This is a mixed commit that fixes various small issues * print parentheses * 01 is invalid syntax (it was octal in py2) * [x for i in 1, 2] is invalid syntax * six moves Signed-off-by: Adrian Tschira <nota@notafile.com>
1. make it not blow out the stack when there are more than 50 things waiting for a lock. Fixes https://github.com/matrix-org/synapse/issues/2505. 2. Make it not mess up the log contexts.