Lichen

Annotated tests/methods_changing.py

714:c2106f746c88
2017-03-12 Paul Boddie Merged changes from the default branch. return-value-definition
paul@267 1
class C:
paul@267 2
    def f(self):
paul@267 3
        return 1
paul@267 4
paul@267 5
    def g(self):
paul@267 6
        return self.f()
paul@267 7
paul@267 8
class D(C):
paul@267 9
    pass
paul@267 10
paul@267 11
def f():
paul@267 12
    return 2
paul@267 13
paul@267 14
c = C()
paul@267 15
d = D()
paul@267 16
paul@267 17
# Invoke a method that calls the default version of f.
paul@267 18
paul@267 19
print c.g()                 # 1
paul@267 20
print d.g()                 # 1
paul@267 21
paul@267 22
# Replace f in C and invoke the method again. For C, f will have changed,
paul@267 23
# but for D, f will retain its original value.
paul@267 24
paul@267 25
C.f = f
paul@267 26
paul@267 27
print c.g()                 # 2
paul@267 28
print d.g()                 # 1