Last round of adapting style of documenting argument default values.
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index 939af6e..0d3f61c 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -1,4 +1,3 @@
-
:mod:`xml.etree.ElementTree` --- The ElementTree XML API
========================================================
@@ -41,7 +40,7 @@
---------
-.. function:: Comment([text])
+.. function:: Comment(text=None)
Comment element factory. This factory function creates a special element
that will be serialized as an XML comment. The comment string can be either
@@ -61,7 +60,7 @@
*elem* is an element tree or an individual element.
-.. function:: Element(tag[, attrib][, **extra])
+.. function:: Element(tag, attrib={}, **extra)
Element factory. This function returns an object implementing the standard
Element interface. The exact class or type of that object is implementation
@@ -87,7 +86,7 @@
element instance. Returns a true value if this is an element object.
-.. function:: iterparse(source[, events])
+.. function:: iterparse(source, events=None)
Parses an XML section into an element tree incrementally, and reports what's
going on to the user. *source* is a filename or file object containing XML data.
@@ -105,7 +104,7 @@
If you need a fully populated element, look for "end" events instead.
-.. function:: parse(source[, parser])
+.. function:: parse(source, parser=None)
Parses an XML section into an element tree. *source* is a filename or file
object containing XML data. *parser* is an optional parser instance. If not
@@ -113,7 +112,7 @@
instance.
-.. function:: ProcessingInstruction(target[, text])
+.. function:: ProcessingInstruction(target, text=None)
PI element factory. This factory function creates a special element that will
be serialized as an XML processing instruction. *target* is a string containing
@@ -121,7 +120,7 @@
an element instance, representing a processing instruction.
-.. function:: SubElement(parent, tag[, attrib[, **extra]])
+.. function:: SubElement(parent, tag, attrib={}, **extra)
Subelement factory. This function creates an element instance, and appends it
to an existing element.
@@ -133,7 +132,7 @@
as keyword arguments. Returns an element instance.
-.. function:: tostring(element[, encoding])
+.. function:: tostring(element, encoding=None)
Generates a string representation of an XML element, including all subelements.
*element* is an Element instance. *encoding* is the output encoding (default is
@@ -202,7 +201,7 @@
attributes, and sets the text and tail attributes to None.
-.. method:: Element.get(key[, default=None])
+.. method:: Element.get(key, default=None)
Gets the element attribute named *key*.
@@ -246,7 +245,7 @@
Returns an iterable yielding all matching elements in document order.
-.. method:: Element.findtext(condition[, default=None])
+.. method:: Element.findtext(condition, default=None)
Finds text for the first subelement matching *condition*. *condition* may be a
tag name or path. Returns the text content of the first matching element, or
@@ -259,7 +258,7 @@
Returns all subelements. The elements are returned in document order.
-.. method:: Element.getiterator([tag=None])
+.. method:: Element.getiterator(tag=None)
Creates a tree iterator with the current element as the root. The iterator
iterates over this element and all elements below it, in document (depth first)
@@ -305,7 +304,7 @@
-------------------
-.. class:: ElementTree([element,] [file])
+.. class:: ElementTree(element=None, file=None)
ElementTree wrapper class. This class represents an entire element hierarchy,
and adds some extra support for serialization to and from standard XML.
@@ -336,7 +335,7 @@
order.
- .. method:: findtext(path[, default])
+ .. method:: findtext(path, default=None)
Finds the element text for the first toplevel element with given tag.
Same as getroot().findtext(path). *path* is the toplevel element to look
@@ -346,7 +345,7 @@
found, but has no text content, this method returns an empty string.
- .. method:: getiterator([tag])
+ .. method:: getiterator(tag=None)
Creates and returns a tree iterator for the root element. The iterator
loops over all elements in this tree, in section order. *tag* is the tag
@@ -358,7 +357,7 @@
Returns the root element for this tree.
- .. method:: parse(source[, parser])
+ .. method:: parse(source, parser=None)
Loads an external XML section into this element tree. *source* is a file
name or file object. *parser* is an optional parser instance. If not
@@ -366,7 +365,7 @@
root element.
- .. method:: write(file[, encoding])
+ .. method:: write(file, encoding=None)
Writes the element tree to a file, as XML. *file* is a file name, or a
file object opened for writing. *encoding* [1]_ is the output encoding
@@ -406,7 +405,7 @@
-------------
-.. class:: QName(text_or_uri[, tag])
+.. class:: QName(text_or_uri, tag=None)
QName wrapper. This can be used to wrap a QName attribute value, in order to
get proper namespace handling on output. *text_or_uri* is a string containing
@@ -422,7 +421,7 @@
-------------------
-.. class:: TreeBuilder([element_factory])
+.. class:: TreeBuilder(element_factory=None)
Generic element structure builder. This builder converts a sequence of start,
data, and end method calls to a well-formed element structure. You can use this
@@ -461,7 +460,7 @@
----------------------
-.. class:: XMLTreeBuilder([html,] [target])
+.. class:: XMLTreeBuilder(html=0, target=None)
Element structure builder for XML source data, based on the expat parser. *html*
are predefined HTML entities. This flag is not supported by the current