本文介绍了全新安装后无法运行apache气流，python导入错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
使用 pip install apache-airflow 进行全新安装后，任何运行气流的尝试均会导致python导入错误：
after a fresh install using pip install apache-airflow, any attempts to run airflow end with a python import error:
Traceback (most recent call last):
File "/Users/\*/env/bin/airflow", line 26, in <module> from airflow.bin.cli import CLIFactory
File "/Users/\*/env/lib/python3.7/site-packages/airflow/bin/cli.py", line 70, in <module> from airflow.www.app import (cached_app, create_app)
File "/Users/\*/env/lib/python3.7/site-packages/airflow/www/app.py", line 26, in <module> from flask_wtf.csrf import CSRFProtect
File "/Users/\*/env/lib/python3.7/site-packages/flask_wtf/__init__.py", line 17, in <module> from .recaptcha import \*
File "/Users/\*/env/lib/python3.7/site-packages/flask_wtf/recaptcha/__init__.py", line 2, in <module> from .fields import \*
File "/Users/\*/env/lib/python3.7/site-packages/flask_wtf/recaptcha/fields.py", line 3, in <module> from . import widgets
File "/Users/\*/env/lib/python3.7/site-packages/flask_wtf/recaptcha/widgets.py", line 5, in <module> from werkzeug import url_encode
ImportError: cannot import name 'url_encode' from 'werkzeug' (/Users/*/env/lib/python3.7/site-packages/werkzeug/__init__.py)
推荐答案
这似乎是版本控制错误，werkzeug软件包的较新版本不再让气流寻找的url_encode，安装较低版本（ pip install werkzeug == 0.16.0 ）解决了该问题，气流现在可以正常运行。
It seemed to be a versioning error, the newer versions of the werkzeug package no longer have the url_encode that airflow is looking for, installing a lower version (pip install werkzeug==0.16.0) resolved the issue and airflow now runs without failing.
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