Question

I’m trying to write the following piece of code in python.

g = networkx.Digraph()
g.add_edge(1,2,x = 2)

The ‘x’ here is a variable. But networkx seems to take this as a name of the attribute. I need to pass what’s inside x as the name of the attribute. How do I do it?

Answer 1

add_edge takes a dict for attributes. You just need to put the attribute/value pairs in a dict:

g.add_edge(1, 2, {x:2})
# or more explicitly
g.add_edge(1, 2, attr_dict={x:2})

Example:

In [25]: g = networkx.DiGraph()

In [26]: x = 'some string'

In [27]: g.add_edge(1, 2, {x:2})

In [28]: g[1][2]
Out[28]: {'some string': 2}