  
  class FakeSMTPChannel(smtpd.SMTPChannel):
  
      def collect_incoming_data(self, data):
          # Ignore decode error in SSL/TLS connection tests as the test only
          # cares whether the connection attempt was made.
          with suppress(UnicodeDecodeError):
              smtpd.SMTPChannel.collect_incoming_data(self, data)
  
      def smtp_AUTH(self, arg):
          if arg == 'CRAM-MD5':
              # This is only the first part of the login process. But it's enough
 
</s> remove             with suppress(Exception):
 </s> add             try: </s> remove                 with suppress(ValueError):
 </s> add                 try:
        try:
  
  class FakeSMTPChannel(smtpd.SMTPChannel):
  
      def collect_incoming_data(self, data):
        try:
        try:
        try:
              smtpd.SMTPChannel.collect_incoming_data(self, data)
  
      def smtp_AUTH(self, arg):
          if arg == 'CRAM-MD5':
              # This is only the first part of the login process. But it's enough
keep keep keep keep replace replace replace keep keep keep keep keep
 Reverted "Fixed #27818 -- Replaced try/except/pass with contextlib.suppress()."

This reverts commit 550cb3a365dee4edfdd1563224d5304de2a57fda
because try/except performs better. 
tests/mail/tests.py