Forwarded: no, already fixed in experimental

--- a/mpmath/tests/runtests.py
+++ b/mpmath/tests/runtests.py
@@ -73,8 +73,8 @@
     print("")
     if "-py" in sys.argv:
         sys.argv.remove('-py')
-        import py
-        py.test.cmdline.main()
+        import pytest
+        pytest.cmdline.main()
     else:
         import glob
         from timeit import default_timer as clock