問題現象

在安裝Superset執(zhí)行命令superset db upgrade時拋出如下異常：

Traceback (most recent call last):
  File "/home/alphatan/anaconda3/envs/beacon-library/bin/superset", line 18, in <module>
    from superset.cli import superset
  File "/home/alphatan/anaconda3/envs/beacon-library/lib/python3.6/site-packages/superset/__init__.py", line 21, in <module>
    from superset.app import create_app
  File "/home/alphatan/anaconda3/envs/beacon-library/lib/python3.6/site-packages/superset/app.py", line 21, in <module>
    import wtforms_json
ModuleNotFoundError: No module named 'wtforms_json'

解決方案

pip install WTForms-JSON