Update README.md

README.md

@@ -25,7 +25,8 @@ Vertex Normals need to be generated before we can work with this dataset, the ea
 import bpy
 import glob
 import pathlib
-if not isdir(outputDir): mkdir(outputDir)
+from os import mkdir
+from os.path import isdir
 importDir = "ply/"
 outputDir = "ply_norm/"
 if not isdir(outputDir): mkdir(outputDir)