diff --git a/setup.py b/setup.py
index b830492..03ee47a 100644
--- a/setup.py
+++ b/setup.py
@@ -3,12 +3,15 @@ from setuptools import setup, find_packages
 install_requires = ["execnet>=1.1", "pytest>=3.6.0", "pytest-forked", "six"]
 
 
+with open("README.rst") as f:
+    long_description = f.read()
+
 setup(
     name="pytest-xdist",
     use_scm_version={"write_to": "xdist/_version.py"},
     description="pytest xdist plugin for distributed testing"
     " and loop-on-failing modes",
-    long_description=open("README.rst").read(),
+    long_description=long_description,
     license="MIT",
     author="holger krekel and contributors",
     author_email="pytest-dev@python.org,holger@merlinux.eu",
diff --git a/testing/acceptance_test.py b/testing/acceptance_test.py
index e0d4770..9a8e42b 100644
--- a/testing/acceptance_test.py
+++ b/testing/acceptance_test.py
@@ -490,9 +490,8 @@ def test_session_hooks(testdir):
                 name = "worker"
             else:
                 name = "master"
-            f = open(name, "w")
-            f.write("xy")
-            f.close()
+            with open(name, "w") as f:
+                f.write("xy")
             # let's fail on the worker
             if name == "worker":
                 raise ValueError(42)
diff --git a/testing/test_remote.py b/testing/test_remote.py
index 42b28a7..649739f 100644
--- a/testing/test_remote.py
+++ b/testing/test_remote.py
@@ -153,7 +153,6 @@ class TestReportSerialization:
         for i in range(len(a_entries)):
             assert isinstance(rep_entries[i], ReprEntry)
             assert rep_entries[i].lines == a_entries[i].lines
-            assert rep_entries[i].localssep == a_entries[i].localssep
             assert rep_entries[i].reprfileloc.lineno == a_entries[i].reprfileloc.lineno
             assert (
                 rep_entries[i].reprfileloc.message == a_entries[i].reprfileloc.message