Accept Unicode strings as SMTP TO addresses. Fixes #521270.

2.2.1 candidate.

diff --git a/Lib/smtplib.py b/Lib/smtplib.py
index f024bffc1f56224dad5bd5235a3ed0eb3bbeb555..079f128cc5885c1c34370ded3d65dbcb14305864 100755 (executable)
--- a/Lib/smtplib.py
+++ b/Lib/smtplib.py
@@ -636,7 +636,7 @@ class SMTP:
             self.rset()
             raise SMTPSenderRefused(code, resp, from_addr)
         senderrs={}
-        if type(to_addrs) == types.StringType:
+        if isinstance(to_addrs, types.StringTypes):
             to_addrs = [to_addrs]
         for each in to_addrs:
             (code,resp)=self.rcpt(each, rcpt_options)