Q:

Google webmasters API authentication

I'm using these scripts: http://googlewebmastercentral.blogspot.co.uk/2011/12/download-search-queries-data-using.html
to get search results queries however when I run the script appears:
line 793, in ProgrammaticLogin
    raise BadAuthentication, 'Incorrect username or password'
gdata.service. BadAuthentication: Incorrect username or password
My user and password are correct however keep appearing that error.  Is this API does not longer work or Do I have to do something else to allow me using the Google webmasters API? 
I'd appreciate any help you can provide me

A:

The API you're querying was deprecated a few months ago.  You can soon achieve the same thing with the Google Search Console API, specifically, the webmasters.searchanalytics.query endpoint.  See the Google API Explorer for more details (search for Webmaster Tools).