The following attribution text was taken from pycurl 7.19.5.1.

Pycurl is dual-licensed under the LGPL and an MIT/X derivative license based on the curl license.  Sun chose the MIT-style license, and the OSR review stipulated that the following notice be prepended to the license:

Oracle elects to have this file available under and governed by the MIT-like license (see below for full icense text). However, the following notice accompanied the original version of the file:

PycURL is dual licensed under the LGPL and an MIT/X derivative license based on the cURL license.  A full copy of the LGPL license is included in the file COPYING-LGPL.  A full copy of the MIT/X derivative license is included in the file COPYING-MIT.  You can redistribute and/or modify PycURL according to the terms of either license.

 There is a README file in the source tarball with the following text:

License

-------

Copyright (C) 2013-2014 by Oleg Pudeyev <oleg at bsdpower.com>

All rights reserved.

PycURL is dual licensed under the LGPL and an MIT/X derivative license

based on the cURL license.  A full copy of the LGPL license is included

in the file COPYING-LGPL.  A full copy of the MIT/X derivative license is

included in the file COPYING-MIT.  You can redistribute and/or modify PycURL

according to the terms of either license.

The COPYING-MIT file has the following contents:

 COPYRIGHT AND PERMISSION NOTICE

Copyright (C) 2001-2008 by Kjetil Jacobsen <kjetilja at gmail.com>

Copyright (C) 2001-2008 by Markus F.X.J. Oberhumer <markus at oberhumer.com>

Copyright (C) 2013-2014 by Oleg Pudeyev <oleg at bsdpower.com>

The COPYING-LGPL file has the usual LGPL 2.1:

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