How to do operator overloading between two different classes in python
Consider the main class
class point2D:
def __init__(x, y):
self.x = x
self.y = y
def __sub__(self, other):
return vector2D(self.x - other.x, self.y - other.y)
and the subclass:
class vector2D(point2D):
def __add__(self, other):
return vector2D(self.x + other.x, self.y + other.y)
now I want the + operator also to be able to add a vector2D and a point2D object and return a point2D object. And - operator between any of the classes to return vector2D anyway. I would appreciate if you could help me know if/how can I do that in Python 3.*.
python class operator-overloading
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
add a comment |
Consider the main class
class point2D:
def __init__(x, y):
self.x = x
self.y = y
def __sub__(self, other):
return vector2D(self.x - other.x, self.y - other.y)
and the subclass:
class vector2D(point2D):
def __add__(self, other):
return vector2D(self.x + other.x, self.y + other.y)
now I want the + operator also to be able to add a vector2D and a point2D object and return a point2D object. And - operator between any of the classes to return vector2D anyway. I would appreciate if you could help me know if/how can I do that in Python 3.*.
python class operator-overloading
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
1
Why doesvector2Dsubclasspoint2D? A vector is not a point.
– user2357112
Nov 14 '18 at 23:15
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17
add a comment |
Consider the main class
class point2D:
def __init__(x, y):
self.x = x
self.y = y
def __sub__(self, other):
return vector2D(self.x - other.x, self.y - other.y)
and the subclass:
class vector2D(point2D):
def __add__(self, other):
return vector2D(self.x + other.x, self.y + other.y)
now I want the + operator also to be able to add a vector2D and a point2D object and return a point2D object. And - operator between any of the classes to return vector2D anyway. I would appreciate if you could help me know if/how can I do that in Python 3.*.
python class operator-overloading
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
Consider the main class
class point2D:
def __init__(x, y):
self.x = x
self.y = y
def __sub__(self, other):
return vector2D(self.x - other.x, self.y - other.y)
and the subclass:
class vector2D(point2D):
def __add__(self, other):
return vector2D(self.x + other.x, self.y + other.y)
now I want the + operator also to be able to add a vector2D and a point2D object and return a point2D object. And - operator between any of the classes to return vector2D anyway. I would appreciate if you could help me know if/how can I do that in Python 3.*.
python class operator-overloading
python class operator-overloading
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
edited Nov 14 '18 at 23:17
Foad
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
asked Nov 14 '18 at 23:13
FoadFoad
1,47521130
1,47521130
1
Why doesvector2Dsubclasspoint2D? A vector is not a point.
– user2357112
Nov 14 '18 at 23:15
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17
add a comment |
1
Why doesvector2Dsubclasspoint2D? A vector is not a point.
– user2357112
Nov 14 '18 at 23:15
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17
1
1
Why does
vector2D subclass point2D? A vector is not a point.– user2357112
Nov 14 '18 at 23:15
Why does
vector2D subclass point2D? A vector is not a point.– user2357112
Nov 14 '18 at 23:15
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17
add a comment |
1 Answer
1
active
oldest
votes
You clearly know how to overload operators. Use type checking to return objects of the desired type or NotImplemented in each case.
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably usingisinstance?
– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
add a comment |
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1 Answer
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1 Answer
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active
oldest
votes
You clearly know how to overload operators. Use type checking to return objects of the desired type or NotImplemented in each case.
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably usingisinstance?
– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
add a comment |
You clearly know how to overload operators. Use type checking to return objects of the desired type or NotImplemented in each case.
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably usingisinstance?
– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
add a comment |
You clearly know how to overload operators. Use type checking to return objects of the desired type or NotImplemented in each case.
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
You clearly know how to overload operators. Use type checking to return objects of the desired type or NotImplemented in each case.
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
answered Nov 14 '18 at 23:29
roeen30roeen30
46629
46629
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably usingisinstance?
– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
add a comment |
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably usingisinstance?
– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably using
isinstance?– Foad
Nov 14 '18 at 23:33
Would you be so kind to show me how it should be done? are you saying that I can put some if statements inside those methods and then return different things based on the input? probably using
isinstance?– Foad
Nov 14 '18 at 23:33
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
Exactly so. Please try that and update the question if you have more difficulties.
– roeen30
Nov 14 '18 at 23:36
add a comment |
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1
Why does
vector2Dsubclasspoint2D? A vector is not a point.– user2357112
Nov 14 '18 at 23:15
well, mathematically speaking true, but computationally: it can inherit all the methods without any issues.
– Foad
Nov 14 '18 at 23:17