$4\mathrm{.}1$ Task

$$ Create a program that reads a filename from the command line and prints the number of unique words, total number of words $($not unique$),$ characters $($includ$-$ ing spaces$)$ and lines in that file. It must be called wc$.$py and must be run like so:

python wc$.$py filename

where filename is the actual name of the file to read.

As an example, download this sample file: heaalthyeating.txt$.$ you can use this to test. I may run it with a different file.

Then,whenyourprogramisrunwiththisfile$($python wc$.$py healthyeating.txt$),$ theoutputoftheprogramshouldbeintheballparkoflines:$42,$ unique:$429,$ words:$819,$ chars:$4$ The numbers may vary a bit, but not a lot.

$$ Your program must print the most common and least common word. You must usedictionariesforthis.Usingthehealthyeating.txtfile,python wc$.$py healthyeating.txt will print:

lines:$42,$ unique:$429,$ words:$819,$ chars:$4878$

Most frequent word:and $(33$ times$),$ Less frequent word:People $(1$ times$).$

Again, your output may be slightly different than this depending on what you consider a word. $($e$.$g$.$ you turn all words to lowercase or something like that$).$