[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypyc/build_setup.py

@@ -1,6 +1,6 @@
+import os
 import platform
 import sys
-import os
 
 try:
     # Import setuptools so that it monkey-patch overrides distutils