Mercurial > hg > config

annotate python/example/aspects.py @ 859:b8510769d001

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
py3 compat
author Jeff Hammel <k0scist@gmail.com>
date Wed, 11 Apr 2018 12:28:37 -0700
parents 0fffb3560641
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
124
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
1 class MakePythonLikeJavascript(object):
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
2 def __getattr__(self, name):
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
3 return undefined
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
4
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
5 class undefined(MakePythonLikeJavascript):
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
6 def __nonzero__(self):
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
7 return False
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
8 def __str__(self):
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
9 return 'undefined'
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
10 __repr__ = __str__
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
11 undefined = undefined() # singleton
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
12
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
13 if __name__ == '__main__':
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
14 foo = MakePythonLikeJavascript()
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
15 foo.bar = 5
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
16 print foo.bar
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
17 print foo.fleem
2f0baf81372f added illustration of doing aspects in python
Jeff Hammel <jhammel@mozilla.com>
parents:
diff changeset
18 print foo.fleem.flarg