Hello,
I’m learning Python from Complete Python Mastery course by Mosh Hamedani.
Kindly suggest some book OR websites to complement.
Thank you 
Wes McKinney, Python for Data Analysis is a popular one.
You can also check out Head First Python.
There is also Python for Everybody by Dr. Charles R. Severance. It’s available from Amazon, but you can also download a PDF from his website.
Anyway, those are the ones in have. No special recommendation for this course.