In the following trivial example, what is the “Pythonic” way to create a “bound” method using some_method and some_obj? (Let us assume that we cannot just use some_obj.test_method)
class Test:
def __init__(self, some_value):
self.some_value = some_value
def test_method(self, arg):
print(self.some_value, arg)
some_method = Test.test_method
some_obj = Test(1)
getattr(some_obj, some_method.__name__) seems to do the trick – but this solution is not very elegant. One could also use a lambda, but in that case the arguments for the method except self need to be specified.
Is there some simpler method to achieve this that I have overlooked?
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Nothing wrong with what you’ve got, but you can also do
some_method.__get__(some_obj)
from types import MethodType
bound_method = MethodType(some_method, some_obj)
bound_method('argument')
When you call bound_method, it passes some_obj as the self argument, similar to some_obj.test_method('argument').