Error on Porter stemming

giving error on the given line:-

stemmed_tokens = [ps.stem(tokens) for token in new_tokens]

The error is:- ‘list’ doesn’t contain attribute lower.

Hey @sachinrastogi23101997,
Please save the code on the IDE and share the URL here.

http://localhost:8888/notebooks/PycharmProject/practice/Textual%20Data%20cleaning.ipynb

This link will only work in your system. Please share the code as directed above.