User:Mstone/Tricks

This page contains pointers to a collection of idioms which I rely on to accomplish tasks quickly and with predictable results.

verbose python tracebacks

Just import nice_traces; if you're feeling fancy, then consider trace(sys.exc_info())

verbosity controls on logging

See trac_helper.py

pythonic relations

See my relation module and Alloy (which was my inspiration, though I've made nothing more than a poor knockoff).

relational error logging

See trac_helper.py and collect-pkgs.py.

email-based error reporting

See email_warnings.py.

pdb

from pdb import set_trace as debug ... debug()

rpm makefiles

See rpm-packaging as well as individual projects like olpc-netutils along with my Fedora packaging bibliography.

pymeta parser-based controllers

triagebot is based on a model-view-controller architecture where the controller object is assembled at runtime based on data collected with a metaclass.

pymeta makes it easy to pick the right response to complicated input.

python gdb macros

http://wiki.python.org/moin/DebuggingWithGdb

python memory profiling

guppy + Tomeu's memory leak testing writeup.

tree-based python context management

puritan's main.py and contexts.py

custom dbus decorators

sds stub

ipython for exploring interprocess communication

IPython is wonderfully helpful for exploring xml-rpc and dbus interfaces.

code to make pylint happy

rainbow's inject.py can be automatically checked for many errors by pylint because it passes all data explicitly through function calls.

C error handling

nss-rainbow uses a dash of code-generation and a lot of convention to be very consistent about error detection and handling.

C warning flags & Makefile tips

nss-rainbow's Makefile gets a number of things right, though it can still be improved in several ways.

scripts for user creation

provision users on new machines in a scripted fashion.

program with git

Puritan and other parts of our build system show some silly things you can do with git if you are so inclined.

localize shell code

xs-upserv - just for kicks: a localized Makefile