I have a small Python program, which uses a Google Maps API secret key.  I'm getting ready to check-in my code, and I don't want to include the secret key in SVN.  
In the canonical PHP app you put secret keys, database passwords, and other app specific config in LocalSettings.php.  Is there a similar file/location which Python programmers expect to find and modify?
No, there's no standard location - on Windows, it's usually in the directory os.path.join(os.environ['APPDATA'], 'appname') and on Unix it's usually os.path.join(os.environ['HOME'], '.appname').
Where to store secret keys and password in Python