[Python-Dev] PEP 549: Instance Properties (aka: module properties) (original) (raw)

Chris Barker chris.barker at noaa.gov
Mon Sep 11 13:00:15 EDT 2017

On Thu, Sep 7, 2017 at 3:49 PM, Larry Hastings <larry at hastings.org> wrote:

But I can cite at least one place in the standard library that would have been better if it'd been implemented as a module property: os.stat_float_times(). I wish there were a property feature available almost very time I encounter a "get*" method in the stdlib (or any where):

There are a heck of a lot in the os module:

In [4]: [s for s in dir(os) if s.startswith('get')] Out[4]:

['get_blocking', 'get_exec_path', 'get_inheritable', 'get_terminal_size', 'getcwd', 'getcwdb', 'getegid', 'getenv', 'getenvb', 'geteuid', 'getgid', 'getgrouplist', 'getgroups', 'getloadavg', 'getlogin', 'getpgid', 'getpgrp', 'getpid', 'getppid', 'getpriority', 'getsid', 'getuid']

Many of those may be good use-cases for getters, but still...

And just yesterday I was getting annoyed by some in sysconfig:

In [6]: [s for s in dir(sysconfig) if s.startswith('get')] Out[6]:

['get_config_h_filename', 'get_config_var', 'get_config_vars', 'get_makefile_filename', 'get_path', 'get_path_names', 'get_paths', 'get_platform', 'get_python_version', 'get_scheme_names']

modules serve the very useful function of a global singleton -- if we think properties are a good idea for classes, then they are a good idea for modules...

-CHB

--

Christopher Barker, Ph.D. Oceanographer

Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception

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