specifying the x, y parameters

[philipuchen]

Plot with specifying the x, y parameters.
The purpose is to solve the seaborn warning when we execute the script in GoogleColab, JupyterNotebook

/Users/lipuchen/venv/lib/python3.7/site-packages/seaborn/_decorators.py:43: FutureWarning: Pass the following variables as keyword args: x, y. From version 0.12, the only valid positional argument will be `data`, and passing other arguments without an explicit keyword will result in an error or misinterpretation.
  FutureWarning

##Before we specify the x, y parameters.

##After we specify the x, y parameters.