a Sic<@sdZddlmZddlZddlmZmZmZddlm Z m Z m Z m Z m Z mZmZmZmZddlmZddlmZmZddlmZmZdd lmZdd lmZdd lmZm Z m!Z!m"Z"m#Z#m$Z$dd l%m&Z&e rdd l'm(Z(ddl)m*Z*m+Z+ddl,m-Z-eededddGdddZ.Gddde.Z/Gddde.Z0ddddddd d!Z1d"d#d$d%Z2d&d#d'd(Z3d)d*d+d,d,d-d.d/d0dd1d2d3ddd&d4d5d6Z4eddgd7eededddd?d)d*d+d,d,d-d.d/d0dd1d2d3ddd&d4d=d>Z5dS)@z3 :mod:`pandas.io.xml` is a module for reading XML. ) annotationsN)AnyCallableSequence) TYPE_CHECKINGCompressionOptions ConvertersArgDtypeArgFilePath ParseDatesArg ReadBufferStorageOptions XMLParsers)import_optional_dependency)AbstractMethodError ParserError)deprecate_nonkeyword_argumentsdoc) is_list_like) _shared_docs) file_exists get_handleinfer_compression is_fsspec_urlis_urlstringify_path) TextParser)Element)_Element_XSLTResultTree) DataFramestorage_optionsdecompression_optionspath_or_buffer)r!r"c@seZdZdZddddddddd d d d d dddddZddddZdddddZdddddZdddd Zddd!d"Z dd#d$d%d&Z d'S)(_XMLFrameParserab Internal subclass to parse XML into DataFrames. Parameters ---------- path_or_buffer : a valid JSON str, path object or file-like object Any valid string path is acceptable. The string could be a URL. Valid URL schemes include http, ftp, s3, and file. xpath : str or regex The XPath expression to parse required set of nodes for migration to `Data Frame`. `etree` supports limited XPath. namespaces : dict The namespaces defined in XML document (`xmlns:namespace='URI') as dicts with key being namespace and value the URI. elems_only : bool Parse only the child elements at the specified `xpath`. attrs_only : bool Parse only the attributes at the specified `xpath`. names : list Column names for Data Frame of parsed XML data. dtype : dict Data type for data or columns. E.g. {{'a': np.float64, 'b': np.int32, 'c': 'Int64'}} .. versionadded:: 1.5.0 converters : dict, optional Dict of functions for converting values in certain columns. Keys can either be integers or column labels. .. versionadded:: 1.5.0 parse_dates : bool or list of int or names or list of lists or dict Converts either index or select columns to datetimes .. versionadded:: 1.5.0 encoding : str Encoding of xml object or document. stylesheet : str or file-like URL, file, file-like object, or a raw string containing XSLT, `etree` does not support XSLT but retained for consistency. iterparse : dict, optional Dict with row element as key and list of descendant elements and/or attributes as value to be retrieved in iterparsing of XML document. .. versionadded:: 1.5.0 {decompression_options} .. versionchanged:: 1.4.0 Zstandard support. {storage_options} See also -------- pandas.io.xml._EtreeFrameParser pandas.io.xml._LxmlFrameParser Notes ----- To subclass this class effectively you must override the following methods:` * :func:`parse_data` * :func:`_parse_nodes` * :func:`_iterparse_nodes` * :func:`_parse_doc` * :func:`_validate_names` * :func:`_validate_path` See each method's respective documentation for details on their functionality. .FilePath | ReadBuffer[bytes] | ReadBuffer[str]strdict[str, str] | NoneboolSequence[str] | NoneDtypeArg | NoneConvertersArg | NoneParseDatesArg | None str | None5FilePath | ReadBuffer[bytes] | ReadBuffer[str] | Nonedict[str, list[str]] | Nonerr None)r#xpath namespaces elems_only attrs_onlynamesdtype converters parse_datesencoding stylesheet iterparse compressionr!returncCs^||_||_||_||_||_||_||_||_| |_| |_ | |_ | |_ d|_ | |_ ||_dSN)r#r1r2r3r4r5r6r7r8r9r:r;Zis_styler<r!)selfr#r1r2r3r4r5r6r7r8r9r:r;r<r!r@I/var/www/html/django/DPS/env/lib/python3.9/site-packages/pandas/io/xml.py__init__sz_XMLFrameParser.