class - use python to add two custom datatypes? -


class myint(object) :       #  i'm trying add 2 custom types (myint)      #  , have sum same type. (myint)       #  doing wrong?        def __init__(self, x):        self.x = x       def __add__(self,other):        return self.x + other      = myint(1)  b = myint(1)  print + 1    # ---->  2  print type(a)  # ---->  "class '__main__.myint'    #c = + b     #  won't work    #print + b    #  won't work 

there error in __add__, should be:

def __add__(self,other):    return myint(self.x + other.x)    

then, can add myint instances:

a = myint(1) b = myint(1)  c = + b print type(c)  # prints <class '__main__.myint'> print c.x  # prints 2 

note, a + 1 won't work since 1 not type of myint. if want support it, you'll need improve __add__ method , define how behave in case of different types of other argument.


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