User:Mstone/Tricks: Difference between revisions
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m (New page: == Verbose Python Tracebacks == [http://teach.laptop.org/~mstone/nice_traces.py nice_traces.py] from nice_traces import trace # sys.excepthook now is set to trace by the import #...) |
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This page contains pointers to a collection of idioms which I rely on to accomplish tasks quickly and with predictable results. |
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; verbose python tracebacks |
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== Verbose Python Tracebacks == |
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: <tt>import [http://docs.python.org/library/cgitb.html cgitb]; cgitb.enable(format="plain")</tt> |
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; verbosity controls on logging |
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[http://teach.laptop.org/~mstone/nice_traces.py nice_traces.py] |
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from nice_traces import trace |
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# sys.excepthook now is set to trace by the import |
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# also, trace(sys.exc_info()) can be used for more controlled handling |
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; pythonic relations |
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== Handy report() function == |
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: See my [http://dev.laptop.org/git/users/mstone/relation relation] module and [http://alloy.mit.edu Alloy] (which was my inspiration, though I've made nothing more than a poor knockoff). |
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; relational error logging |
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; email-based error reporting |
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; pdb |
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: <tt>from pdb import set_trace as debug ... debug()</tt> |
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; rpm makefiles |
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== Email-based error reporting == |
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: [https://launchpad.net/pymeta pymeta] makes it easy to pick the right response to complicated input. |
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; python gdb macros |
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== RPM Makefiles == |
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; python memory profiling |
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: [http://dev.laptop.org/git/users/mstone/guppy guppy] + Tomeu's [[memory leak testing]] writeup. |
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; tree-based python context management |
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: [http://dev.laptop.org/git?p=users/mstone/puritan;a=blob;f=main.py;hb=f9#l16 puritan's main.py] and [http://dev.laptop.org/git?p=users/mstone/puritan;a=blob;f=contexts.py;hb=f9 contexts.py] |
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; custom dbus decorators |
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: [http://dev.laptop.org/git?p=users/mstone/sds;a=blob;f=sds/service.py;hb=HEAD sds stub] |
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; ipython for exploring interprocess communication |
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== Python GDB Macros == |
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: [http://ipython.scipy.org IPython] is wonderfully helpful for exploring xml-rpc and dbus interfaces. |
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; code to make pylint happy |
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: rainbow's [http://dev.laptop.org/git?p=users/mstone/security;a=blob;f=rainbow/rainbow/inject.py;hb=cli inject.py] can be automatically checked for many errors by [http://www.logilab.org/project/pylint pylint] because it passes all data explicitly through function calls. |
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; C error handling |
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: [http://dev.laptop.org/git?p=users/mstone/nss-rainbow;a=tree nss-rainbow] uses a dash of code-generation and a lot of convention to be very consistent about error detection and handling. |
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; C warning flags & Makefile tips |
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: nss-rainbow's [http://dev.laptop.org/git?p=users/mstone/nss-rainbow;a=blob;f=Makefile;hb=HEAD#l2 Makefile] gets a number of things right, though it can still be improved in several ways. |
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; scripts for user creation |
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: [http://dev.laptop.org/git?p=users/mstone/provisioning;a=tree provision] users on new machines in a scripted fashion. |
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; program with git |
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: [[Puritan]] and other parts of our [[build system]] show some silly things you can do with [http://git.or.cz git] if you are so inclined. |
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; localize shell code |
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: [http://dev.laptop.org/git?p=users/cjb/xs-rsync;f=xs-upserv;a=blob xs-upserv] - just for kicks: a localized Makefile |
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Latest revision as of 22:54, 6 March 2011
This page contains pointers to a collection of idioms which I rely on to accomplish tasks quickly and with predictable results.
- verbose python tracebacks
- import cgitb; cgitb.enable(format="plain")
- 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