Review changes

- yield from
- use sha1 instead of md5 in test (algorithm guarantee of hashlib)

Author: romuald

Lib/base64.py

@@ -312,8 +312,7 @@ def _85buffer_iter_words(b):
 
     offset = 0
     for _ in range(n1):
-        for c in unpack512(b[offset:offset+512]):
-            yield c
+        yield from unpack512(b[offset:offset+512])
         offset += 512
 
     for _ in range(n2):

Lib/test/test_base64.py

@@ -553,10 +553,10 @@ def test_b85encode_large_input(self):
         result = base64.b85encode(large_input)
 
         # since the result is to large to fit inside a test,
-        # use a hash method to validate the test
+        # use a hash method to validate the value
         self.assertEqual(len(result), 784)
-        self.assertEqual(hashlib.md5(result).hexdigest(),
-                         "0537cfca1aed7495e80d3328e9ef3008")
+        self.assertEqual(hashlib.sha1(result).hexdigest(),
+                         "01a925210f86cf17dece89052406fbd68edb750e")
 
     def test_z85encode(self):
         eq = self.assertEqual