Package lxml :: Module objectify |
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# Module objectify

The `lxml.objectify` module implements a Python object API for XML. It is based on lxml.etree.

Version: 2.0.4-53745

Classes
| BoolElement Boolean type base on string values: 'true' or 'false'.
| ElementMaker ElementMaker(self, namespace=None, nsmap=None, annotate=True, makeelement=None)
| FloatElement
| IntElement
| LongElement
| NoneElement
| NumberElement
| ObjectPath ObjectPath(path) Immutable object that represents a compiled object path.
| ObjectifiedDataElement This is the base class for all data type Elements.
| ObjectifiedElement Main XML Element class.
| ObjectifyElementClassLookup ObjectifyElementClassLookup(self, tree_class=None, empty_data_class=None) Element class lookup method that uses the objectify classes.
| PyType PyType(self, name, type_check, type_class, stringify=None) User defined type.
| StringElement String data class.

Functions
DataElement(_value, attrib=None, nsmap=None, _pytype=None, _xsi=None, **_attributes) Create a new element from a Python value and XML attributes taken from keyword arguments or a dictionary passed as second argument. |
Element(_tag, attrib=None, nsmap=None, _pytype=None, **_attributes) Objectify specific version of the lxml.etree Element() factory that always creates a structural (tree) element. |
XML(xml, parser=None) Objectify specific version of the lxml.etree fromstring() function that uses the objectify parser. |
annotate(element_or_tree, ignore_old=True, ignore_xsi=False, empty_pytype=None, empty_type=None, annotate_xsi=0, annotate_pytype=1) Recursively annotates the elements of an XML tree with 'xsi:type' and/or 'py:pytype' attributes. |
deannotate(element_or_tree, pytype=True, xsi=True) Recursively de-annotate the elements of an XML tree by removing 'pytype' and/or 'type' attributes. |
dump(...) dump(_Element element not None) |
enableRecursiveStr(on=True) Enable a recursively generated tree representation for str(element), based on objectify.dump(element). |
fromstring(xml, parser=None) Objectify specific version of the lxml.etree fromstring() function that uses the objectify parser. |
getRegisteredTypes() Returns a list of the currently registered PyType objects. |
makeparser(remove_blank_text=True, **kw) Create a new XML parser for objectify trees. |
parse(f, parser=None) Parse a file or file-like object with the objectify parser. |
pyannotate(element_or_tree, ignore_old=False, ignore_xsi=False, empty_pytype=None) Recursively annotates the elements of an XML tree with 'pytype' attributes. |
pytypename(obj) Find the name of the corresponding PyType for a Python object. |
setDefaultParser(...) |
setPytypeAttributeTag(...) |
set_default_parser(new_parser= None) Replace the default parser used by objectify's Element() and fromstring() functions. |
set_pytype_attribute_tag(attribute_tag=None) Change name and namespace of the XML attribute that holds Python type information. |
xsiannotate(element_or_tree, ignore_old=False, ignore_pytype=False, empty_type=None) Recursively annotates the elements of an XML tree with 'xsi:type' attributes. |

Variables
| E = `<lxml.objectify.ElementMaker object at 0x881a70c>`
| PYTYPE_ATTRIBUTE = ``'``{http://codespeak.net/lxml/objectify/pytyp``...``

Function Details

### DataElement(_value, attrib=None, nsmap=None, _pytype=None, _xsi=None, **_attributes) |
Create a new element from a Python value and XML attributes taken from keyword arguments or a dictionary passed as second argument. Automatically adds a 'pytype' attribute for the Python type of the value, if the type can be identified. If '_pytype' or '_xsi' are among the keyword arguments, they will be used instead. If the _value argument is an ObjectifiedDataElement instance, its py:pytype, xsi:type and other attributes and nsmap are reused unless they are redefined in attrib and/or keyword arguments.

### Element(_tag, attrib=None, nsmap=None, _pytype=None, **_attributes) |
Objectify specific version of the lxml.etree Element() factory that always creates a structural (tree) element. NOTE: requires parser based element class lookup activated in lxml.etree!

### XML(xml, parser=None) |
Objectify specific version of the lxml.etree fromstring() function that uses the objectify parser. You can pass a different parser as second argument.

