Switch py dependency to >= 1.5.2. Fixes #4252 differently. (#4256)

gvanrossum · web-flow · commit 5168c2580ff8 · 2017-11-15T18:36:58.000-08:00
Fixes #4252 differently. According to pytest-dev/py#169 (comment), py 1.5.2 has been pushed out that fixes this issue.
diff --git a/test-requirements.txt b/test-requirements.txt
@@ -8,4 +8,4 @@ pytest-xdist>=1.18
 pytest-cov>=2.4.0
 typed-ast>=1.1.0,<1.2.0
 typing>=3.5.2; python_version < '3.5'
-py<1.5.0; sys_platform == 'win32'
+py>=1.5.2
