method.retry_with unbids it from its class instance

[jakub-krysl-ipf]

Hi,

If you have method wrapped in @retry() and want to change the params of the retry elsewhere using .retry_with(), you need to provide the class instance again. Here is a simple reproducer:

import tenacity
from datetime import datetime

class TestClass:
    @tenacity.retry(wait=tenacity.wait_fixed(5), stop=tenacity.stop_after_delay(10))
    def test(self, a):
        print(datetime.now(), a)
        raise Exception()

t = TestClass()

print(t.test.retry_with(wait=tenacity.wait_fixed(2), stop=tenacity.stop_after_delay(10)))
print(t.test)

# Usage of original retry is simple, does not need to provide "t" instance at all
t.test("OK")
# This should not need class instance "t" again
t.test.retry_with(wait=tenacity.wait_fixed(1), stop=tenacity.stop_after_delay(3))(t, a="OK")

The prints should be the same, but they are not:

<function TestClass.test at 0x7fa403015760>
<bound method TestClass.test of <__main__.TestClass object at 0x7fa4025c0990>>