This project allows Python code to extend built-in types.
If that's a good idea or not, you tell me. The first need this project attended was allowing a Python assertion library to implement a similar API to RSpec Expectations and should.js. But people got creative and used it to among other things spy on things or to integrate profiling.
It basically allows you to patch built-in objects, declared in C through python. Just like this:
from forbiddenfruit import curse def words_of_wisdom(self): return self * "blah " curse(int, "words_of_wisdom", words_of_wisdom) assert (2).words_of_wisdom() == "blah blah "
from forbiddenfruit import curse def hello(self): return "blah" curse(str, "hello", classmethod(hello)) assert str.hello() == "blah"
If you want to free your object from a curse, you can use the
function. Just like this:
from forbiddenfruit import curse, reverse curse(str, "test", "blah") assert 'test' in dir(str) # Time to reverse the curse reverse(str, "test") assert 'test' not in dir(str)
reverse() only deletes attributes. If you
curse()'d to replace
a pre-existing attribute,
reverse() won't re-install the existing attribute.
cursed() acts as a context manager to make a
curse(), and then
it on exit. It uses
so on Python 3.2+ it can also be used as a function decorator. Like so:
from forbiddenfruit import cursed with cursed(str, "test", "blah"): assert str.test == "blah" assert "test" not in dir(str) def function(): assert str.test == "blah" function() assert "test" not in dir(str)
Forbbiden Fruit is tested on CPython 2.7, 3.0, and 3.3-3.7.
Since Forbidden Fruit is fundamentally dependent on the C API, this library won't work on other python implementations, such as Jython, pypy, etc.
Copyright (C) 2013,2019 Lincoln Clarete firstname.lastname@example.org
This software is available under two different licenses at your choice:
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
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You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
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:
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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.
Kimberly Chandler, from The Noun Project