Q$6$: Extract information about the level of each course

Create a function that creates a new column $($ classlevel$)$ in in your dataframe that contains information about the "level" of each course. For example, the row with classcode $=$ INST$201$ should be associated with classlevel $=200.$

IMPORTANT NOTE: The input data here depends on the output of Q$1$: do NOT attempt until you've gotten Q$1$ right! Similarly, if you shutdown your notebook and come back here to resume your work, you'll need to run the cells for Q$1$ before you resume here.

ALSO: make sure that your column name is exactly classlevel $($pay attention to spaces, etc.$)$ so that the test cases will pass.

You will first need to define a function level$()$ that takes this input:

$x(str)-$ a "classcode" entry

And return:

result $($ str$)-$ the corresponding "classlevel" value

Hint: There are a number of valid way to solve this, including string parsing, dictionaries, and conditionals.

Then you need to define a function df$\_$course$\_$level$().$ It should take this input:

df $($dataf rame$)-$ a dataframe $($output of Q$1)$

And return:

result $($dataf rame$)-$ a modified dataframe with a classlevel column with appropriate values