import os 

# the first date is at the end because of the way python sorts lists
# hd1.mp4 is larger than hd1(*).mp4
dates = ["07-25", "07-28", "08-01", "08-12", "08-15", "08-19", "08-22", "07-22"]
course = "comp4610" 

# hold all file names
f = []
# walk through files in current directory
for (_, _, files) in os.walk("./"):
    # hd(1) is the format of files we want
    files = filter(lambda x: x[0] == 'h', files)
    f.extend(files)
    break

for i, f in enumerate(sorted(files)):
    name = course + "-" + dates[i] + ".mp4"
    os.rename(f, name)