#!/usr/bin/env python
# coding: utf-8

# In[1]:


get_ipython().run_line_magic('cd', '-q ..')

import graphviz

graphviz.__version__, graphviz.version()


# In[2]:


def make_graph(node_label=None, graph_name=None, **node_kwargs):
    result = graphviz.Digraph(name=graph_name)
    result.node('A', label=node_label, **node_kwargs)
    print(result)
    return result


# In[3]:


make_graph(node_label='"')


# In[4]:


make_graph(node_label='\\"')


# In[5]:


try:
    make_graph(node_label='\\').pipe(format='svg', encoding='utf-8');
except graphviz.CalledProcessError as e:
    assert 'syntax error' in e.stderr


# In[6]:


make_graph(node_label=r'\\')


# In[7]:


make_graph(node_label=r'\\"')


# https://www.graphviz.org/doc/info/attrs.html#k:escString

# In[8]:


make_graph(node_label=r'node: \N')


# In[9]:


make_graph(node_label=r'graph: \G', graph_name='spam')


# In[10]:


make_graph(node_label='spam', URL=r'https://example.org/\L')


# In[11]:


make_graph(node_label=r'centered\nleft\lright\r')