apply isort and black formatters, add format checking to CI

python/tests/auditwheels.py

@@ -1,10 +1,8 @@
-
 import os
 import platform
 import subprocess
 import sys
 
-
 if __name__ == "__main__":
     assert len(sys.argv) == 2
     workspacedir = sys.argv[1]
@@ -13,5 +11,13 @@ if __name__ == "__main__":
         if relpath.startswith("deltachat"):
             p = os.path.join(workspacedir, relpath)
             subprocess.check_call(
-                ["auditwheel", "repair", p, "-w", workspacedir,
-                 "--plat", "manylinux2014_" + arch])
+                [
+                    "auditwheel",
+                    "repair",
+                    p,
+                    "-w",
+                    workspacedir,
+                    "--plat",
+                    "manylinux2014_" + arch,
+                ]
+            )