__init__list[dict[str, str | None]]r=cCs t|dS)z Parse xml data. This method will call the other internal methods to validate xpath, names, parse and return specific nodes. Nrr?r@r@rA parse_datasz_XMLFrameParser.parse_dataz list[Any])elemsr=csjrjrtdnnjrFjr6fdd|D}qdd|D}n>jr\dd|D}n(jrvfdd|D}ndd|D}dd|D}ttd d|Dfd d|D}jrԇfd d|D}|S) a= Parse xml nodes. This method will parse the children and attributes of elements in xpath, conditionally for only elements, only attributes or both while optionally renaming node names. Raises ------ ValueError * If only elements and only attributes are specified. Notes ----- Namespace URIs will be removed from return node values. Also, elements with missing children or attributes compared to siblings will have optional keys filled with None values. z4Either element or attributes can be parsed not both.c sPg|]H}i|jr*|js*|j|jiniddtj|dDqS)cSs&i|]\}}||jr|jndqSr>textstrip.0nmchr@r@rA s;_XMLFrameParser._parse_nodes...*)rJisspacetagrKzipr5findallrMelrFr@rA s z0_XMLFrameParser._parse_nodes..cSs g|]}dd|dDqS)cSs$i|]}|j|jr|jndqSr>rTrJrKrMrOr@r@rArPsrQrR)rVrWr@r@rArYscSs g|]}dd|jDqS)cSs"i|]\}}||r|ndqSr>)rKrMkvr@r@rArPrQ)attribitemsrWr@r@rArYsc sVg|]N}i|j|jr0|js0|j|jiniddtj|dDqS)cSs&i|]\}}||jr|jndqSr>rIrLr@r@rArPsrQrR)r`rJrSrTrKrUr5rVrWrFr@rArYs cSsNg|]F}i|j|jr0|js0|j|jinidd|dDqS)cSs$i|]}|j|jr|jndqSr>rZr[r@r@rArPsrQrR)r`rJrSrTrKrVrWr@r@rArY s cSsg|]}dd|DqS)cSs,i|]$\}}d|vr"|ddn||qS)})splitr\r@r@rArPr_rQ)rarMdr@r@rArYscSsg|]}|D]}|qqSr@keysrMrfr]r@r@rArYr_csg|]fddDqS)cs&i|]}||vr|ndqSr>rgrMr]rfr@rArPr_rQr@rMrgrkrArYr_cs&g|]}ddtj|DqS)cSsi|]\}}||qSr@r@rMrNr^r@r@rArP!r_rQrUr5valuesrerFr@rArY!r_)r3r4 ValueErrorr5listdictfromkeys)r?rHdictsr@rhr?rA _parse_nodess:     z_XMLFrameParser._parse_nodesr)r;r=c sg}d}tjts*ttjjdjrBttjnd}t j|slttj|dtj t rt j st j sj dstj ddurtd|j dd D]\}}d |jvr|jd d n|j}|d kr||kri}|durjrtj|jD]\}} ||krj|jrD|jnd} || | krj| |vrj| || <||jvr |j||vr | |vr |j||| <q nPj|D]D}||kr|jr|jnd||<||jvr|j|||<q|d kr||kr"|dur"||d}|t|dr|dur|dur|d=q4q|gkrntdtt dd|Dfdd|D}jrfdd|D}|S)a Iterparse xml nodes. This method will read in local disk, decompressed XML files for elements and underlying descendants using iterparse, a method to iterate through an XML tree without holding entire XML tree in memory. Raises ------ TypeError * If `iterparse` is not a dict or its dict value is not list-like. ParserError * If `path_or_buffer` is not a physical, decompressed file on disk. * If no data is returned from selected items in `iterparse`. Notes ----- Namespace URIs will be removed from return node values. Also, elements with missing children or attributes in submitted list will have optional keys filled with None values. Nz" is not a valid type for iterparsez+ is not a valid type for value in iterparsez.csg|]fddDqS)cs&i|]}||vr|ndqSr>rgrjrkr@rArPr_?_XMLFrameParser._iterparse_nodes...r@rlrgrkrArYr_cs&g|]}ddtj|DqS)cSsi|]\}}||qSr@r@rmr@r@rArPr_rrnrerFr@rArYr_)! isinstancer;rr TypeErrortype__name__nextiterrhrr#r&rr startswithrrrTrdr5rUrJrKgetr`roappendclearhasattrr~ getparentrqrs) r?r;rtrowZrow_nodeeventelemZ curr_elemcolrNZelem_valr@rurA_iterparse_nodes%s|              z _XMLFrameParser._iterparse_nodescCs t|dS)a& Validate xpath. This method checks for syntax, evaluation, or empty nodes return. Raises ------ SyntaxError * If xpah is not supported or issues with namespaces. ValueError * If xpah does not return any nodes. NrErFr@r@rA_validate_pathsz_XMLFrameParser._validate_pathcCs t|dS)z Validate names. This method will check if names is a list-like and aligns with length of parse nodes. Raises ------ ValueError * If value is not a list and less then length of nodes. NrErFr@r@rA_validate_namess z_XMLFrameParser._validate_nameszElement | _Elementraw_docr=cCs t|dS)z Build tree from path_or_buffer. This method will parse XML object into tree either from string/bytes or file location. NrE)r?rr@r@rA _parse_docs z_XMLFrameParser._parse_docN) r __module__ __qualname____doc__rBrGrvrrrrr@r@r@rAr$<sS*! far$c@sJeZdZdZddddZddddZddd d Zd d d ddZdS)_EtreeFrameParserz