Apache Airflow : airflow initdb results in "ImportError: No module named json"

Question

在 Ubuntu 16.04 和 Python 2.7 默认版本上，我正在尝试安装 Apache airflow 但运行遇到几个问题，目前我在

上看到

apache initdb 
Traceback (most recent call last):
  File "/usr/local/bin/airflow", line 21, in <module>
    from airflow import configuration
  File "/usr/local/lib/python2.7/dist-packages/airflow/__init__.py", line 40, in <module>
    from flask_admin import BaseView
  File "/usr/local/lib/python2.7/dist-packages/flask_admin/__init__.py", line 6, in <module>
    from .base import expose, expose_plugview, Admin, BaseView, AdminIndexView  # noqa: F401
  File "/usr/local/lib/python2.7/dist-packages/flask_admin/base.py", line 6, in <module>
    from flask import Blueprint, current_app, render_template, abort, g, url_for
  File "/usr/local/lib/python2.7/dist-packages/flask/__init__.py", line 20, in <module>
    from .app import Flask
  File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 69, in <module>
    from .wrappers import Request
  File "/usr/local/lib/python2.7/dist-packages/flask/wrappers.py", line 14, in <module>
    from werkzeug.wrappers.json import JSONMixin as _JSONMixin
ImportError: No module named json

到目前为止尝试过这些东西：


$ sudo apt-get install build-essential autoconf libtool pkg-config python-opengl python-imaging python-pyrex python-pyside.qtopengl idle-python2.7 qt4-dev-tools qt4-designer libqtgui4 libqtcore4 libqt4-xml libqt4-test libqt4-script libqt4-network libqt4-dbus python-qt4 python-qt4-gl libgle3 python-dev

sudo pip install -U Werkzeug==0.14.1

sudo pip install -U Jinja2==2.10.1

也尝试过

pip install jsonate

pip install json # (this did not work)

 python
Python 2.7.12 (default, Nov 12 2018, 14:36:49)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import json
>>> exit()

到目前为止没有任何效果。

Answer 1

只是升级烧瓶。您可以使用此命令：

sudo pip install --upgrade Flask

Answer 2

这个问题是已知的，并且在 ASF Mail Archives

中进行了描述

We removed the incompatible Werkzeug library from apache master this weekend. It caused Airflow installations to fail.

要解决，请手动安装正确版本的 werkzeug 库：

pip install werkzeug>=0.15.0

如邮件列表中所述，这似乎是一个临时问题，此解决方案是一种解决方法。 1.10.3版本遇到问题

Answer 3

在 Mac 安装 apache-airflow 时，出现以下错误：

错误：apache-airflow 1.10.3 要求 jinja2<=2.10.0,>=2.7.3，但您将拥有不兼容的 jinja2 2.10.1。错误：apache-airflow 1.10.3 要求 werkzeug<0.15.0,>=0.14.1，但您将拥有不兼容的 werkzeug 0.15.4。

Re-installing werkzeug 和 jinja 为我工作。

pip install jinja2>=2.10.0
pip install werkzeug>=0.15.0

Answer 4

sudo pip install --upgrade Flask 对我有用

Apache Airflow : airflow initdb results in "ImportError: No module named json"

Apache Airflow : airflow initdb results in "ImportError: No module named json"

json

python-2.7

airflow

ubuntu-16.04