气流 initdb：无法从 'pendulum' 导入名称 'Pendulum'
airflow initdb: cannot import name 'Pendulum' from 'pendulum'
我在我的一个名为 engdados 的 Anaconda 环境中安装了 airflow。当我执行命令 airflow initdb 时，出现以下错误：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：摆锤安装好了！当我执行 conda list 命令时，我可以看到钟摆如下：
Name Version Build Channel
pendulum 2.1.2 pypi_0 pypi
到目前为止我检查过的内容：
engdados环境激活了吗？是
Pendulum是否安装在Anaconda环境中？是
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。
在钟摆版本 2 中，class pendulum.Pendulum 替换为 pendulum.DateTime。
您的气流版本需要摆动 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。如果必须使用 airflow < 2.0，则需要将 pendulum 固定到 < 2.0（例如使用 pip 约束）。
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
我在我的一个名为 engdados 的 Anaconda 环境中安装了 airflow。当我执行命令 airflow initdb 时，出现以下错误：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：摆锤安装好了！当我执行 conda list 命令时，我可以看到钟摆如下：
Name Version Build Channel
pendulum 2.1.2 pypi_0 pypi
到目前为止我检查过的内容：
engdados环境激活了吗？是
Pendulum是否安装在Anaconda环境中？是
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。
在钟摆版本 2 中，class pendulum.Pendulum 替换为 pendulum.DateTime。
您的气流版本需要摆动 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。如果必须使用 airflow < 2.0，则需要将 pendulum 固定到 < 2.0（例如使用 pip 约束）。
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