Dual and multiple licenses

 find . -name PKG-INFO -print0 | xargs -0 perl -ne 'print "$1\n" if /^License: (.+)/' | sort | uniq -c | sort -n | grep -i ' or '
      1 LGPL 2.1 or later
      2 Apache-2.0 OR MIT
      2 GNU AGPLv3+ or BSD
      2 GNU GPLv2 or any later version
      2 GPL-2.0-only OR LGPL-2.1-or-later
      2 LGPL 2.1 or later, see also http://cthedot.de/cssutils/
      2 License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)
      2 MIT or Apache-2.0
      3 MIT or PSF License
      4 BSD 3-Clause License or Apache License, Version 2.0
      4 GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
      4 LGPL with exceptions or ZPL
      4 MIT or Apache License, Version 2.0
      4 MPL-1.1 OR GPL-2.0-only OR LGPL-2.0-or-later
      5 PSF or ZPL
      6 Apachev2 or later or GPLv2
      8 Universal Permissive License 1.0 or Apache License 2.0
     10 BSD or Apache License, Version 2.0

$ find . -name PKG-INFO -print0 | xargs -0 perl -ne 'print "$1\n" if /^License: (.+)/' | sort | uniq -c | sort -n | grep -i ' and '
      1 dual license GPLv2+ and Apache v2
      1 public domain and BSD
      2  BSD-3-Clause and Public-Domain
      2 COMMON DEVELOPMENT AND DISTRIBUTION LICENSE (CDDL) Version 1.0
      2 Copyright (c) 2010-2017 Kivy Team and other contributors
      2 Copyright (c) 2017 by Nicola Iarocci and contributors.  See AUTHORS
      2 FreeBSD and LGPLv3+
      2 GPL license with a special exception which allows to use PyInstaller to build and distribute non-free programs (including commercial ones)
      2 W3C SOFTWARE NOTICE AND LICENSE
      4 PSFL 2 and ZPL 2.1
     10 Apache License 2.0 and MIT License