ntoxml([encoding])

Creates a string containing the XML represented by node n and its children encoding specifies the encoding (for example, 'utf-8') If no encoding is given, none is specified in the output text

nwritexml(writer [, indent [, addindent [, newl]]])

Writes XML to writer writer can be any object that provides a write() method that is compatible with the file interface indent specifies the indentation of n It is a string that is prepended to the start of node n in the output addindent is a string that specifies the incremental indentation to apply to child nodes of n newl specifies the newline character

The following example shows how to use the xmldomminidom module to parse and extract information from an XML file:

from xmldom import minidom doc = minidomparse("recipexml") ingredients items = docgetElementsByTagName("ingredients")[0] = ingredientsgetElementsByTagName("item")

for item in items: num = itemgetAttribute("num") units = itemgetAttribute("units") text = itemfirstChilddatastrip() quantity = "%s %s" % (num,units) print("%-10s %s" % (quantity,text))

The xmldomminidom module has many more features for changing the parse tree and working with different kinds of XML node types More information can be found in the online documentation

The xmletreeElementTree module defines a flexible container object ElementTree for storing and manipulating hierarchical data Although this object is commonly used in conjunction with XML processing, it is actually quite general-purpose serving a role that s a cross between a list and dictionary

The following class is used to define a new ElementTree object and represents the top level of a hierarchy

ElementTree([element [, file]])

Creates a new ElementTree object element is an instance representing the root node of the treeThis instance supports the element interface described next file is either a filename or a file-like object from which XML data will be read to populate the tree

An instance tree of ElementTree has the following methods:

tree_setroot(element)

treefind(path)

Finds and returns the first top-level element in the tree whose type matches the given path path is a string that describes the element type and its location relative to other elementsThe following list describes the path syntax:

'tag'

Matches only top-level elements with the given tag for example, <tag></tag> Does not match elements defined at lower levels A element of type tag embedded inside another element such as <foo><tag></tag></foo> is not matched 'parent/tag' Matches an element with tag 'tag' if it s a child of an element with tag 'parent' As many path name components can be specified as desired '*' Selects all child elements For example, '*/tag' would match all grandchild elements with a tag name of 'tag' '' Starts the search with the current node '//' Selects all subelements on all levels beneath an element For example, '//tag' matches all elements with tag 'tag' at all sublevels

If you are working with a document involving XML namespaces, the tag strings in a path should have the form '{uri}tag' where uri is a string such as 'http://wwww3org/TR/html4/'

treefindall(path)

Finds all top-level elements in the tree that match the given path and returns them in document order as a list or an iterator

treefindtext(path [, default])

Returns the element text for the first top-level element in the tree matching the given path default is a string to return if no matching element can be found

treegetiterator([tag])

Creates an iterator that produces all elements in the tree, in section order, whose tag matches tag If tag is omitted, then every element in the tree is returned in order

treegetroot()

treeparse(source [, parser])

Parses external XML data and replaces the root element with the result source is either a filename or file-like object representing XML data parser is an optional instance of TreeBuilder, which is described later