Data frames can be subset by a chosen value using $==.$

Ex: df$[$df$.$x $==5]$ gives all the rows in the data frame df for which the column x has a value of $5.$

Write a program that performs the following tasks:

Load the file mtcars.csv into a data frame called df

Create a new data frame df$\_$cyl by subsetting the data frame based on a user defined value for the column cyl$.$

Print the shape of the new data frame.

Ex: If the input is:

$4$

the output is:

$(11,12)$