Generating Random Passwords With Python

Every now and then, I need to generate a password for use with something or other that I won't be typing in very often. For maximum security in these situations I like generating a long randomly generated password. Here's a quick Python snippet for generating them:

$ python
Python 2.6.2 (r262:71600, Aug 21 2009, 12:23:57) 
[GCC 4.4.1 20090818 (Red Hat 4.4.1-6)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> file('/dev/random', 'rb').read(12).encode('base64')
'XIUhRiMM/kcmsQl8\n'
>>> file('/dev/random', 'rb').read(12).encode('base64')
'BkgURdSXKORS8In/\n'
>>>

It's such a short snippet that I haven't ever bothered putting it in a script file, I just fire up a Python interpreter and type it from memory.