Pylint: discard cached file state

Question

I use this answer to run pylint from PY script. (I use pylint plugin similar to SublimeLinter, but no new process of Python is used, Python is embedded into Windows program). I see that even if I change source file, ie fixed errors, pylint still gives old messages.

E.g. I opened source code in editor, I have function w/out docstring, pylint shows this error. Now I add docstring, save file (I don't restart editor), and call pylint-plugin again - but pylint still gives "no docstring" error.

Any way to have actual error messages without restarting editor with pylint plugin? Any way to tell pylint "discard file cache"?

I tried this. Before accessing pylint, i deleted pylint and "pylint.nnnnnnnnn" (if exist) from sys.modules. This doesn't give good, because on second access to pylint api, it gave empty result. I mean function from my URL, it gave empty pylint output if I did this. (It was only one place where i accessed pylint api) — Prog1020, Mar 08 '14 at 20:28

score 4 · Accepted Answer · edited Sep 25 '20 at 15:10

4

astroid (pylint's underlying library for AST) is holding a cache of ast per module. Try the code below to throw away the whole cache:

from astroid import MANAGER
MANAGER.astroid_cache.clear()

Relevant issue: https://github.com/PyCQA/pylint/issues/158

edited Sep 25 '20 at 15:10

Community

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answered Mar 10 '14 at 07:09

sthenault

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can't open the link – zephor May 06 '20 at 12:51

score 2 · Answer 2 · answered Mar 03 '20 at 20:17

Using pylint in vscode on Windows with similar issues:

go to C:\Users[my username].pylint.d directory
delete the .stat files making problems
restart vscode
trigger pylint again

Note: In my case I renamed a file from uppercase to lowercase. Then I got the result

Pylint: discard cached file state

2 Answers2