diff --git a/src/_pytest/compat.py b/src/_pytest/compat.py
index 6a62e88cf..f0b0d548f 100644
--- a/src/_pytest/compat.py
+++ b/src/_pytest/compat.py
@@ -307,7 +307,7 @@ def get_real_method(obj, holder):
     return obj
 
 
-def getfslineno(obj):
+def getfslineno(obj) -> Tuple[Union[str, py.path.local], int]:
     # xxx let decorators etc specify a sane ordering
     obj = get_real_func(obj)
     if hasattr(obj, "place_as"):
diff --git a/src/_pytest/python.py b/src/_pytest/python.py
index bc35ccf5f..3d2916c83 100644
--- a/src/_pytest/python.py
+++ b/src/_pytest/python.py
@@ -12,6 +12,7 @@ from functools import partial
 from textwrap import dedent
 from typing import List
 from typing import Tuple
+from typing import Union
 
 import py
 
@@ -280,15 +281,16 @@ class PyobjMixin(PyobjContext):
         parts.reverse()
         return ".".join(parts)
 
-    def reportinfo(self) -> Tuple[str, int, str]:
+    def reportinfo(self) -> Tuple[Union[py.path.local, str], int, str]:
         # XXX caching?
         obj = self.obj
         compat_co_firstlineno = getattr(obj, "compat_co_firstlineno", None)
         if isinstance(compat_co_firstlineno, int):
             # nose compatibility
-            fspath = sys.modules[obj.__module__].__file__
-            if fspath.endswith(".pyc"):
-                fspath = fspath[:-1]
+            file_path = sys.modules[obj.__module__].__file__
+            if file_path.endswith(".pyc"):
+                file_path = file_path[:-1]
+            fspath = file_path  # type: Union[py.path.local, str]
             lineno = compat_co_firstlineno
         else:
             fspath, lineno = getfslineno(obj)