= ReviewerMeeting20090909 = == summary == * don't use `__iter__()` for things that aren't obviously collections * watch out for leaking the open file descriptor returned from `mkstemp()` * use `addCleanup()` * use `mkdtemp()` * use `os.fdopen()` * watch out for cleanup of other external resources * don't write umask-sensitive code * do not assume umask 022 * do not assume ''default Ubuntu user environment'' * watch out for devscripts and `~/.devscripts` * if a particular umask is required, add it to the code and test for it * watch out for similar environmental sensitivities * [ACTION] cprov to update guidelines to clarify how code sensitive to env changes should be written * HTML4 spec requires `