Added Usage message to painter script

This commit is contained in:
Andrew Murray 2015-10-10 14:25:08 +11:00
parent 3b121b4513
commit 7e5df09fa9

View File

@ -68,6 +68,10 @@ class PaintCanvas(Canvas):
root = Tk() root = Tk()
if len(sys.argv) != 2:
print("Usage: painter file")
sys.exit(1)
im = Image.open(sys.argv[1]) im = Image.open(sys.argv[1])
if im.mode != "RGB": if im.mode != "RGB":