hvplot运行失败求助：箱线图代码执行报错排查

运行代码 #

loan_amnt_box = data.hvplot.box(
    y='loan_amnt', subplots=True, by='loan_status', width=300, height=350, 
    title="Loan Status by Loan Amount ", xlabel='Loan Status', ylabel='Loan Amount'
)

installment_box = data.hvplot.box(
    y='installment', subplots=True, by='loan_status', width=300, height=350, 
    title="Loan Status by Installment", xlabel='Loan Status', ylabel='Installment'
)

loan_amnt_box + installment_box

报错信息 #

错误原因及解决方法 #

• 核心问题：同时使用subplots=True和by参数时，hvplot返回的是单个BoxWhisker对象，而非支持+拼接的布局类对象，而BoxWhisker本身不支持+运算符，因此触发AttributeError。
• 解决方法：
  1. 移除subplots=True参数：使用by参数时，hvplot会自动按分组生成子图并返回可直接拼接的Layout对象，修改后代码：

     loan_amnt_box = data.hvplot.box(
         y='loan_amnt', by='loan_status', width=300, height=350, 
         title="Loan Status by Loan Amount ", xlabel='Loan Status', ylabel='Loan Amount'
     )
     
     installment_box = data.hvplot.box(
         y='installment', by='loan_status', width=300, height=350, 
         title="Loan Status by Installment", xlabel='Loan Status', ylabel='Installment'
     )
     
     loan_amnt_box + installment_box
     

  2. 若需保留subplots=True，手动将对象包装进Layout：

     from holoviews import Layout
     
     loan_amnt_box = data.hvplot.box(
         y='loan_amnt', subplots=True, by='loan_status', width=300, height=350, 
         title="Loan Status by Loan Amount ", xlabel='Loan Status', ylabel='Loan Amount'
     )
     
     installment_box = data.hvplot.box(
         y='installment', subplots=True, by='loan_status', width=300, height=350, 
         title="Loan Status by Installment", xlabel='Loan Status', ylabel='Installment'
     )
     
     Layout([loan_amnt_box, installment_box])
     

内容的提问来源于stack exchange，提问作者Michael