.python
Python 3.0a2 (r30a2:59397:59399, Dec  6 2007, 22:34:52) [MSC v.1500 32 
bit (Intel)] on win32
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>>> import getpass
>>> clave = getpass.getpass('PASSWD= ').strip().upper()
PASSWD= Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\python30\lib\getpass.py", line 63, in win_getpass
    pw = pw + c
TypeError: Can't convert 'bytes' object to str implicitly
>>>
 I get the error when I try to type the first letter of a password.