%%pycodestyle doesn't do anything the first time it is executed.

[cmichal2]

After loading the pycodestyle_magic extension, the first time a cell is executed with %%pycodestyle at the beginning, nothing happens. Is that the intended behaviour? It seems to do the job on subsequent calls - but it never does anything the first time after the extension is loaded.

[mattijn]

You are right. I can reproduce this issue.

(since I included flake8_on (and pycodestyle_on) I haven't used these one cell checkers anymore)