaces* is an optional mapping from namespace prefix to full name.
Return an iterable yielding all matching elements in document order.
)r �iterfind)r, rN rO r r r rS E s zElement.iterfindc C s | j j� g | _d | _| _dS )z�Reset element.
This function removes all subelements, clears all attributes, and sets
the text and tail attributes to None.
N)r* �clearr+ r2 r3 )r, r r r rT P s
z
Element.clearc C s | j j||�S )ag Get element attribute.
Equivalent to attrib.get, but some implementations may handle this a
bit more efficiently. *key* is what attribute to look for, and
*default* is what to return if the attribute was not found.
Returns a string containing the attribute value, or the default if
attribute was not found.
)r* �get)r, �keyrQ r r r rU [ s z Element.getc C s || j |< dS )z�Set element attribute.
Equivalent to attrib[key] = value, but some implementations may handle
this a bit more efficiently. *key* is what attribute to set, and
*value* is the attribute value to set it to.
N)r* )r, rV �valuer r r �seth s z Element.setc C s
| j j� S )z�Get list of attribute names.
Names are returned in an arbitrary order, just like an ordinary
Python dict. Equivalent to attrib.keys()
)r* �keys)r, r r r rY r s z Element.keysc C s
| j j� S )z�Get element attributes as a sequence.
The attributes are returned in arbitrary order. Equivalent to
attrib.items().
Return a list of (name, value) tuples.
)r* �items)r, r r r rZ { s z
Element.itemsc c sH |dkr d}|dks | j |kr$| V x | jD ]}|j|�E dH q,W dS )a Create tree iterator.
The iterator loops over the element and all subelements in document
order, returning all elements with a matching tag.
If the tree structure is modified during iteration, new or removed
elements may or may not be included. To get a stable set, use the
list() function on the iterator, and loop over the resulting list.
*tag* is what tags to look for (default is to return all elements)
Return an iterator containing all the matching elements.
�*N)r! r+ �iter)r, r! rI r r r r\ � s z Element.iterc C s t jdtdd� t| j|��S )NzbThis method will be removed in future versions. Use 'elem.iter()' or 'list(elem.iter())' instead.r7 )r8 )r9 r: �PendingDeprecationWarning�listr\ )r, r! r r r � getiterator� s
zElement.getiteratorc c s^ | j }t|t� r |dk r dS | j}|r.|V x*| D ]"}|j� E dH |j}|r4|V q4W dS )z�Create text iterator.
The iterator loops over the element and all subelements in document
order, returning all inner text.
N)r! r$ �strr2 �itertextr3 )r, r! �trI r r r ra � s
zElement.itertext)N)NN)N)N)N)N)N)#r r r r r! r* r2 r3 r. r0 r1 r( r6 r< r> r? r@ rB rD rF rA rJ rL rM rP rR rS rT rU rX rY rZ r\ r_ ra r r r r r { s@
c K s, |j � }|j|� | j||�}| j|� |S )a� Subelement factory which creates an element instance, and appends it
to an existing parent.
The element tag, attribute names, and attribute values can be either
bytes or Unicode strings.
*parent* is the parent element, *tag* is the subelements name, *attrib* is
an optional directory containing element attributes, *extra* are
additional attributes given as keyword arguments.
)r( r) r1 rB )�parentr! r* r- r# r r r r � s
c C s t t�}| |_|S )z�Comment element factory.
This function creates a special element which the standard serializer
serializes as an XML comment.
*text* is a string containing the comment string.
)r r r2 )r2 r# r r r r � s c C s& t t�}| |_|r"|jd | |_|S )a* Processing Instruction element factory.
This function creates a special element which the standard serializer
serializes as an XML comment.
*target* is a string containing the processing instruction, *text* is a
string containing the processing instruction contents, if any.
� )r r r2 )�targetr2 r# r r r r � s
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a� Qualified name wrapper.
This class can be used to wrap a QName attribute value in order to get
proper namespace handing on output.
*text_or_uri* is a string containing the QName value either in the form
{uri}local, or if the tag argument is given, the URI part of a QName.
*tag* is an optional argument which if given, will make the first
argument (text_or_uri) be interpreted as a URI, and this argument (tag)
be interpreted as a local name.
