name 'CountVectorizer' is not defined

The error message "name 'CountVectorizer' is not defined" typically indicates that you are trying to use the `CountVectorizer` class from scikit-learn but you have not imported it or scikit-learn itself.

To resolve this issue, you can add the following import statement at the beginning of your Python script:

from sklearn.feature_extraction.text import CountVectorizer

This will import the `CountVectorizer` class from scikit-learn and make it available for use in your script.

相关问题

name tf is not defined

name tf is not defined 的意思是“名称 tf 未定义”。这通常是因为在代码中使用了名称 tf，但没有定义它。要解决这个问题，需要检查代码中是否有定义名称 tf 的语句，或者是否需要导入相关的库或模块。

name cap is not defined

This error message indicates that the variable "cap" has not been defined in the current scope or context. It may be a typo or missing declaration in the code. To fix this error, you need to declare the variable "cap" and assign it a value before using it in your code.