Exercise $3($Practice with Python$)$

The files density$\_$water.dat and density$\_$air.dat files contain data about the density of water and air

$($respectively$)$ for different temperatures. The data files have some comment lines starting with # and some

lines are blank. The rest of the lines contain density data: the temperature in the first column and the

corresponding density in the second column. Write a program to read the data in such a file and plot the

density versus the temperature as distinct $($small$)$ circles for each data point.

Let the program take the name of the data file as command$-$line argument. $($use the function name:

read$\_$density$\_$data$)$

Help me please