PDB question

[xeon]

Hi,

Any tuts on using python debugger (pdb)? Does pdb list function only
works with funtions defined on a seperate modules? I've tried to write
a function in the intepreter then debug it with pdb.run(), when the
prompt appears, issuing list command only gives me '[EOF]' (python
1.5.2 for windows 3.1). What does these mean (in pdb prompt) :

> <string>(1)?()
> <stdin>(1)foo()

TIA