Question

我使用以下命令为python3创建了virtualenv： virtualenv -p $(which python3) ENV

然后激活源 source /Users/myusername/ENV/bin/activate

安装apache-airflow：

pip install apache-airflow

然后which airflow产生/Users/myusername/ENV/bin/airflow 但是当我尝试使用以下方法初始化数据库时：

airflow initdb

我遇到以下错误：

    {db.py:350} INFO - Creating tables
INFO  [alembic.runtime.migration] Context impl SQLiteImpl.
INFO  [alembic.runtime.migration] Will assume non-transactional DDL.
WARNI [airflow.utils.log.logging_mixin.LoggingMixin] cryptography not found - values will not be stored encrypted.
ERROR [airflow.models.DagBag] Failed to import: /Library/Python/2.7/site-packages/airflow/example_dags/example_http_operator.py
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/airflow/models/__init__.py", line 413, in process_file
    m = imp.load_source(mod_name, filepath)
  File "/Library/Python/2.7/site-packages/airflow/example_dags/example_http_operator.py", line 27, in <module>
    from airflow.operators.http_operator import SimpleHttpOperator
  File "/Library/Python/2.7/site-packages/airflow/operators/http_operator.py", line 21, in <module>
    from airflow.hooks.http_hook import HttpHook
  File "/Library/Python/2.7/site-packages/airflow/hooks/http_hook.py", line 23, in <module>
    import tenacity
  File "/Library/Python/2.7/site-packages/tenacity/__init__.py", line 375, in <module>
    from tenacity.tornadoweb import TornadoRetrying
  File "/Library/Python/2.7/site-packages/tenacity/tornadoweb.py", line 24, in <module>
    from tornado import gen
  File "/Library/Python/2.7/site-packages/tornado-6.0.3-py2.7-macosx-10.14-intel.egg/tornado/gen.py", line 126
    def _value_from_stopiteration(e: Union[StopIteration, "Return"]) -> Any:
                                   ^
SyntaxError: invalid syntax
Done.
(ENV) ---------------------------------------------------------

似乎示例脚本使用python 2.7，但无法识别函数定义语法。 apache-airflow软件包是否需要在下一个版本中修复，或者我可以采取一些措施来解决？我尝试解决此问题：使用python2.7代替python3 然后在Mac上启用的默认python 2.7上安装airflow，但这会引发其他错误，例如软件包“ six”不兼容。

Answer 1

您需要关闭要在配置文件中加载的示例DAG，才能解决此问题。

无论如何，当您告诉气流安装到Python 3虚拟环境中时，它使用2.7 Python似乎很奇怪。

由于语法错误，Apache Airflow initdb命令失败

1 个答案: