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//usr/share/doc/python-markupsafe-0.11/README.rst

MarkupSafe
==========

Implements a unicode subclass that supports HTML strings:

>>> from markupsafe import Markup, escape
>>> escape("<script>alert(document.cookie);</script>")
Markup(u'&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
>>> tmpl = Markup("%s")
>>> tmpl % "Peter > Lustig"
Markup(u'Peter &gt; Lustig')

If you want to make an object unicode that is not yet unicode
but don't want to lose the taint information, you can use the
`soft_unicode` function:

>>> from markupsafe import soft_unicode
>>> soft_unicode(42)
u'42'
>>> soft_unicode(Markup('foo'))
Markup(u'foo')

Objects can customize their HTML markup equivalent by overriding
the `__html__` function:

>>> class Foo(object):
... def __html__(self):
... return 'Nice'
...
>>> escape(Foo())
Markup(u'Nice')
>>> Markup(Foo())
Markup(u'Nice')

Since MarkupSafe 0.10 there is now also a separate escape function
called `escape_silent` that returns an empty string for `None` for
consistency with other systems that return empty strings for `None`
when escaping (for instance Pylons' webhelpers).

If you also want to use this for the escape method of the Markup
object, you can create your own subclass that does that::

from markupsafe import Markup, escape_silent as escape

class SilentMarkup(Markup):
        __slots__ = ()

@classmethod
        def escape(cls, s):
            return cls(escape(s))