Latest update (v0.02).
Whilst I learn how to do 3D graphics in matplotlib I have integrated a 2D routine. It’s a rough integration but it seems to work OK. You can read the captcha at least!
Python 2.7 version using “xrange” :
https://anvil.works/ide#clone:62CHFIY36HAHO2AR=GXC3XBVIKDD6LLMCPFX3TLOO
If you want to use Python 3, just change the “xrange” to “range”. Seems that “range” in v3 is the equivalent to “xrange” in v2.
Here’s the source for the 2D routine :