add (overwrite with) mypy stubs, if available

stdlib/2.7/pprint.pyi

@@ -0,0 +1,21 @@
+# Stubs for pprint (Python 2)
+#
+# NOTE: Based on a dynamically typed automatically generated by stubgen.
+
+from typing import IO, Any
+
+def pprint(object: Any, stream: IO[Any] = None, indent: int = 1, width: int = 80,
+           depth: int = None) -> None: ...
+def pformat(object, indent=1, width=80, depth=None): ...
+def saferepr(object): ...
+def isreadable(object): ...
+def isrecursive(object): ...
+
+class PrettyPrinter:
+    def __init__(self, indent: int = 1, width: int = 80, depth: int = None,
+                 stream: IO[Any] = None) -> None: ...
+    def pprint(self, object): ...
+    def pformat(self, object): ...
+    def isrecursive(self, object): ...
+    def isreadable(self, object): ...
+    def format(self, object, context, maxlevels, level): ...