Internal class to parse XML into DataFrames with the Python standard library XML module: `xml.etree.ElementTree`. rCrDcCs|ddlm}|jdurtd|jdurR||j|_||jj|j |j d}| |jdurn| |n| |}|S)Nrr;zBTo use stylesheet, you need lxml installed and selected as parser.r2)xml.etree.ElementTreer;r:rprr#xml_docrrVr1r2rrvrr?r;rHZ xml_dictsr@r@rArGs    z_EtreeFrameParser.parse_datar0c Csxd}zP|jj|j|jd}|dur*t||durR|ddurR|jdurRt|WnttfyrtdYn0dS)z Notes ----- `etree` supports limited XPath. If user attempts a more complex expression syntax error will raise. zxpath does not return any nodes. If document uses namespaces denoted with xmlns, be sure to define namespaces and use them in xpath.rNrRzxYou have used an incorrect or unsupported XPath expression for etree library or you used an undeclared namespace prefix.)rfindr1r2rpr`KeyError SyntaxError)r?msgrHr@r@rArs   z _EtreeFrameParser._validate_pathcCs|jr|jr"|jtt|j}n&|jj|j|jd}|rD|dng}t |jrnt |jt |krt dnt t |jjddS)NrrR7names does not match length of child elements in xpath. is not a valid type for names)r5r;rrrrr1r2rVrlenrprrr)r?childrenparentr@r@rArs z!_EtreeFrameParser._validate_namesr%rrcCsnddlm}m}t||j|j|jd}t|(}||jd}|||d}Wdn1s\0Y|S)Nr) XMLParserparsefilepath_or_bufferr9r<r!r9parser) rrrget_data_from_filepathr9r<r!preprocess_datagetroot)r?rrr handle_dataxml_data curr_parserrr@r@rArs  *z_EtreeFrameParser._parse_docN)rrrrrGrrrr@r@r@rArs rc@sXeZdZdZddddZddddZddd d Zd d d ddZddddZdS)_LxmlFrameParserz Internal class to parse XML into DataFrames with third-party full-featured XML library, `lxml`, that supports XPath 1.0 and XSLT 1.0. rCrDcCsddlm}|jdur^||j|_|jrB||j|_||_||jj |j |j d}| |jdurz| |n| |}|S)z Parse xml data. This method will call the other internal methods to validate xpath, names, optionally parse and run XSLT, and parse original or transformed XML and return specific nodes. rrNr) lxml.etreer;rr#rr:xsl_doc_transform_docrr1r2rrvrrr@r@rArGs    z_LxmlFrameParser.parse_datar0cCs|d}|jj|j|jd}|jj|jd|jd}|jj|jd|jd}|gkrXt||gkrx|gkrx|gkrxt|dS)Nzxpath does not return any nodes. Be sure row level nodes are in xpath. If document uses namespaces denoted with xmlns, be sure to define namespaces and use them in xpath.rz/*z/@*)rr1r2rp)r?rrHrattrsr@r@rAr:sz_LxmlFrameParser._validate_pathcCsz|jrv|jr"|jtt|j}n|jj|jd|jd}t|jr`t|jt|krvt dnt t |jj ddS)Nz[1]/*rrr) r5r;rrrr1r2rrrprrr)r?rr@r@rArNs  z _LxmlFrameParser._validate_namesr%rrc Csddlm}m}m}t||j|j|jd}t|`}||jd}t |t j rx|jdur^t d|| |j|d}n |||d}Wdn1s0Y|S)Nr)r fromstringrrrz2Can not pass encoding None when input is StringIO.r)rrrrrr9r<r!rrioStringIOrgetvalueencode) r?rrrrrrrrr@r@rArcs&    *z_LxmlFrameParser._parse_docrcCs$ddlm}||j}||j}|S)z Transform original tree using stylesheet. This method will transform original xml using XSLT script into am ideally flatter xml document for easier parsing and migration to Data Frame. r)XSLT)rrrr)r?r transformerZnew_docr@r@rArs   z_LxmlFrameParser._transform_docN) rrrrrGrrrrr@r@r@rArs !rz6FilePath | bytes | ReadBuffer[bytes] | ReadBuffer[str]r-rr z1str | bytes | ReadBuffer[bytes] | ReadBuffer[str])rr9r<r!r=cCst|tst|}t|tr|dst|trHt|sHt|sHt|rt|d|||d,}t |j drr|j n|j }Wdn1s0Y|S)aG Extract raw XML data. The method accepts three input types: 1. filepath (string-like) 2. file-like object (e.g. open file object, StringIO) 3. XML string or bytes This method turns (1) into (2) to simplify the rest of the processing. It returns input types (2) and (3) unchanged. rxr)r9r<r!readN) rbytesrr&rrrrrrhandler)rr9r<r!Z handle_objr@r@rArs6    rzio.StringIO | io.BytesIOrDcCs.t|trt|}nt|tr*t|}|S)z Convert extracted raw data. This method will return underlying data of extracted XML content. The data either has a `read` attribute (e.g. a file object or a StringIO/BytesIO) or is a string or bytes that is an XML document. )rr&rrrBytesIO)datar@r@rArs    