pdb.py - why is this debugger different from all other debuggers?

[ilya]

> - There is no way (I know of) to start a python script
>  from the command line with the debugger active;
>  I always have to modify the source to insert a
 > pdb.set_trace().

With python 2.4 you can do
python -m pdb.py yourscript arg1 arg2 ....

Ilya