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websocketとwebsocket_clientの競合でうまくimportできないのを解決する

Posted at

達成したいこと

  • import websocketしたい
  • websocket.create_connection()したい

やったこと

importできない

sumple_ws.py
from websocket import create_connection

Traceback (most recent call last):
  File "sumple_ws.py", line 10, in <module>
    from websocket import create_connection
ImportError: cannot import name 'create_connection' from 'websocket' (unknown location)

:thinking:

websocket_clientとかいうやつがある

サーバ側とクライアント側で使うべきパッケージが違うらしい

今回のケースでは誤り

$  pip install websocket

こっちが正解

$  pip install websocket-client

なのにimportするときはどっちもwebsocket
リーダブルコード読んできてください

websocket_clientを導入したのにimportできない

はい完璧

$  pip install websocket-client
$  pip uninstall websocket

$  pip freeze | grep websocket
websocket-client==0.57.0

が 再現

sumple_ws.py
from websocket import create_connection
Traceback (most recent call last):
  File "sumple_ws.py", line 10, in <module>
    from websocket import create_connection
ImportError: cannot import name 'create_connection' from 'websocket' (unknown location)

import websocketの名前空間がおかしい

対話モードで確認

>>> import websocket
>>> dir(websocket)
['__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__']

:thinking: :thinking: :thinking:

websocket_clientも再インストールする

$  pip uninstall websocket-client
$  pip install websocket-client

対話モード
```python
>>> import websocket
>>> dir(websocket)
['ABNF', 'DEFAULT_SOCKET_OPTION', 'STATUS_ABNORMAL_CLOSED', 'STATUS_BAD_GATEWAY', 'STATUS_GOING_AWAY', 'STATUS_INVALID_EXTENSION', 'STATUS_INVALID_PAYLOAD', 'STATUS_MESSAGE_TOO_BIG', 'STATUS_NORMAL', 'STATUS_POLICY_VIOLATION', 'STATUS_PROTOCOL_ERROR', 'STATUS_STATUS_NOT_AVAILABLE', 'STATUS_TLS_HANDSHAKE_ERROR', 'STATUS_UNEXPECTED_CONDITION', 'STATUS_UNSUPPORTED_DATA_TYPE', 'WebSocket', 'WebSocketAddressException', 'WebSocketApp', 'WebSocketBadStatusException', 'WebSocketConnectionClosedException', 'WebSocketException', 'WebSocketPayloadException', 'WebSocketProtocolException', 'WebSocketProxyException', 'WebSocketTimeoutException', '__builtins__', '__cached__', '__doc__', '__file__', '__loader__', '__name__', '__package__', '__path__', '__spec__', '__version__', '_abnf', '_app', '_cookiejar', '_core', '_exceptions', '_handshake', '_http', '_logging', '_socket', '_ssl_compat', '_url', '_utils', 'continuous_frame', 'create_connection', 'debug', 'dump', 'enableTrace', 'error', 'frame_buffer', 'getdefaulttimeout', 'isEnabledForDebug', 'isEnabledForError', 'isEnabledForTrace', 'recv', 'recv_line', 'send', 'setdefaulttimeout', 'sock_opt', 'trace', 'warning']

今度こそ完璧

要因

インストールとアンインストールのタイミングのせいでなんやかんやあったと思われる

これが

$  pip install websocket-client
$  pip uninstall websocket

この順番ならよかったはず

$  pip uninstall websocket
$  pip install websocket-client
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