Mercurial > hg > config
annotate python/abstract.py @ 375:9314c1008189
aslightly better; still trouble at da end
author | Jeff Hammel <jhammel@mozilla.com> |
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date | Wed, 24 Jul 2013 03:10:27 -0700 |
parents | fe8befc5bdfc |
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1 |
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2 def abstractmethod(method): |
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3 line = method.func_code.co_firstlineno |
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4 filename = method.func_code.co_filename |
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5 def not_implemented(*args, **kwargs): |
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6 raise NotImplementedError('Abstract method %s at File "%s", line %s should be implemented by a concrete class' % (repr(method), filename, line)) |
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7 return not_implemented |
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8 |
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9 class AbstractBaseClass(object): |
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10 |
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11 @abstractmethod |
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12 def foo(self, arg): |
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13 """foo does such and such""" |
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14 |
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15 @abstractmethod |
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16 def bar(self): |
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17 """bar does something else""" |
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18 |
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19 class ConcreteClass(AbstractBaseClass): |
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20 |
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21 def foo(self, arg): |
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22 print 'hello' |
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23 |
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24 if __name__ == '__main__': |
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25 c = ConcreteClass() |
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26 c.foo(1) |
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27 a = AbstractBaseClass() |
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28 try: |
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29 a.foo(1) |
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30 except NotImplementedError, e: |
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31 print e |
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32 try: |
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33 a.bar() |
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34 except NotImplementedError, e: |
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35 print e |
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36 c.foo(1) |
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37 a.foo(1) |
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38 |
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39 |