A minor correction in input usage.

prescott/prescott.py

@@ -508,7 +508,7 @@ def main():
     print("@> Name of the output file          : {}".format(args.outputfile))
     # End of argument parsing!
 
-    protein = os.path.splitext(args.escottfile)[0]
+    protein = os.path.splitext(os.path.basename(args.escottfile))[0]
     outfile = os.path.splitext(args.outputfile)[0]
 
     # Check if file exists