rr cKs|tt|}dd|D}zBt|fd|i|}|WdWS1sP0YWntyvtdYn0dS)z Convert parsed data to Data Frame. This method will bind xml dictionary data of keys and values into named columns of Data Frame using the built-in TextParser class that build Data Frame and infers specific dtypes. cSsg|]}t|qSr@)rqrorer@r@rArYr_z"_data_to_frame..r5NzqXML document may be too complex for import. Try to flatten document and use distinct element and attribute names.)rrrrr)rkwargstagsnodestpr@r@rA_data_to_frames , rr%r&r'r(r)r*r+r,rr.r/)r#r1r2r3r4r5r6r7r8r9rr:r;r<r!r=cKs| dkrJtddd}|dur@t|||||||||| | | | |}q~tdn4| dkrvt|||||||||| | | | |}ntd|}tf||||d |S) a Call internal parsers. This method will conditionally call internal parsers: LxmlFrameParser and/or EtreeParser. Raises ------ ImportError * If lxml is not installed if selected as parser. ValueError * If parser is not lxml or etree. lxmlz lxml.etreeignore)errorsNz7lxml not found, please install or use the etree parser.etreez,Values for parser can only be lxml or etree.)rr6r7r8)rr ImportErrorrrprGr)r#r1r2r3r4r5r6r7r8r9rr:r;r<r!rrpZ data_dictsr@r@rA_parses^#  r)version allowed_args./*Futf-8rrzcCs&t|||||||||| | | | | |dS)a Read XML document into a ``DataFrame`` object. .. versionadded:: 1.3.0 Parameters ---------- path_or_buffer : str, path object, or file-like object String, path object (implementing ``os.PathLike[str]``), or file-like object implementing a ``read()`` function. The string can be any valid XML string or a path. The string can further be a URL. Valid URL schemes include http, ftp, s3, and file. xpath : str, optional, default './\*' The XPath to parse required set of nodes for migration to DataFrame. XPath should return a collection of elements and not a single element. Note: The ``etree`` parser supports limited XPath expressions. For more complex XPath, use ``lxml`` which requires installation. namespaces : dict, optional The namespaces defined in XML document as dicts with key being namespace prefix and value the URI. There is no need to include all namespaces in XML, only the ones used in ``xpath`` expression. Note: if XML document uses default namespace denoted as `xmlns=''` without a prefix, you must assign any temporary namespace prefix such as 'doc' to the URI in order to parse underlying nodes and/or attributes. For example, :: namespaces = {{"doc": "https://example.com"}} elems_only : bool, optional, default False Parse only the child elements at the specified ``xpath``. By default, all child elements and non-empty text nodes are returned. attrs_only : bool, optional, default False Parse only the attributes at the specified ``xpath``. By default, all attributes are returned. names : list-like, optional Column names for DataFrame of parsed XML data. Use this parameter to rename original element names and distinguish same named elements and attributes. dtype : Type name or dict of column -> type, optional Data type for data or columns. E.g. {{'a': np.float64, 'b': np.int32, 'c': 'Int64'}} Use `str` or `object` together with suitable `na_values` settings to preserve and not interpret dtype. If converters are specified, they will be applied INSTEAD of dtype conversion. .. versionadded:: 1.5.0 converters : dict, optional Dict of functions for converting values in certain columns. Keys can either be integers or column labels. .. versionadded:: 1.5.0 parse_dates : bool or list of int or names or list of lists or dict, default False Identifiers to parse index or columns to datetime. The behavior is as follows: * boolean. If True -> try parsing the index. * list of int or names. e.g. If [1, 2, 3] -> try parsing columns 1, 2, 3 each as a separate date column. * list of lists. e.g. If [[1, 3]] -> combine columns 1 and 3 and parse as a single date column. * dict, e.g. {{'foo' : [1, 