How to debug Web2py applications?

Question

Is it possible? By debug I mean setting breakpoints, inspect values and advance step by step.

Answer 1

You can do remote debugging of python web apps over TCP/IP with winpdb.

(Link appears down as of June 2019. Try PyPI winpdb)

Answer 2

I haven't used web2py, but if it runs in a terminal window, you can use standard pdb stuff. Add this line somewhere in your code:

import pdb; pdb.set_trace() 

This will invoke the debugger and break. Then you can use PDB commands: n to step to the next line, l to list code, s to step into a function, p to print values, etc.