Jupyter报错ModuleNotFoundError: No module named ‘altair‘

执行的代码：

import altair as alt

报错内容：

---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[1], line 1
----> 1 import altair as alt
      2 import pandas as pd
      4 source = pd.DataFrame(
      5     [
      6         {
   
   "a": "a1", "b": "b1", "c": "x", "p": "0.14"},
   (...)
     33     ]
     34 )

ModuleNotFoundError: No module named 'altair'

解决：