Nc C s |rd||f }|| _ d S )Nz{%s}%s)r2 )r, Z text_or_urir! r r r r. � s zQName.__init__c C s | j S )N)r2 )r, r r r �__str__ s z
QName.__str__c C s d| j j| jf S )Nz<%s %r>)r' r r2 )r, r r r r0 s zQName.__repr__c C s
t | j�S )N)�hashr2 )r, r r r �__hash__ s zQName.__hash__c C s t |t�r| j|jkS | j|kS )N)r$ r
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d%dd�dd�Zdd � ZdS )&r a% An XML element hierarchy.
This class also provides support for serialization to and from
standard XML.
*element* is an optional root element node,
*file* is an optional file handle or file name of an XML file whose
contents will be used to initialize the tree with.
Nc C s || _ |r| j|� d S )N)�_rootr )r, r# �filer r r r. ) s zElementTree.__init__c C s | j S )z!Return root element of this tree.)ro )r, r r r �getroot/ s zElementTree.getrootc C s
|| _ dS )z�Replace root element of this tree.
This will discard the current contents of the tree and replace it
with the given element. Use with care!
N)ro )r, r# r r r �_setroot3 s zElementTree._setrootc
C s� d}t |d�s t|d�}d}zZ|dkrHt� }t |d�rH|j|�| _| jS x |jd�}|sZP |j|� qJW |j� | _| jS |r�|j� X dS )a= Load external XML document into element tree.
*source* is a file name or file object, *parser* is an optional parser
instance that defaults to XMLParser.
ParseError is raised if the parser fails to parse the document.
Returns the root element of the given source document.
F�read�rbTN� _parse_wholei )r" �openr ru ro rs �feed�close)r, �source�parser� close_source�datar r r r = s&
zElementTree.parsec C s | j j|�S )z�Create and return tree iterator for the root element.
The iterator loops over all elements in this tree, in document order.
*tag* is a string with the tag name to iterate over
(default is to return all elements).
)ro r\ )r, r! r r r r\ b s
zElementTree.iterc C s t jdtdd� t| j|��S )NzbThis method will be removed in future versions. Use 'tree.iter()' or 'list(tree.iter())' instead.r7 )r8 )r9 r: r] r^ r\ )r, r! r r r r_ o s
zElementTree.getiteratorc C s: |dd� dkr,d| }t jd| tdd� | jj||�S )a\ Find first matching element by tag name or path.
Same as getroot().find(path), which is Element.find()
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Return the first matching element, or None if no element was found.
Nr �/�.z�This search is broken in 1.3 and earlier, and will be fixed in a future version. If you rely on the current behaviour, change it to %rr7 )r8 )r9 r: r; ro rM )r, rN rO r r r rM x s
zElementTree.findc C s< |dd� dkr,d| }t jd| tdd� | jj|||�S )ae Find first matching element by tag name or path.
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*path* is a string having either an element tag or an XPath,
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Return the first matching element, or None if no element was found.
Nr r} r~ z�This search is broken in 1.3 and earlier, and will be fixed in a future version. If you rely on the current behaviour, change it to %rr7 )r8 )r9 r: r; ro rP )r, rN rQ rO r r r rP � s
zElementTree.findtextc C s: |dd� dkr,d| }t jd| tdd� | jj||�S )aa Find all matching subelements by tag name or path.
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Return list containing all matching elements in document order.
Nr r} r~ z�This search is broken in 1.3 and earlier, and will be fixed in a future version. If you rely on the current behaviour, change it to %rr7 )r8 )r9 r: r; ro rR )r, rN rO r r r rR � s
zElementTree.findallc C s: |dd� dkr,d| }t jd| tdd� | jj||�S )ag Find all matching subelements by tag name or path.
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*path* is a string having either an element tag or an XPath,
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Return an iterable yielding all matching elements in document order.
Nr r} r~ z�This search is broken in 1.3 and earlier, and will be fixed in a future version. If you rely on the current behaviour, change it to %rr7 )r8 )r9 r: r; ro rS )r, rN rO r r r rS � s
zElementTree.iterfindT)�short_empty_elementsc C s� |s
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a� Write element tree to a file as XML.
Arguments:
*file_or_filename* -- file name or a file object opened for writing
*encoding* -- the output encoding (default: US-ASCII)
*xml_declaration* -- bool indicating if an XML declaration should be
added to the output. If None, an XML declaration
is added if encoding IS NOT either of:
US-ASCII, UTF-8, or Unicode
*default_namespace* -- sets the default XML namespace (for "xmlns")
*method* -- either "xml" (default), "html, "text", or "c14n"
*short_empty_elements* -- controls the formatting of elements
that contain no content. If True (default)
they are emitted as a single self-closed
tag, otherwise they are emitted as a pair
of start/end tags
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