Question

我在一个名为 engdados 的 Anaconda 环境中安装了气流。当我执行命令气流 initdb 时，我收到以下错误：airflow initdb: cannot import name 'Pendulum' from 'pendulum'。完整的回溯如下所示：

(engdados) guilherme@Athena-LNX:~$ airflow initdb
Traceback (most recent call last):
  File "/home/guilherme/anaconda3/envs/engdados/bin/airflow", line 25, in <module>
    from airflow.configuration import conf
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/__init__.py", line 47, in <module>
    settings.initialize()
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/settings.py", line 403, in initialize
    configure_adapters()
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/settings.py", line 319, in configure_adapters
    from pendulum import Pendulum
ImportError: cannot import name 'Pendulum' from 'pendulum' (/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/pendulum/__init__.py)
(engdados) guilherme@Athena-LNX:~$ service start mysql$
start: unrecognized service
(engdados) guilherme@Athena-LNX:~$ service mysql start$
Usage: /etc/init.d/mysql start|stop|restart|reload|force-reload|status|bootstrap
(engdados) guilherme@Athena-LNX:~$ airflow initdb
Traceback (most recent call last):
  File "/home/guilherme/anaconda3/envs/engdados/bin/airflow", line 25, in <module>
    from airflow.configuration import conf
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/__init__.py", line 47, in <module>
    settings.initialize()
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/settings.py", line 403, in initialize
    configure_adapters()
  File "/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/airflow/settings.py", line 319, in configure_adapters
    from pendulum import Pendulum
ImportError: cannot import name 'Pendulum' from 'pendulum' (/home/guilherme/anaconda3/envs/engdados/lib/python3.8/site-packages/pendulum/__init__.py)

问题是：摆锤装好了！当我执行 conda list 命令时，我可以看到如下所示的钟摆：

 Name                    Version                   Build  Channel

pendulum                  2.1.2                    pypi_0    pypi

我目前检查的内容：

engdados 环境激活了吗？是的

Pendulum 是否安装在 Anaconda 环境中？是的

Anaconda 显示的 Pendulum 版本与 conda list (1.4.4) 中显示的版本不同。为什么？

我不知道发生了什么。提前致谢。

Answer 1

在钟摆版本 2 中，类 pendulum.Pendulum 被替换为 pendulum.DateTime。

您的气流版本期望摆锤 1.x，但您的环境有 2.x。

您可以通过创建新环境并安装airflow 2.0（使用pendulum 2.x）来解决此问题。如果您必须使用气流 < 2.0，则需要将摆锤固定到 < 2.0（例如使用 pip 约束）。

Answer 2

此外，如果您在代码中使用 Pendulum，例如在自定义运算符中，您可以添加

try:
    from pendulum import DateTime as Pendulum
except ImportError:
    from pendulum import Pendulum

气流 initdb：无法从“钟摆”导入名称“钟摆”

2 个答案: