- fp = open(sys.argv[1], "r")
-except IOError:
- print sys.argv[0] + ": Error - couldn't open file " + sys.argv[1] + "!"
+ flashseqs = readMHXFile(sys.argv[1])
+except IOError as error:
+ print sys.argv[0] + ": Error - couldn't open file " + error.filename + "!"