質問編集履歴
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test
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celery
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celeryのチュートリアルでインデント
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test
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@@ -1,92 +1,110 @@
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celeryでworkerを作るため[celeryのチュートリアル](http://flask.pocoo.org/docs/0.12/patterns/celery/)をやったのですが、
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```python
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celery -A add worker -l info
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```
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でceleryを動かすと下記のコードでインデントがおかしいとエラーが出ました。
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コード部分のクラス内の関数がおかしいのですが、ちょっと処理がいまいちわからないためご教授お願いします。
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```python
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File "/anaconda3/lib/python3.7/importlib/__init__.py", line 127, in import_module
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return _bootstrap._gcd_import(name[level:], package, level)
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File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
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File "<frozen importlib._bootstrap>", line 983, in _find_and_load
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File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
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File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
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File "<frozen importlib._bootstrap_external>", line 724, in exec_module
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File "<frozen importlib._bootstrap_external>", line 860, in get_code
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File "<frozen importlib._bootstrap_external>", line 791, in source_to_code
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File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
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File "/Users/tatsuyahagiwara/Desktop/add.py", line 12
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return TaskBase.__call__(self, *args, **kwargs)
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^
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IndentationError: expected an indented block
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```
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```python
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# add.py
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from celery import Celery
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def make_celery(app):
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celery = Celery('tasks', backend=app.config['CELERY_RESULT_BACKEND'],
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broker=app.config['CELERY_BROKER_URL'])
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celery.conf.update(app.config)
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TaskBase = celery.Task
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class ContextTask(TaskBase):
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abstract = True
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def __call__(self, *args, **kwargs):
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with app.app_context():
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return TaskBase.__call__(self, *args, **kwargs)
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celery.Task = ContextTask
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return celery
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from flask import Flask
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flask_app = Flask(__name__)
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flask_app.config.update(
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CELERY_BROKER_URL='redis://localhost:6379',
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CELERY_RESULT_BACKEND='redis://localhost:6379')
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celery = make_celery(flask_app)
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@celery.task()
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def add_together(a, b):
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手順1.Macのターミナル上でredisを起動
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```
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$ redis-server /usr/local/etc/redis.conf
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```
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手順2.mac上で2つ目のターミナルを開いてceleryを起動
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```
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$ celery -A taskss worker -l info
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```
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手順3.１で開いたredisでスクリプトを実行
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```
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# redis側
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$Python3
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$from taskss import tasks
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$p=tasks.delay("arrived!")
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$p
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>>> <AsyncResult: 969b31ee-f07e-4e96-9cf7-99a25d5671ed>
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```
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```
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# celery側
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Task taskss.tasks[969b31ee-f07e-4e96-9cf7-99a25d5671ed] succeeded in 10.002289248000011s: 'Hello arrived!'
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```
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手順4.結果を取得する
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```
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# redis側
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return a + b
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# エラー
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Traceback (most recent call last):
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File "<stdin>", line 1, in <module>
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File "/anaconda3/lib/python3.7/site-packages/celery/result.py", line 434, in result
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return self._get_task_meta()['result']
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File "/anaconda3/lib/python3.7/site-packages/celery/result.py", line 410, in _get_task_meta
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return self._maybe_set_cache(self.backend.get_task_meta(self.id))
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File "/anaconda3/lib/python3.7/site-packages/celery/backends/base.py", line 365, in get_task_meta
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meta = self._get_task_meta_for(task_id)
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AttributeError: 'DisabledBackend' object has no attribute '_get_task_meta_for'
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