Installing pydot and graphviz packages in Anaconda environment

问题

I want to be able to create graphical decision trees in Python, and I am currently trying to install both pydot and graphviz.

I am using Anaconda as my environment (along with Spyder), and have tried to run the following lines of code

conda install -c https://conda.binstar.org/t/TOKEN/j14r pydot

with the result

Error: unknown host: http://repo.continuum.io/pkgs/pro/win-32/
Error: unknown host: http://repo.continuum.io/pkgs/free/win-32/
Error: unknown host: https://conda.binstar.org/t/TOKEN/j14r/win-32/
Error: No packages found matching: pydot

I have also tried using pip install pydot and pip install graphviz with similar results:

Downloading/unpacking pydot
  Cannot fetch index base URL https://pypi.python.org/simple/
  Could not find any downloads that satisfy the requirement pydot
Cleaning up...
No distributions at all found for pydot
Storing complete log in [...]

I am getting pretty bored at trying to figure out how to go about this, so I was hoping anyone out there could give me some tips perhaps.

Thanks

回答1:

I had the same issue and solved it by (order is important):

1. Installing graphviz, simply via sudo apt-get install graphviz
2. Installing graphviz for Python via conda sudo ~/anaconda2/bin/conda install graphviz
3. Finally, by installing pydot using conda sudo ~/anaconda2/bin/conda install pydot

This answer is overdue but this post helped me (together with this one that mentions the installation order), so hopefully this answer will help someone else. I'm using Ubuntu 14.04 and Python 2.7.

P.S. apparently, there could be some issues with step 1 of the above algorithm, this post mentions how to fix them.

回答2:

pip install pydot should now install version 1.2.3 from PyPI. Since the time of the OP, a distribution for pydot has been uploaded to PyPI.

回答3:

pip install pydotplus
conda install -c anaconda graphviz=2.38.0

(see here for latest versions https://anaconda.org/anaconda/graphviz)

worked for me.

回答4:

Please see if this works for you...

1) Open the "Anaconda Prompt" by simply pressing WINDOW + S (for Windows OS Users) and type CMD. Then Select accordingly.

2) Type the command "pip install pydot"

3) Follow the onscreen information.

NOTE: I'm using Conda version 4.3.21 and Python 3.6

And Decision Tree Implementation below:

Graphical Visualization of the Decision Tree

回答5:

installing graphviz first and then installing pydotplus on mac, helped me. I was not able to install pydot through pip or conda or even through jupiter notebook. after installing, imported pydotplus(instead of usual pydot)

来源：https://stackoverflow.com/questions/27482170/installing-pydot-and-graphviz-packages-in-anaconda-environment