### annotate(element_or_tree, ignore_old=True, ignore_xsi=False, empty_pytype=None, empty_type=None, annotate_xsi=0, annotate_pytype=1) |
Recursively annotates the elements of an XML tree with 'xsi:type' and/or 'py:pytype' attributes. If the 'ignore_old' keyword argument is True (the default), current 'py:pytype' attributes will be ignored for the type annotation. Set to False if you want reuse existing 'py:pytype' information (iff appropriate for the element text value). If the 'ignore_xsi' keyword argument is False (the default), existing 'xsi:type' attributes will be used for the type annotation, if they fit the element text values. Note that the mapping from Python types to XSI types is usually ambiguous. Currently, only the first XSI type name in the corresponding PyType definition will be used for annotation. Thus, you should consider naming the widest type first if you define additional types. The default 'py:pytype' annotation of empty elements can be set with the `empty_pytype` keyword argument. Pass 'str', for example, to make string values the default. The default 'xsi:type' annotation of empty elements can be set with the `empty_type` keyword argument. The default is not to annotate empty elements. Pass 'string', for example, to make string values the default. The keyword arguments 'annotate_xsi' (default: 0) and 'annotate_pytype' (default: 1) control which kind(s) of annotation to use.

### deannotate(element_or_tree, pytype=True, xsi=True) |
Recursively de-annotate the elements of an XML tree by removing 'pytype' and/or 'type' attributes. If the 'pytype' keyword argument is True (the default), 'pytype' attributes will be removed. If the 'xsi' keyword argument is True (the default), 'xsi:type' attributes will be removed.

### dump(...) |
dump(_Element element not None) Return a recursively generated string representation of an element.

### fromstring(xml, parser=None) |
Objectify specific version of the lxml.etree fromstring() function that uses the objectify parser. You can pass a different parser as second argument.

### getRegisteredTypes() |
Returns a list of the currently registered PyType objects. To add a new type, retrieve this list and call unregister() for all entries. Then add the new type at a suitable position (possibly replacing an existing one) and call register() for all entries. This is necessary if the new type interferes with the type check functions of existing ones (normally only int/float/bool) and must the tried before other types. To add a type that is not yet parsable by the current type check functions, you can simply register() it, which will append it to the end of the type list.

### makeparser(remove_blank_text=True, **kw) |
Create a new XML parser for objectify trees. You can pass all keyword arguments that are supported by `etree.XMLParser()`. Note that this parser defaults to removing blank text. You can disable this by passing the `remove_blank_text` boolean keyword option yourself.

### parse(f, parser=None) |
Parse a file or file-like object with the objectify parser. You can pass a different parser as second argument.

### pyannotate(element_or_tree, ignore_old=False, ignore_xsi=False, empty_pytype=None) |
Recursively annotates the elements of an XML tree with 'pytype' attributes. If the 'ignore_old' keyword argument is True (the default), current 'pytype' attributes will be ignored and replaced. Otherwise, they will be checked and only replaced if they no longer fit the current text value. Setting the keyword argument `ignore_xsi` to True makes the function additionally ignore existing `xsi:type` annotations. The default is to use them as a type hint. The default annotation of empty elements can be set with the `empty_pytype` keyword argument. The default is not to annotate empty elements. Pass 'str', for example, to make string values the default.

### setDefaultParser(...) |
Deprecated: use `set_default_parser()` instead.

### setPytypeAttributeTag(...) |
Deprecated: use `set_pytype_attribute_tag()` instead.

### set_default_parser(new_parser= None) |
Replace the default parser used by objectify's Element() and fromstring() functions. The new parser must be an etree.XMLParser. Call without arguments to reset to the original parser.

### set_pytype_attribute_tag(attribute_tag=None) |
Change name and namespace of the XML attribute that holds Python type information. Do not use this unless you know what you are doing. Reset by calling without argument. Default: "{http://codespeak.net/lxml/objectify/pytype}pytype"

### xsiannotate(element_or_tree, ignore_old=False, ignore_pytype=False, empty_type=None) |
Recursively annotates the elements of an XML tree with 'xsi:type' attributes. If the 'ignore_old' keyword argument is True (the default), current 'xsi:type' attributes will be ignored and replaced. Otherwise, they will be checked and only replaced if they no longer fit the current text value. Note that the mapping from Python types to XSI types is usually ambiguous. Currently, only the first XSI type name in the corresponding PyType definition will be used for annotation. Thus, you should consider naming the widest type first if you define additional types. Setting the keyword argument `ignore_pytype` to True makes the function additionally ignore existing `pytype` annotations. The default is to use them as a type hint. The default annotation of empty elements can be set with the `empty_type` keyword argument. The default is not to annotate empty elements. Pass 'string', for example, to make string values the default.

Variables Details

  ### PYTYPE_ATTRIBUTE Value:
      '{http://codespeak.net/lxml/objectify/pytype}pytype'