未找到名为“间隔”的触发器

Question

我一直在使用 APScheduler，在尝试运行代码时出现错误“找不到名为‘间隔’的触发器”

它在我的本地机器上完美无缺，但可以在我的云机器上运行。

我尝试过：通过 pip、easy_install 和手动重新安装 apscheduler；升级安装工具；升级所有依赖项。

编辑：代码

if __name__ == '__main__':
    scheduler = BlockingScheduler()
    scheduler.add_job(SMS, 'interval', minutes=1)
    scheduler.start()
    print Run Complete

    try:
        # This is here to simulate application activity (which keeps the main thread alive).
        while True:
            time.sleep(2)
    except (KeyboardInterrupt, SystemExit):
        scheduler.shutdown()  # Not strictly necessary if daemonic mode is enabled but should be done if possible


LookupError                               Traceback (most recent call last)
<ipython-input-40-2895cd586d3f> in <module>()
      1 if __name__ == '__main__':
      2     scheduler = BlockingScheduler()
----> 3     scheduler.add_job(SMS, 'interval', hours=1)
      4     scheduler.start()
      5     print "Run Complete"

/Users/admin/anaconda/lib/python2.7/site-packages/apscheduler/schedulers/base.pyc in add_job(self, func, trigger, args, kwargs, id, name, misfire_grace_time, coalesce, max_instances, next_run_time, jobstore, executor, replace_existing, **trigger_args)
    328 
    329         job_kwargs = {
--> 330             'trigger': self._create_trigger(trigger, trigger_args),
    331             'executor': executor,
    332             'func': func,

/Users/admin/anaconda/lib/python2.7/site-packages/apscheduler/schedulers/base.pyc in _create_trigger(self, trigger, trigger_args)
    780 
    781         # Instantiate the trigger class
--> 782         return self._create_plugin_instance('trigger', trigger, trigger_args)
    783 
    784     def _create_lock(self):

/Users/admin/anaconda/lib/python2.7/site-packages/apscheduler/schedulers/base.pyc in _create_plugin_instance(self, type_, alias, constructor_kwargs)
    764                     raise TypeError('The {0} entry point does not point to a {0} class'.format(type_))
    765             else:
--> 766                 raise LookupError('No {0} by the name "{1}" was found'.format(type_, alias))
    767 
    768         return plugin_cls(**constructor_kwargs)

LookupError: No trigger by the name "interval" was found

Answer 1

此问题是由旧版本的 setuptools 引起的。见https://bitbucket.org/agronholm/apscheduler/issues/77/lookuperror-no-trigger-by-the-name

您可以通过运行sudo pip install --upgrade setuptools并重新安装apscheduler来解决这个问题sudo pip install --ignore-installed apscheduler

Answer 2

我在另一台服务器上的 ipython 中工作。我尝试卸载/升级 setuptools 和 APScheduler。然后，我将已有的完全相同的代码复制并粘贴到我在第二台服务器上创建的新笔记本中。

它奏效了。