Mercurial > hg > config

comparison python/example/abstract.py @ 525:37f8bc525888

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
-> example
author Jeff Hammel <jhammel@mozilla.com>
date Tue, 24 Sep 2013 12:32:50 -0700
parents python/abstract.py@fe8befc5bdfc
children 9149b35b8a2a
comparison
equal deleted inserted replaced
524:dbe9086643bf 525:37f8bc525888
1
2 def abstractmethod(method):
3 line = method.func_code.co_firstlineno
4 filename = method.func_code.co_filename
5 def not_implemented(*args, **kwargs):
6 raise NotImplementedError('Abstract method %s at File "%s", line %s should be implemented by a concrete class' % (repr(method), filename, line))
7 return not_implemented
8
9 class AbstractBaseClass(object):
10
11 @abstractmethod
12 def foo(self, arg):
13 """foo does such and such"""
14
15 @abstractmethod
16 def bar(self):
17 """bar does something else"""
18
19 class ConcreteClass(AbstractBaseClass):
20
21 def foo(self, arg):
22 print 'hello'
23
24 if __name__ == '__main__':
25 c = ConcreteClass()
26 c.foo(1)
27 a = AbstractBaseClass()
28 try:
29 a.foo(1)
30 except NotImplementedError, e:
31 print e
32 try:
33 a.bar()
34 except NotImplementedError, e:
35 print e
36 c.foo(1)
37 a.foo(1)
38
39