In Windows, using python 3.2, the built-input function does not strip the trailing '\r' from the string input:
Python 3.2 (r32:88445, Feb 20 2011, 21:29:02) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> input('Enter > ')
Enter > abcde
'abcde\r'
>>>
This behavior does not appear in IDLE but does appear in a free-standing command window.
While the docs only say that the trailing newline is dropped, the 2.6 docs for raw_input have exactly the same wording and the carriage return is dropped:
Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> raw_input('Enter > ')
Enter > abcde
'abcde'
>>>