Update for mypy.

pypa · Oct 2, 2017 · 6a0d3aa · 6a0d3aa
1 parent 3498b19
commit 6a0d3aa
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/pip/_internal/vcs/__init__.py b/src/pip/_internal/vcs/__init__.py
@@ -167,7 +167,7 @@ class VersionControl(object):
     # List of supported schemes for this Version Control
     schemes = ()  # type: Tuple[str, ...]
     # Iterable of environment variable names to pass to call_subprocess().
-    unset_environ = ()
+    unset_environ = ()  # type: Tuple[str, ...]
     default_arg_rev = None  # type: Optional[str]
 
     def __init__(self, url=None, *args, **kwargs):