mypy: use strict optional

pyvisa · Jul 28, 2020 · 85026f3 · 85026f3
1 parent 457f2c6
commit 85026f3
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/setup.cfg b/setup.cfg
@@ -72,6 +72,7 @@ per-file-ignores =
 
 [mypy]
 follow_imports = normal
+strict_optional = True
 
 [mypy-usb.*]
 ignore_missing_imports = True