Pygraphviz Valueerror: Program Dot Not Found In Path (python)

I am having problem with pygraphviz on win7(64). I installed Graphviz and then pygraphviz. When I try to compile my code G=pgv.AGraph() d={'1': {'2': None}, '2': {'1': None, '3': N

Solution 1:

You may get this problem even if you have PyGraphviz installed, if the PyGraphviz bin directory has not been added to the path. I had this problem on windows (after installing PyGraphviz with .msi).

To resolve, add the bin directory (e.g. C:\Program Files (x86)\Graphviz2.38\bin) to the PATH system variable, e.g. on Win7:

System Properties -> Environment Variables -> System Varibales -> PATH -> Edit...

Solution 2:

If you have Anaconda installed the simplest way to go about this is run the following from CMD:

conda install graphviz

you might also need the following:

conda install pydot-ng