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|
# mode: run
# __getattribute__ and __getattr__ special methods for a single class.
cdef class just_getattribute:
"""
>>> a = just_getattribute()
>>> a.called
1
>>> a.called
2
>>> a.bar
'bar'
>>> a.called
4
>>> try: a.invalid
... except AttributeError: pass
... else: print("NOT RAISED!")
>>> a.called
6
"""
cdef readonly int called
def __getattribute__(self,n):
self.called += 1
if n == 'bar':
return n
elif n == 'called':
return self.called
else:
raise AttributeError
cdef class just_getattr:
"""
>>> a = just_getattr()
>>> a.called
0
>>> a.called
0
>>> a.foo
10
>>> a.called
0
>>> a.bar
'bar'
>>> a.called
1
>>> try: a.invalid
... except AttributeError: pass
... else: print("NOT RAISED!")
>>> a.called
2
"""
cdef readonly int called
cdef readonly int foo
def __init__(self):
self.foo = 10
def __getattr__(self,n):
self.called += 1
if n == 'bar':
return n
else:
raise AttributeError
cdef class both:
"""
>>> a = both()
>>> (a.called_getattr, a.called_getattribute)
(0, 2)
>>> a.foo
10
>>> (a.called_getattr, a.called_getattribute)
(0, 5)
>>> a.bar
'bar'
>>> (a.called_getattr, a.called_getattribute)
(1, 8)
>>> try: a.invalid
... except AttributeError: pass
... else: print("NOT RAISED!")
>>> (a.called_getattr, a.called_getattribute)
(2, 11)
"""
cdef readonly int called_getattribute
cdef readonly int called_getattr
cdef readonly int foo
def __init__(self):
self.foo = 10
def __getattribute__(self,n):
self.called_getattribute += 1
if n == 'foo':
return self.foo
elif n == 'called_getattribute':
return self.called_getattribute
elif n == 'called_getattr':
return self.called_getattr
else:
raise AttributeError
def __getattr__(self,n):
self.called_getattr += 1
if n == 'bar':
return n
else:
raise AttributeError
|
