>>>
Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py", line 141, in <module>
    sys.exit(main())
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py", line 65, in main
    mainloop(config, locals_, banner, interp, paste, interactive=(not exec_args))
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py", line 138, in mainloop
    process_event(e)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsies.py", line 119, in process_event
    repl.process_event(e)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 416, in process_event
    return self.process_key_event(e)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 520, in process_key_event
    self.send_session_to_external_editor()
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 690, in send_session_to_external_editor
    self.reevaluate(insert_into_history=True)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 1278, in reevaluate
    self.on_enter(insert_into_history=insert_into_history)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 588, in on_enter
    self.push(self.current_line, insert_into_history=insert_into_history)
  File "/Users/tomb/Dropbox/code/bpython/bpython/curtsiesfrontend/repl.py", line 793, in push
    self.insert_into_history(line)
  File "/Users/tomb/Dropbox/code/bpython/bpython/repl.py", line 900, in insert_into_history
    self.rl_history.save(histfilename, getpreferredencoding(), self.config.hist_length)
  File "/Users/tomb/Dropbox/code/bpython/bpython/repl.py", line 272, in save
    hfile.write(line)
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/codecs.py", line 691, in write
    return self.writer.write(data)
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/codecs.py", line 351, in write
    data, consumed = self.encode(object, self.errors)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 5: ordinal not in range(128)