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pandas.DataFrame.to_xml — pandas 2.3.1 documentation

pandas.DataFrame.to_xml#

DataFrame.to_xml(path_or_buffer=None, *, index=True, root_name='data', row_name='row', na_rep=None, attr_cols=None, elem_cols=None, namespaces=None, prefix=None, encoding='utf-8', xml_declaration=True, pretty_print=True, parser='lxml', stylesheet=None, compression='infer', storage_options=None)[source]#

Render a DataFrame to an XML document.

Added in version 1.3.0.

Parameters:

path_or_bufferstr, path object, file-like object, or None, default None

String, path object (implementing os.PathLike[str]), or file-like object implementing a write() function. If None, the result is returned as a string.

indexbool, default True

Whether to include index in XML document.

root_namestr, default âdataâ

The name of root element in XML document.

row_namestr, default ârowâ

The name of row element in XML document.

na_repstr, optional

Missing data representation.

attr_colslist-like, optional

List of columns to write as attributes in row element. Hierarchical columns will be flattened with underscore delimiting the different levels.

elem_colslist-like, optional

List of columns to write as children in row element. By default, all columns output as children of row element. Hierarchical columns will be flattened with underscore delimiting the different levels.

namespacesdict, optional

All namespaces to be defined in root element. Keys of dict should be prefix names and values of dict corresponding URIs. Default namespaces should be given empty string key. For example,

namespaces = {"": "https://example.com"}

prefixstr, optional

Namespace prefix to be used for every element and/or attribute in document. This should be one of the keys in namespaces dict.

encodingstr, default âutf-8â

Encoding of the resulting document.

xml_declarationbool, default True

Whether to include the XML declaration at start of document.

pretty_printbool, default True

Whether output should be pretty printed with indentation and line breaks.

parser{âlxmlâ,âetreeâ}, default âlxmlâ

Parser module to use for building of tree. Only âlxmlâ and âetreeâ are supported. With âlxmlâ, the ability to use XSLT stylesheet is supported.

stylesheetstr, path object or file-like object, optional

A URL, file-like object, or a raw string containing an XSLT script used to transform the raw XML output. Script should use layout of elements and attributes from original output. This argument requires lxml to be installed. Only XSLT 1.0 scripts and not later versions is currently supported.

compressionstr or dict, default âinferâ

For on-the-fly compression of the output data. If âinferâ and âpath_or_bufferâ is path-like, then detect compression from the following extensions: â.gzâ, â.bz2â, â.zipâ, â.xzâ, â.zstâ, â.tarâ, â.tar.gzâ, â.tar.xzâ or â.tar.bz2â (otherwise no compression). Set to None for no compression. Can also be a dict with key 'method' set to one of {'zip', 'gzip', 'bz2', 'zstd', 'xz', 'tar'} and other key-value pairs are forwarded to zipfile.ZipFile, gzip.GzipFile, bz2.BZ2File, zstandard.ZstdCompressor, lzma.LZMAFile or tarfile.TarFile, respectively. As an example, the following could be passed for faster compression and to create a reproducible gzip archive: compression={'method': 'gzip', 'compresslevel': 1, 'mtime': 1}.

Added in version 1.5.0: Added support for .tar files.

Changed in version 1.4.0: Zstandard support.

storage_optionsdict, optional

Extra options that make sense for a particular storage connection, e.g. host, port, username, password, etc. For HTTP(S) URLs the key-value pairs are forwarded to urllib.request.Request as header options. For other URLs (e.g. starting with âs3://â, and âgcs://â) the key-value pairs are forwarded to fsspec.open. Please see fsspec and urllib for more details, and for more examples on storage options refer here.

Returns:

None or str: If io is None, returns the resulting XML format as a string. Otherwise returns None.

See also

to_json: Convert the pandas object to a JSON string.
to_html: Convert DataFrame to a html.

Examples

>>> df = pd.DataFrame({'shape': ['square', 'circle', 'triangle'],
...                    'degrees': [360, 360, 180],
...                    'sides': [4, np.nan, 3]})

>>> df.to_xml()  
<?xml version='1.0' encoding='utf-8'?>
<data>
  <row>
    <index>0</index>
    <shape>square</shape>
    <degrees>360</degrees>
    <sides>4.0</sides>
  </row>
  <row>
    <index>1</index>
    <shape>circle</shape>
    <degrees>360</degrees>
    <sides/>
  </row>
  <row>
    <index>2</index>
    <shape>triangle</shape>
    <degrees>180</degrees>
    <sides>3.0</sides>
  </row>
</data>

>>> df.to_xml(attr_cols=[
...           'index', 'shape', 'degrees', 'sides'
...           ])  
<?xml version='1.0' encoding='utf-8'?>
<data>
  <row index="0" shape="square" degrees="360" sides="4.0"/>
  <row index="1" shape="circle" degrees="360"/>
  <row index="2" shape="triangle" degrees="180" sides="3.0"/>
</data>

>>> df.to_xml(namespaces={"doc": "https://example.com"},
...           prefix="doc")  
<?xml version='1.0' encoding='utf-8'?>
<doc:data xmlns:doc="https://example.com">
  <doc:row>
    <doc:index>0</doc:index>
    <doc:shape>square</doc:shape>
    <doc:degrees>360</doc:degrees>
    <doc:sides>4.0</doc:sides>
  </doc:row>
  <doc:row>
    <doc:index>1</doc:index>
    <doc:shape>circle</doc:shape>
    <doc:degrees>360</doc:degrees>
    <doc:sides/>
  </doc:row>
  <doc:row>
    <doc:index>2</doc:index>
    <doc:shape>triangle</doc:shape>
    <doc:degrees>180</doc:degrees>
    <doc:sides>3.0</doc:sides>
  </doc:row>
</doc:data>

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