lxml.etree.xmlfile

Package lxml :: Module etree :: Class xmlfile |
[hide private]
[frames] | no frames]

# Class xmlfile

    object --+
             |
            xmlfile

Known Subclasses:
  - htmlfile

xmlfile(self, output_file, encoding=None, compression=None, close=False, buffered=True)

A simple mechanism for incremental XML serialisation.

Usage example:

    with xmlfile("somefile.xml", encoding='utf-8') as xf:
        xf.write_declaration(standalone=True)
        xf.write_doctype('<!DOCTYPE root SYSTEM "some.dtd">')

        # generate an element (the root element)
        with xf.element('root'):
             # write a complete Element into the open root element
             xf.write(etree.Element('test'))

             # generate and write more Elements, e.g. through iterparse
             for element in generate_some_elements():
                 # serialise generated elements into the XML file
                 xf.write(element)

             # or write multiple Elements or strings at once
             xf.write(etree.Element('start'), "text", etree.Element('end'))

If 'output_file' is a file(-like) object, passing `close=True` will close it when exiting the context manager. By default, it is left to the owner to do that. When a file path is used, lxml will take care of opening and closing the file itself. Also, when a compression level is set, lxml will deliberately close the file to make sure all data gets compressed and written.

Setting `buffered=False` will flush the output after each operation, such as opening or closing an `xf.element()` block or calling `xf.write()`. Alternatively, calling `xf.flush()` can be used to explicitly flush any pending output when buffering is enabled.

Instance Methods | [hide private]
__aenter__(...) |
__aexit__(...) |
__enter__(...) |
__exit__(...) |
__init__(self, output_file, encoding=None, compression=None, close=False, buffered=True) x.__init__(...) initializes x; see help(type(x)) for signature |
a new object with type S, a subtype of T |
__new__(T, S, ...) |
Inherited from `object`: `__delattr__`, `__format__`, `__getattribute__`, `__hash__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__sizeof__`, `__str__`, `__subclasshook__`

Properties | [hide private]
Inherited from `object`: `__class__`

Method Details | [hide private]

### __init__(self, output_file, encoding=None, compression=None, close=False, buffered=True) (Constructor) |
x.__init__(...) initializes x; see help(type(x)) for signature Overrides: object.__init__

### __new__(T, S, ...) |
Returns: a new object with type S, a subtype of T Overrides: object.__new__