pandas add dataframe to the bottom of another

# Basic syntax:
new_dataframe = old_dataframe.filter(['Columns','you','want'], axis=1)

Here is what the above code is Doing:
1. We’re creating a new dataframe called new_dataframe.
2. We’re using the filter method on the old_dataframe.
3. We’re specifying the columns we want to keep in the new_dataframe.
4. We’re specifying that we want to filter the columns on the axis=1.