3]}} -> parse columns 1, 3 as date and call result 'foo' .. versionadded:: 1.5.0 encoding : str, optional, default 'utf-8' Encoding of XML document. parser : {{'lxml','etree'}}, default 'lxml' Parser module to use for retrieval of data. Only 'lxml' and 'etree' are supported. With 'lxml' more complex XPath searches and ability to use XSLT stylesheet are supported. stylesheet : str, path object or file-like object A URL, file-like object, or a raw string containing an XSLT script. This stylesheet should flatten complex, deeply nested XML documents for easier parsing. To use this feature you must have ``lxml`` module installed and specify 'lxml' as ``parser``. The ``xpath`` must reference nodes of transformed XML document generated after XSLT transformation and not the original XML document. Only XSLT 1.0 scripts and not later versions is currently supported. iterparse : dict, optional The nodes or attributes to retrieve in iterparsing of XML document as a dict with key being the name of repeating element and value being list of elements or attribute names that are descendants of the repeated element. Note: If this option is used, it will replace ``xpath`` parsing and unlike xpath, descendants do not need to relate to each other but can exist any where in document under the repeating element. This memory- efficient method should be used for very large XML files (500MB, 1GB, or 5GB+). For example, :: iterparse = {{"row_element": ["child_elem", "attr", "grandchild_elem"]}} .. versionadded:: 1.5.0 {decompression_options} .. versionchanged:: 1.4.0 Zstandard support. {storage_options} Returns ------- df A DataFrame. See Also -------- read_json : Convert a JSON string to pandas object. read_html : Read HTML tables into a list of DataFrame objects. Notes ----- This method is best designed to import shallow XML documents in following format which is the ideal fit for the two-dimensions of a ``DataFrame`` (row by column). :: data data data ... ... ... As a file format, XML documents can be designed any way including layout of elements and attributes as long as it conforms to W3C specifications. Therefore, this method is a convenience handler for a specific flatter design and not all possible XML structures. However, for more complex XML documents, ``stylesheet`` allows you to temporarily redesign original document with XSLT (a special purpose language) for a flatter version for migration to a DataFrame. This function will *always* return a single :class:`DataFrame` or raise exceptions due to issues with XML document, ``xpath``, or other parameters. See the :ref:`read_xml documentation in the IO section of the docs ` for more information in using this method to parse XML files to DataFrames. Examples -------- >>> xml = ''' ... ... ... square ... 360 ... 4.0 ... ... ... circle ... 360 ... ... ... ... triangle ... 180 ... 3.0 ... ... ''' >>> df = pd.read_xml(xml) >>> df shape degrees sides 0 square 360 4.0 1 circle 360 NaN 2 triangle 180 3.0 >>> xml = ''' ... ... ... ... ... ''' >>> df = pd.read_xml(xml, xpath=".//row") >>> df shape degrees sides 0 square 360 4.0 1 circle 360 NaN 2 triangle 180 3.0 >>> xml = ''' ... ... ... square ... 360 ... 4.0 ... ... ... circle ... 360 ... ... ... ... triangle ... 180 ... 3.0 ... ... ''' >>> df = pd.read_xml(xml, ... xpath="//doc:row", ... namespaces={{"doc": "https://example.com"}}) >>> df shape degrees sides 0 square 360 4.0 1 circle 360 NaN 2 triangle 180 3.0 r#r1r2r3r4r5r6r7r8r9rr:r;r<r!)rrr@r@rAread_xmlFs${r)rNFFNNNNrrNNrzN)6r __future__rrtypingrrrpandas._typingrrrr r r r r rpandas.compat._optionalr pandas.errorsrrpandas.util._decoratorsrrpandas.core.dtypes.commonrpandas.core.shared_docsrpandas.io.commonrrrrrrpandas.io.parsersrrrrrrpandasr r$rrrrrrrr@r@r@rAs` ,        sd0,Y