Fix few typos.

Lib/email/_parseaddr.py

@@ -178,7 +178,7 @@ class AddrlistClass:
     front of you.
 
     Note: this class interface is deprecated and may be removed in the future.
-    Use rfc822.AddressList instead.
+    Use email.utils.AddressList instead.
     """
 
     def __init__(self, field):

Lib/imaplib.py

@@ -1385,7 +1385,7 @@ def Time2Internaldate(date_time):
     """Convert date_time to IMAP4 INTERNALDATE representation.
 
     Return string in form: '"DD-Mmm-YYYY HH:MM:SS +HHMM"'.  The
-    date_time argument can be a number (int or float) represening
+    date_time argument can be a number (int or float) representing
     seconds since epoch (as returned by time.time()), a 9-tuple
     representing local time (as returned by time.localtime()), or a
     double-quoted string.  In the last case, it is assumed to already

Lib/test/test_ast.py

@@ -290,7 +290,7 @@ class AST_Tests(unittest.TestCase):
         self.assertEqual(x.body, body)
 
     def test_nodeclasses(self):
-        # Zero arguments constructor explicitely allowed
+        # Zero arguments constructor explicitly allowed
         x = ast.BinOp()
         self.assertEqual(x._fields, ('left', 'op', 'right'))
 

Modules/Setup.dist

@@ -291,7 +291,7 @@ _symtable symtablemodule.c
 #syslog syslogmodule.c		# syslog daemon interface
 
 
-# Curses support, requring the System V version of curses, often
+# Curses support, requiring the System V version of curses, often
 # provided by the ncurses library.  e.g. on Linux, link with -lncurses
 # instead of -lcurses).
 #