Find a string from a column of one table in another table

[deanhystad]

I was getting a warning that I ignored in my code. It doesn't cause any problems in my example, but it has potential for causing very confusing behaviors.

In my example I did this to make a new dataframe for suppliers:

supplier_table = product_table[["Description"]]

This does not create a new dataframe. It creates a slice of the product_table dataframe. What I should have done is make a copy of that slice so that supplier_table and product_table are independent.

supplier_table = product_table[["Description"]].copy()