Update test_lzma.py

Author: sobolevn

Lib/test/test_lzma.py

@@ -539,16 +539,12 @@ class FileTestCase(unittest.TestCase):
     def test_init(self):
         with LZMAFile(BytesIO(COMPRESSED_XZ)) as f:
             self.assertIsInstance(f, LZMAFile)
-            self.assertEqual(f.mode, "rb")
         with LZMAFile(BytesIO(), "w") as f:
             self.assertIsInstance(f, LZMAFile)
-            self.assertEqual(f.mode, "wb")
         with LZMAFile(BytesIO(), "x") as f:
             self.assertIsInstance(f, LZMAFile)
-            self.assertEqual(f.mode, "wb")
         with LZMAFile(BytesIO(), "a") as f:
             self.assertIsInstance(f, LZMAFile)
-            self.assertEqual(f.mode, "wb")
 
     def test_init_with_PathLike_filename(self):
         filename = FakePath(TESTFN)
@@ -573,30 +569,23 @@ def test_init_mode(self):
         with TempFile(TESTFN):
             with LZMAFile(TESTFN, "r") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "rb")
             with LZMAFile(TESTFN, "rb") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "rb")
             with LZMAFile(TESTFN, "w") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "wb")
             with LZMAFile(TESTFN, "wb") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "wb")
             with LZMAFile(TESTFN, "a") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "wb")
             with LZMAFile(TESTFN, "ab") as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, "wb")
 
     def test_init_with_x_mode(self):
         self.addCleanup(unlink, TESTFN)
         for mode in ("x", "xb"):
             unlink(TESTFN)
             with LZMAFile(TESTFN, mode) as f:
                 self.assertIsInstance(f, LZMAFile)
-                self.assertEqual(f.mode, 'wb')
             with self.assertRaises(FileExistsError):
                 LZMAFile(TESTFN, mode)