Pydb is a modified version of the standard Python debugger, pdb, with a number
of augmented features. In particular, it is intended to be used with DDD,
the Data Display Debugger.
DDD is an X-Windows based front end to a number of debuggers, including
gdb, xdb, jdb (for java), and now, pydb. DDD allows one to place a
breakpoint by clicking on a line of code, drag breakpoints, install
temporary breakpoints, edit breakpoints, etc. DDD also provides a
graphical display of variables which are updated as each breakpoint is
triggered. DDD provides a uniform way of using the debuggers listed
above, and with support for Python now added, may be particularly
helpful for those who need to work with both C and Python code.
DDD is a mature program that runs on a large number of platforms.
The version available here is based on DDD-3.0 (released June, 1998).
More information on DDD is available at DDD's
<A HREF="http://www.cs.tu-bs.de/softech/ddd">home page</A>.
In the course of connecting the Python debugger pdb to DDD, a number of
changes were required. As a result, the new version of pdb, pydb, now
supports temporary breakpoints, conditional breakpoints, and an ignore
breakpoint count. Also, it is now easy to set breakpoints in modules
outside the current one: that is, you can issue a command such as
'break whrandom.random' assuming the module whrandom.py can be found
somewhere in sys.path. Breakpoints can be disabled and re-enabled.
Pydb can be used independently of DDD.
This is a first release; perfection won't be attained until the n'th
release (where n is undefined).
Two distributions are available. Both contain all the Python code
along with documentation for DDD. One release contains DDD as a
compiled binary for Solaris 2.6 (using gcc 2.8.1). The other contains
the DDD source code modified for Python. If DDD compiles on your
system, this modified version will (should!); it just takes a while (3
hours on my sparc 5 85Mhz) as DDD is not small.
<A HREF="http://daikon.tuc.noao.edu/python/xxxx.tar.gz">pydb with DDD compiled for Solaris 2.6</A>
<A HREF="http://daikon.tuc.noao.edu/python/XXXX.tar.gz">pydb and DDD source code</A>
Comments, suggestions, and bug reports are welcome.
<P> <A HREF="daikon.tuc.noao.edu/python">pddd 1.0</A>Python debugger based
on pdb.py with DDD, a widely used X-windows based front end.(25-8-98)