Apache Airflow：气流initdb抛出ModuleNotFoundError：没有名为“ werkzeug.wrappers.json”的模块；'werkzeug.wrappers'不是软件包错误

Question

在使用python 3.6.8的Ubuntu 18.04上，尝试安装气流。当我运行airflow initdb命令时，抛出以下错误

Traceback (most recent call last):
  File "/home/uEnAFpip/.virtualenvs/airflow/bin/airflow", line 21, in <module>
    from airflow import configuration
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/airflow/__init__.py", line 40, in <module>
    from flask_admin import BaseView
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask_admin/__init__.py", line 6, in <module>
    from .base import expose, expose_plugview, Admin, BaseView, AdminIndexView  # noqa: F401
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask_admin/base.py", line 6, in <module>
    from flask import Blueprint, current_app, render_template, abort, g, url_for
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/__init__.py", line 20, in <module>
    from .app import Flask
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/app.py", line 69, in <module>
    from .wrappers import Request
  File "/home/uEnAFpip/.virtualenvs/airflow/lib/python3.6/site-packages/flask/wrappers.py", line 14, in <module>
    from werkzeug.wrappers.json import JSONMixin as _JSONMixin
ModuleNotFoundError: No module named 'werkzeug.wrappers.json'; 'werkzeug.wrappers' is not a package

尝试过pip3 install --upgrade Flask

Answer 1

“ pip3 install werkzeug == 0.15.4”解决了我的问题。似乎烧瓶引用了错误版本的werkzeug。

Answer 2

运行pip3 install -U Flask==1.0.4修复了该问题。我猜Flask 1.1.0中有一些问题正在影响气流。