先定义一个类:
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class Point: def __init__( self , x, y): self .x = x self .y = y |
下面我们使用9种方法来生成新的对象:
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point1 = Point( 1 , 2 ) point2 = eval ( "{}({}, {})" . format ( "Point" , 1 , 2 )) point3 = globals ()[ "Point" ]( 1 , 2 ) point4 = locals ()[ "Point" ]( 1 , 2 ) point5 = getattr (sys.modules[__name__], "Point" )( 1 , 2 ) point6 = copy.deepcopy(point1) point7 = point1.__class__( 1 , 2 ) point8 = type ( 'Point' , (Point, ), {})( 1 , 2 ) point9 = types.new_class( 'Point' , (Point, ), {})( 1 , 2 ) |
PS: 需要导入sys和types模块·
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