Using Chaco in Python 3.6 (Anaconda)

Question

I'm here because I've tried to install the Chaco module on Anaconda and it doesn't work. First I've tried the simple command:

conda install -c anaconda chaco=4.5.0

but it returns package specification problems:

UnsatisfiableError: The following specifications were found to be in conflict:
  - chaco 4.5.0* -> enable 4.5.1 -> numpy 1.10* -> python 2.7* -> openssl 1.0.1*
  - python 3.6*
Use "conda info <package>" to see the dependencies for each package

Then I tried with the Python 2.7 version of Anaconda, but I still have problems with PyQt4 which was uninstalled because of PyQt5. I created an environement in PyQt4 but the module was still not found. I wish I could work with Chaco in Python 3.6 but I don't know what to do...

Answer 1

Anaconda does not currently provide Chaco packages for Python 3. The latest version of Chaco supported by Anaconda is 4.5: https://anaconda.org/anaconda/chaco

As you can see here, Python 3 support wasn't added to Chaco until version 4.6 in December of 2016: https://github.com/enthought/chaco/releases/tag/4.6.0

You can install Chaco in Python 3.6 using pip install chaco, but you'll also need numpy, setuptools, enable, and likely Visual Studio.

I'm not sure why you're having difficulty installing Chaco on a Python 2.7 Anaconda environment, but Enable doesn't support PyQt 5, you'll have to use PyQt 4: https://github.com/enthought/enable#prerequisites