In [1]:

    

from IPython.display import HTML
HTML('''<script>
code_show_err=true; 
function code_toggle_err() {
 if (code_show_err){
 $('div.output_stderr').hide();
 } else {
 $('div.output_stderr').show();
 }
 code_show_err = !code_show_err
} 
$( document ).ready(code_toggle_err);
</script>
To toggle on/off output_stderr, click <a href="javascript:code_toggle_err()">here</a>.''')

# https://stackoverflow.com/questions/9031783/hide-all-warnings-in-ipython


    

    
Out[1]:





To toggle on/off output_stderr, click here.

In [2]:

    

import networkx as nx
%matplotlib inline


    

In [3]:

    

G=nx.Graph()
G.add_node("spam")
G.add_edge(1,2)
print(list(G.nodes()))
print(list(G.edges()))


    

    




['spam', 1, 2]
[(1, 2)]

In [4]:

    

import networkx as nx
import matplotlib.pyplot as plt

try:
    import pygraphviz
    from networkx.drawing.nx_agraph import graphviz_layout
except ImportError:
    try:
        import pydotplus
        from networkx.drawing.nx_pydot import graphviz_layout
    except ImportError:
        raise ImportError("This example needs Graphviz and either "
                          "PyGraphviz or PyDotPlus")

G = nx.balanced_tree(2, 3) #3, 5
pos = graphviz_layout(G, prog='twopi', args='')
plt.figure(figsize=(8, 8))
nx.draw(G, pos, node_size=20, alpha=0.5, node_color="blue", with_labels=False)
plt.axis('equal')
plt.savefig('img/circular_tree.png')
plt.show()


    

    




/usr/local/lib/python3.4/dist-packages/networkx/drawing/nx_pylab.py:126: MatplotlibDeprecationWarning: pyplot.hold is deprecated.
    Future behavior will be consistent with the long-time default:
    plot commands add elements without first clearing the
    Axes and/or Figure.
  b = plt.ishold()
/usr/local/lib/python3.4/dist-packages/networkx/drawing/nx_pylab.py:138: MatplotlibDeprecationWarning: pyplot.hold is deprecated.
    Future behavior will be consistent with the long-time default:
    plot commands add elements without first clearing the
    Axes and/or Figure.
  plt.hold(b)
/usr/local/lib/python3.4/dist-packages/matplotlib/__init__.py:917: UserWarning: axes.hold is deprecated. Please remove it from your matplotlibrc and/or style files.
  warnings.warn(self.msg_depr_set % key)
/usr/local/lib/python3.4/dist-packages/matplotlib/rcsetup.py:152: UserWarning: axes.hold is deprecated, will be removed in 3.0
  warnings.warn("axes.hold is deprecated, will be removed in 3.0")






    

In [ ]: