Make b64encode raises properly a TypeError when altchars is not bytes.
diff --git a/Lib/base64.py b/Lib/base64.py
index 73e9808..e708136 100755
--- a/Lib/base64.py
+++ b/Lib/base64.py
@@ -58,8 +58,8 @@
encoded = binascii.b2a_base64(s)[:-1]
if altchars is not None:
if not isinstance(altchars, bytes_types):
- altchars = TypeError("expected bytes, not %s"
- % altchars.__class__.__name__)
+ raise TypeError("expected bytes, not %s"
+ % altchars.__class__.__name__)
assert len(altchars) == 2, repr(altchars)
return _translate(encoded, {'+': altchars[0:1], '/': altchars[1:2]})
return encoded