package - 安装 Airflow - 导入错误 : No module named clsregistry

Question

嗨，我是 Airflow 的新手并尝试安装它。我可以成功安装 Airflow ，但是当我做 airflow initdb 时，错误是:

(airflow_virtualenv) C02CF6JRMD6R:bin ybao$ airflow initdb

    Traceback (most recent call last):   File "/Users/ybao/airflow_virtualenv/bin/airflow", line 26, in <module>
        from airflow.bin.cli import CLIFactory   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/airflow/bin/cli.py", line 82, in <module>
        from airflow.www.app import (cached_app, create_app)   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/airflow/www/app.py", line 42, in <module>
        from airflow.www.blueprints import routes   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/airflow/www/blueprints.py", line 25, in <module>
        from airflow.www import utils as wwwutils   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/airflow/www/utils.py", line 40, in <module>
        import flask_admin.contrib.sqla.filters as sqlafilters   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/flask_admin/contrib/sqla/__init__.py", line 2, in <module>
        from .view import ModelView   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/flask_admin/contrib/sqla/view.py", line 18, in <module>
        from flask_admin.contrib.sqla.tools import is_relationship   File "/Users/ybao/airflow_virtualenv/lib/python2.7/site-packages/flask_admin/contrib/sqla/tools.py", line 4, in <module>
        from sqlalchemy.ext.declarative.clsregistry import _class_resolver ImportError: No module named clsregistry

我应该在哪里安装软件包？
谢谢!!

Answer 1

您使用的是什么版本的 Airflow ？
我刚刚使用 apache-airflow 1.10.14 遇到了这个问题。
此问题与最近发布的 SQLAlchemy (1.4.2) 或 Flask-SQLAlchemy (2.5.1) 有关
将这些依赖项恢复到以前的版本为我修复了它:

pip install SQLAlchemy==1.3.23 
pip install Flask-SQLAlchemy==2.4.4