Recursion with error handling doesn't work

[jay20162016]

Running this code:

def turn():
    """
    MUST be defined for robot to run
    This function will be called at the beginning of every turn and should contain the bulk of your robot commands
    """
    try:
        turn()
    except RecursionError:
        pass

will result in (these logs are truncated for briefness)

Traceback (most recent call last):
  File "bot.py", line 33, in turn
  File "bot.py", line 34, in turn
NameError: name 'RecursionError' is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "bot.py", line 33, in turn
  File "bot.py", line 34, in turn
NameError: name 'RecursionError' is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/container/runner.py", line 222, in do_turn
    exec(self.locals['turn'].__code__, self.globals, self.locals)
  File "bot.py", line 34, in turn
NameError: name 'RecursionError' is not defined

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 926, in _bootstrap_inner
    self.run()
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/container/runner.py", line 23, in run
    self.runner.do_turn()
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/container/runner.py", line 224, in do_turn
    self.error_method(traceback.format_exc(limit=5))
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 167, in format_exc
    return "".join(format_exception(*sys.exc_info(), limit=limit, chain=chain))
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 121, in format_exception
    type(value), value, tb, limit=limit).format(chain=chain))
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  [Previous line repeated 493 more times]
RecursionError: maximum recursion depth exceeded

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 890, in _bootstrap
    self._bootstrap_inner()
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 936, in _bootstrap_inner
    (self.name, _format_exc()), file=_sys.stderr)
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 167, in format_exc
    return "".join(format_exception(*sys.exc_info(), limit=limit, chain=chain))
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 121, in format_exception
    type(value), value, tb, limit=limit).format(chain=chain))
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  File "/Users/jayjay/anaconda3/lib/python3.7/traceback.py", line 497, in __init__
    _seen=_seen)
  [Previous line repeated 494 more times]
RecursionError: maximum recursion depth exceeded
^CTraceback (most recent call last):
  File "run.py", line 112, in <module>
    play_all(delay = float(args.delay), keep_history = args.raw_text, real_time = not args.debug)
  File "run.py", line 66, in play_all
    game.turn()
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/game/game.py", line 63, in turn
    robot.turn()
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/game/robot.py", line 60, in turn
    self.runner.run()
  File "/Users/jayjay/.local/lib/python3.7/site-packages/battlehack20/engine/container/runner.py", line 237, in run
    self.wrapper.join()
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 1044, in join
    self._wait_for_tstate_lock()
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 1060, in _wait_for_tstate_lock
    elif lock.acquire(block, timeout):
KeyboardInterrupt
^CException ignored in: <module 'threading' from '/Users/jayjay/anaconda3/lib/python3.7/threading.py'>
Traceback (most recent call last):
  File "/Users/jayjay/anaconda3/lib/python3.7/threading.py", line 1308, in _shutdown
    lock.acquire()
KeyboardInterrupt

[spipm]

Building on this:
The following causes an actual stack overflow:

def turn():
    try:
        turn()
    except:
        turn()

-> "Fatal Python error: Cannot recover from stack overflow."