>>> from __future__ import print_function
>>> from markdown import markdown
>>> text = 'I <3 you! :P'
>>> print(markdown(text, ['mdx_unimoji']))    # doctest: +NORMALIZE_WHITESPACE
<p>I <span class="emoji" style="color:red">❤</span> you! <span class="emoji">😛</span></p>

>>> from mdx_unimoji import UnimojiExtension
>>> img_heart = '<img alt="love" src="heart.png"/>'
>>> img_tongue = '<img alt=":P" src="tongue.png"/>'
>>> overrides = UnimojiExtension.EMOJI
>>> overrides.update({img_heart: ['<3'],
...                   img_tongue: ':p :P :-p :-P'.split()})
>>> print(markdown(text,
...                extensions=[UnimojiExtension(span_class='other',
...                                             emoji=overrides)]))
... # doctest: +NORMALIZE_WHITESPACE
<p>I <img alt="love" class="other" src="heart.png" /> you! \
<img alt=":P" class="other" src="tongue.png" /></p>