How to debug Web2py applications?

Question

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

Answer 1

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.

Answer 2

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

Answer 3

One can debug applications built on Web2py using the following set-up:

1. Eclipse IDE
2. Install Pydev into Eclipse
3. Set Breakpoints on your code as needed
4. Within Eclipse right-click the file web2py.py and select Debug As -> Python Run
5. When a breakpoint is hit Eclipse will jump to the breakpoint where you can inspect variables and step thru the code

Answer 4

Yes, it is possible, Due to the "span prevention" I am still not allowed to post screenshots, but here is a full screenshot hosted at my website:

http://static.techfuel.net/debug_web2py.png

Answer 5

Follow this guide.

Answer 6

As Carl stated, it is as easy as: 1. Installing PyDev in Eclipse 2. Right Click on your Web2Py project, selecting Debug As > Python Run 3. Selecting web2py.py as the file to run

No other plugins or downloads are needed.

Answer 7

Here is an article on debugging python with pdb, which will work with web2py. http://sontek.net/debugging-python-with-pdb