Package lxml :: Module cssselect :: Class CSSSelector

[hide private]
[frames] | no frames]

# Class CSSSelector

source code

                   object --+
                            |
    etree._XPathEvaluatorBase --+
                                |
                      etree.XPath --+
                                    |
                                   CSSSelector

A CSS selector.

Usage:

    >>> from lxml import etree, cssselect
    >>> select = cssselect.CSSSelector("a tag > child")

    >>> root = etree.XML("<a><b><c/><tag><child>TEXT</child></tag></b></a>")
    >>> [ el.tag for el in select(root) ]
    ['child']

To use CSS namespaces, you need to pass a prefix-to-namespace mapping as `namespaces` keyword argument:

    >>> rdfns = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'
    >>> select_ns = cssselect.CSSSelector('root > rdf|Description',
    ...                                   namespaces={'rdf': rdfns})

    >>> rdf = etree.XML((
    ...     '<root xmlns:rdf="%s">'
    ...       '<rdf:Description>blah</rdf:Description>'
    ...     '</root>') % rdfns)
    >>> [(el.tag, el.text) for el in select_ns(rdf)]
    [('{http://www.w3.org/1999/02/22-rdf-syntax-ns#}Description', 'blah')]

Instance Methods | [hide private]

__init__(self, css, namespaces=None, translator='xml') x.__init__(...) initializes x; see help(type(x)) for signature | source code

__repr__(self) repr(x) | source code

Inherited from `etree.XPath`: `__call__`, `__new__` Inherited from `etree._XPathEvaluatorBase`: `evaluate` Inherited from `object`: `__delattr__`, `__format__`, `__getattribute__`, `__hash__`, `__reduce__`, `__reduce_ex__`, `__setattr__`, `__sizeof__`, `__str__`, `__subclasshook__`

Properties | [hide private]

Inherited from `etree.XPath`: `path` Inherited from `etree._XPathEvaluatorBase`: `error_log` Inherited from `object`: `__class__`

Method Details | [hide private]

### __init__(self, css, namespaces=None, translator='xml')
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__
  (inherited documentation)

### __repr__(self)
(Representation operator)

source code

repr(x)

Overrides: object.__repr__
  (inherited documentation)