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Attributes
----------
To directly add DOT_ ``att_stmt`` attribute statements,
call the :meth:`~.Graph.attr` method
of the :class:`.Graph` or :class:`.Digraph` instance
with the wanted target as first argument and the attributes as keyword args.
.. hint::
Attribute statements affect all **later** graphs, nodes, or edges
within the same (sub-)graph.
.. doctest::
>>> import graphviz
>>> ni = graphviz.Graph('ni') # doctest: +NO_EXE
>>> ni.attr('node', shape='rarrow')
>>> ni.node('1', 'Ni!')
>>> ni.node('2', 'Ni!')
>>> ni.node('3', 'Ni!', shape='egg')
>>> ni.attr('node', shape='star')
>>> ni.node('4', 'Ni!')
>>> ni.node('5', 'Ni!')
If you omit the first :meth:`~.Graph.attr` argument, the method can be used
to set arbitrary attributes as key-value pairs targeting
the current (sub-)graph
(e.g. for ``rankdir``, ``label``,
or setting ``rank='same'`` within a subgraph context,
:ref:`example <rank_same.py>`):
.. doctest::
>>> ni.attr(rankdir='LR') # doctest: +NO_EXE
>>> ni.edges(['12', '23', '34', '45'])
>>> print(ni.source) # doctest: +NORMALIZE_WHITESPACE
graph ni {
node [shape=rarrow]
1 [label="Ni!"]
2 [label="Ni!"]
3 [label="Ni!" shape=egg]
node [shape=star]
4 [label="Ni!"]
5 [label="Ni!"]
rankdir=LR
1 -- 2
2 -- 3
3 -- 4
4 -- 5
}
.. image:: _static/ni.svg
:align: center
.. include:: _links.rst
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