Color builtin modules differently about tuna

[nschloe]

sys.builtin_module_names gives a list of compiled built-in modules. On my machine, that is

('_ast',
 '_bisect',
 '_blake2',
 '_codecs',
 '_collections',
 '_datetime',
 '_elementtree',
 '_functools',
 '_heapq',
 '_imp',
 '_io',
 '_locale',
 '_md5',
 '_operator',
 '_pickle',
 '_posixsubprocess',
 '_random',
 '_sha1',
 '_sha256',
 '_sha3',
 '_sha512',
 '_signal',
 '_socket',
 '_sre',
 '_stat',
 '_string',
 '_struct',
 '_symtable',
 '_thread',
 '_tracemalloc',
 '_warnings',
 '_weakref',
 'array',
 'atexit',
 'binascii',
 'builtins',
 'errno',
 'faulthandler',
 'fcntl',
 'gc',
 'grp',
 'itertools',
 'marshal',
 'math',
 'posix',
 'pwd',
 'pyexpat',
 'select',
 'spwd',
 'sys',
 'syslog',
 'time',
 'unicodedata',
 'xxsubtype',
 'zipimport',
 'zlib')

This is missing things like argparse, datetime etc. Hm.

[nschloe]

I've simply hardcoded the list of built-in modules now. Hopefully, we'll find a more aesthetically pleasing solution in the future.

[eric-wieser]

That list is missing _ctypes, _bz2, posixpath, genericpath, ntpath, and a few others. Could potentially depend on https://pypi.org/project/stdlib-list/, but that adds the need for network access.

[nschloe]

It appears that https://pypi.org/project/stdlib-list is unmaintained. Crucially, Python 3.7 isn't supported (yet?). I guess there's no way around us maintaining our own lists unfortunately. And I'm not too sure what to think about adding private modules to the list...

[eric-wieser]

@nschloe: I doubt it needs any maintenance - all it seems to do is scrape the sphinx data from the python docs. As long as the sphinx urls remain the same, it should work for all future python versions

[nschloe]

Ah, I'd been looking at https://github.com/jackmaney/python-stdlib-list/tree/master/stdlib_list/lists.

[eric-wieser]

Hmm, I think you're right. Looks like the sphinx script is just used to generate those lists at commit-time. Probably fairly straightforward to rerun fetch, and create a PR with the 3.7 defs.

[nschloe]

Probably fairly straightforward to rerun fetch, and create a PR with the 3.7 defs.

I think so. I've submitted an issue, let's see if the developer shows up sometime.