最近、Mac OSX Yosemite でトルネードを実行しているときに問題が発生しました。tornado サーバーにリクエストを送信すると、次のトレースバックが返されます。
ERROR:tornado.general:Uncaught exception
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/tornado/http1connection.py", line 674, in _server_request_loop
ret = yield conn.read_response(request_delegate)
File "/Library/Python/2.7/site-packages/tornado/gen.py", line 628, in run
value = future.result()
File "/Library/Python/2.7/site-packages/tornado/concurrent.py", line 109, in result
raise_exc_info(self._exc_info)
File "/Library/Python/2.7/site-packages/tornado/gen.py", line 175, in wrapper
yielded = next(result)
File "/Library/Python/2.7/site-packages/tornado/http1connection.py", line 157, in _read_message
max_bytes=self.params.max_header_size)
File "/Library/Python/2.7/site-packages/tornado/iostream.py", line 227, in read_until_regex
self._try_inline_read()
File "/Library/Python/2.7/site-packages/tornado/iostream.py", line 673, in _try_inline_read
self._add_io_state(ioloop.IOLoop.READ)
File "/Library/Python/2.7/site-packages/tornado/iostream.py", line 881, in _add_io_state
self.fileno(), self._handle_events, self._state)
File "/Library/Python/2.7/site-packages/tornado/ioloop.py", line 677, in add_handler
self._impl.register(fd, events | self.ERROR)
File "/Library/Python/2.7/site-packages/tornado/platform/kqueue.py", line 41, in register
self._control(fd, events, select.KQ_EV_ADD)
File "/Library/Python/2.7/site-packages/tornado/platform/kqueue.py", line 59, in _control
kevents.append(select.kevent(
AttributeError: 'module' object has no attribute 'kevent'
最後の行が最も重要です。これはbrewパッケージが見つからないためだと確信していますが、何が欠けているのか途方に暮れています.
さらに不思議なことに、select をインポートすると、kevent 関数が存在することがわかります。
Python 2.7.6 (default, Sep 9 2014, 15:04:36)
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import select
>>> select.kevent
<type 'select.kevent'>