I have the following (example) code:
class _1DCoord():
def __init__(self, i):
self.i = i
def pixels(self):
return self.i
def tiles(self):
return self.i/TILE_WID开发者_高级运维TH
What I want to do is this:
>>> xcoord = _1DCoord(42)
>>> print xcoord
42
But instead I see this:
>>> xcoord = _1DCoord(42)
>>> print xcoord
<_1DCoord instance at 0x1e78b00>
I tried using __repr__ as follows:
def __repr__(self):
return self.i
But __repr__ can only return a string. Is there any way to do what I'm trying to do, or should I just give up and use pixels()?
def __repr__(self):
return repr(self.i)
I believe this is what you're looking for:
class _1DCoord():
def __init__(self, i):
self.i = i
def __repr__(self):
return '_1DCoord(%i)' % self.i
def __str__(self):
return str(self.i)
>>> xcoord = _1DCoord(42)
>>> xcoord
_1DCoord(42)
>>> print xcoord
42
But
__repr__
can only return a string.
So just do
def __repr__(self):
return str(self.i) # or repr(self.i)
Or, to mimic the usual Python format:
def __repr__(self):
return '_1DCoord(%i)' % self.i
The repr method allows you to define your own string representation of a class instance. It must take only self as a parameter and return a string. Ideally, the repr method should return the information required to build a copy of the instance.To use the repr method do something like:
def __repr__(self):
return f"{self.instance}"
This allows you to return a string representation of your attribute because repr is an inbuilt method in python classes.
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