Orange3导入compute_CD报错ImportError，无法绘制CD图求解决

问题场景 #

已通过!pip install orange3安装Orange3，执行以下代码时触发ImportError：

import Orange
from Orange.evaluation import compute_CD

报错信息 #

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-30-8ddf671e8aa9> in <module>
      1 from scipy.stats import wilcoxon,friedmanchisquare,rankdata
      2 import Orange
----> 3 from Orange.evaluation import compute_CD

ImportError: cannot import name 'compute_CD' from 'Orange.evaluation' (/usr/local/lib/python3.8/dist-packages/Orange/evaluation/__init__.py)

---------------------------------------------------------------------------
NOTE: If your import is failing due to a missing package, you can
manually install dependencies using either !pip or !apt.

To view examples of installing some common dependencies, click the
"Open Examples" button below.
---------------------------------------------------------------------------

解决方案 #

• 核心原因：Orange3版本迭代后，compute_CD的模块位置变更，不再直接属于Orange.evaluation，而是移至Orange.evaluation.scoring子模块。
• 修正后的导入代码：

import Orange
from Orange.evaluation.scoring import compute_CD

• 额外排查步骤：
  1. 查看当前Orange版本：执行print(Orange.__version__)，3.30及以上版本均需使用新路径。
  2. 若旧版本仍报错，升级Orange3：!pip install --upgrade orange3

内容的提问来源于stack exchange，提问作者Natássia Medeiros Siqueira