PATH='[^']*'	PATH=[$PATH]
/tmp/[^/ '"]*	[TMP]
pid=[0-9]*	pid=[PID]
....-..-.._..:..:..	[DATETIME]
'[^']*/selftest/process_test/foo.py'	[$0]
"[^"]*/selftest/process_test/foo.py"	[$0]
, line [0-9]*	, line [LINE]