The software is distributed under an MIT licence. The text is as follows
Copyright (c) 2013-2016 Python Charmers Pty Ltd, Australia Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Python Charmers Pty Ltd, Australia, and Python Charmers Pte Ltd, Singapore. http://pythoncharmers.com
range()functions are derived from Ryan Kelly’s
magicsupermodule and Dan Crosta’s
lib3to2, and parts of Armin Ronacher’s
python_2_unicode_compatibledecorator is from Django. The
with_metaclassdecorators are from Jinja2.
exec_function and some others in
future.utilsare from the
sixmodule by Benjamin Peterson.
raise_with_tracebackfunctions were contributed by Jeff Tratner.
raise_fromwas contributed by Varriount (GitHub).
past.translationis inspired by and borrows some code from Sanjay Vinip’s