The log viewers we use at Khan Academy usually show tracebacks in some kind of escaped format (with newlines replaced with \n, or the whole thing getting embedded into a large JSON object), so quickly formatting tracebacks has become a pastime for me.
Yesterday I got tired of formatting though, so now I have a fancy tool that can turn the most heinously encoded tracebacks into beautifully formatted emeralds.
Heinous:
'{"test_data": "{\\"data\\": \\"$ tools/runtests.py \\\\nRUNNING ALL SORTS OF TESTS\\\\nSTUFF IS PASSING!!\\\\n^CTraceback (most recent call last):\\\\n File \\\\\\"tools/devshell.py\\\\\\", line 145, in <module>\\\\n from devshell_eval import *\\\\n File \\ \\\\"webapp/tools/devshell_eval.p y\\\\\\", line 4, in <module>\\\\n from assessment_items.models import *\\\\n File \\\\\\"khan27/lib/python2.7/sre_parse.p y\\\\\\", line 126, in __len__\\\\n def __len__(self):\\\\nKeyboardInterrupt\\\\n$\\\\n\\", \\"type\\": \\"traceback\\"}", "test_result": "aborted"}'
Beautiful emerald:
Traceback (most recent call last): File "tools/devshell.py", line 145, in <module> from devshell_eval import * File "webapp/tools/devshell_eval.py", line 4, in <module> from assessment_items.models import * File "khan27/lib/python2.7/sre_parse.py", line 126, in __len__ def __len__(self): KeyboardInterrupt\\\\n$\\\\n\\", \\"type\\": \\"traceback\\"}", "test_result": "aborted"}'