Harvard Pep Squad
Recall the 2004 Harvard–Yale prank, in which the “Harvard Pep Squad” (i.e., Yale) tricked Harvard fans into spelling “GO HARVARD” with red placards, held above their heads like a bitmap:
Let’s simplify the prank a bit. Included in squad/
are six .txt
files, each of which contains a “bitmap” that’s 6 “pixels” tall and 6 “pixels” wide, wherein each “pixel” is implemented as a hash (#
) or a space (
). Assume that each hash represents a red placard and that each space represents a white placard.
-
(4 points.) Let’s determine how many red placards Yale should bring to Harvard for a given bitmap. In
squad/red.py
, write a program that prints the number of hashes therein. The program should accept as its sole command-line argument the name of a.txt
file. For instance, executingpython red.py G.txt
in
squad/
should print the number of hashes inG.txt
. If the program is executed without a command-line argument or more than one command-line argument, it should exit with a status code of1
.
-
(6 points.) Let’s give Harvard fans something to spell. In
squad/prank.py
, implement a program that prints, from left to right, the contents of its command-line arguments, with one column of spaces between each letter. No need for additional spaces between words. For instance, executingpython prank.py G.txt O.txt H.txt AR.txt VA.txt RD.txt
in
squad/
should presumably print:#### #### # # ## ##### # # ## ##### ##### # # # # # # # # # # # # # # # # # # # # # ###### # # # # # # # # # # # # # ### # # # # ###### ##### # # ###### ##### # # # # # # # # # # # # # # # # # # # # #### #### # # # # # # ## # # # # #####
Well, ideally.