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airflow - 在 iMac 上安装 Apache-Airflow - 气流 initdb - ImportError：无法导入名称对象

问题描述

我试图在 iMac 上安装气流

airflow initdb

我收到了这个错误

Traceback (most recent call last):
    File "/Users/admin/anaconda/bin/airflow", line 21, in <module>
      from airflow import configuration
    File "/Users/admin/anaconda/lib/python2.7/site-packages/airflow/__init__.py", line 37, in <module>
      from airflow.models import DAG
    File "/Users/admin/anaconda/lib/python2.7/site-packages/airflow/models.py", line 32, in <module>
      import dill
    File "/Users/admin/anaconda/lib/python2.7/site-packages/dill/__init__.py", line 60, in <module>
      from . import objtypes as types
    File "/Users/admin/anaconda/lib/python2.7/site-packages/dill/objtypes.py", line 16, in <module>
      from dill import objects
    ImportError: cannot import name objects

我找到了这个线程，虽然气流 initdb, ImportError: cannot import name HiveOperator，它不适用于在 iMac 上安装气流，并且错误不完全相同。但我还是试了一下。我改变了配置

# load_examples = True # default set up as True
load_examples = False # change to false to avoid airflow initdb error - But the error still there.

但是当我运行气流 initdb 时，我仍然得到同样的错误。

标签： airflow

解决方案

您可能需要检查系统上安装的 dill 版本。0.2a1 之前的版本（特别是 0.1a1 版本）不包含“对象”，并且会抛出您在上面看到的错误。

我在我的 Mac 上创建了一个测试 conda 环境，并通过 pip 安装尝试使用各种版本的 dill 导入失败。

dill 版本 0.1a1 的结果：

(dill_test) pip install dill==0.1a1
Collecting dill==0.1a1
Installing collected packages: dill
Successfully installed dill-0.1a1
(dill_test)  python
Python 2.7.15 |Anaconda, Inc.| (default, Dec 14 2018, 13:10:39)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
>>> from dill import objects
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name objects

dill 0.2a1 或更高版本的结果（导入对象时没有错误）：

(dill_test) pip uninstall dill
Uninstalling dill-0.1a1:
  Would remove:
    /Users/.../anaconda2/envs/dill_test/lib/python2.7/site-packages/dill-    0.1a1.dist-info/*
    /Users/.../anaconda2/envs/dill_test/lib/python2.7/site-packages/dill/*
Proceed (y/n)? y
  Successfully uninstalled dill-0.1a1
(dill_test) pip install dill==0.2a1
Collecting dill==0.2a1
Installing collected packages: dill
Successfully installed dill-0.2a1
(dill_test) python
Python 2.7.15 |Anaconda, Inc.| (default, Dec 14 2018, 13:10:39)
[GCC 4.2.1 Compatible Clang 4.0.1 (tags/RELEASE_401/final)] on darwin
>>> from dill import objects
>>>

https://pypi.org/project/dill/

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