DataFrame ToString() method uses incorrect padding #6672
Description
Describe the bug
DataFrame ToString() method doesn't use separators between columns, so the output is very difficult to read.
For example for the dataframe:
A B C
3 16 26
3 19 22
3 11 28
6 11 25
6 10 23
6 13 21
6 17 20
9 18 28
The output looks like this:
