Any trouble using gdsctools_anova executable, please let us know: create a ticket on gdsctools github.
First solution is to import the show function from pylab:
from pylab import show show()
The figures should appear now but you will have to close them to get back to the shell. To get a better interaction, exit from the shell and start a new one typing:
Under MAC, the default backend for pylab may cause some trouble with this message:
RuntimeError: CGContextRef is NULL
If so, try another backend:
GDSCTools is currently compatible for the version 2.7 but also 3.3, 3.4 and 3.5. We do not have any strong recommendation except to use whatever version is already installed on your system. We will not maintain the code for version below 2.7 although the code may work for those versions.
The standard documentation for the current stable version of Python is available at https://docs.python.org/3/. PDF, plain text, and downloadable HTML versions are also available at https://docs.python.org/3/download.html.
There are numerous tutorials and books available. The standard documentation includes The Python Tutorial.