STY: use closing statement

tests/test_file.py

@@ -50,9 +50,8 @@ def setup_module():
 
 
 def setup():
-    upload_file = open("test.dat", "w")
+    with open("test.dat", "w") as upload_file:
         upload_file.write("hello world\n")
-    upload_file.close()
     os.makedirs("testfolder/subfolder")
     with open("testfolder/test1.dat", "w") as upload_file:
         upload_file.write("hello world\n")
@@ -397,9 +396,8 @@ def test_consistency_file_was_modified():
 @with_setup(setup, teardown)
 def test_consistency_file_does_not_exist():
     try:
-        upload_file = open("test.dat", "w")
+        with open("test.dat", "w") as upload_file:
             upload_file.write("hello world\n")
-        upload_file.close()
         file_ = models.File(name="TestConsistency1",
                             description="Testfile Desc",
                             path="debug/test_file_storage_consistency",