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#2
静夜思2011-07-06 18:22
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程序代码：class Test( object ):
""
def __new__( cls, x, **args ):
return object.__new__( cls )
r0 = Test( 4 )
from copy import deepcopy
r = deepcopy( r0 )
""
def __new__( cls, x, **args ):
return object.__new__( cls )
r0 = Test( 4 )
from copy import deepcopy
r = deepcopy( r0 )
报错：
r = deepcopy( r0 )
File "D:\Python25\lib\copy.py", line 189, in deepcopy
y = _reconstruct(x, rv, 1, memo)
File "D:\Python25\lib\copy.py", line 322, in _reconstruct
y = callable(*args)
File "D:\Python25\lib\copy_reg.py", line 92, in __newobj__
return cls.__new__(cls, *args)
TypeError: __new__() takes exactly 2 arguments (1 given)
这是怎么回事？
经测试，__new__( cls, **args ) 这样就可以。多一个参数就不行。