name 'StandradScaler' is not defined

The error message "name 'StandardScaler' is not defined" usually occurs when the StandardScaler class from the scikit-learn library is not imported or not defined in your code.

To resolve this issue, you need to import the StandardScaler class from the scikit-learn library. You can do this by adding the following line at the beginning of your code:

from sklearn.preprocessing import StandardScaler

Make sure you have scikit-learn installed in your environment. You can install it using the following command:

pip install scikit-learn

After importing the StandardScaler class, you should be able to use it in your code without any errors.