class FooIndex:
    def __index__(self):
        return 5

class FooFloat:
    def __float__(self):
        return 5.5

class FooComplex:
    def __complex__(self):
        return complex(5, 6)

i1 = 1
i2 = 2
f1 = 1.5
f2 = 2.5
c1 = complex(1, 1)
c2 = complex(2, 2)
s1 = "1+2j"

# Lines that should work
c = complex(i1, i2)
c = complex(f1, i2)
c = complex(i1, f2)
c = complex(f1, f2)
c = complex(i1, c1)
c = complex(f1, c1)
c = complex(c1, c2)
c = complex(s1)

c = complex(FooIndex(), i2)
c = complex(FooFloat(), i2)
c = complex(FooComplex(), i2)
c = complex(i1, FooIndex())
c = complex(i1, FooFloat())
c = complex(FooIndex(), FooIndex())
c = complex(FooFloat(), FooFloat())

# Lines that should be an error
c = complex(s1, s1)
c = complex(i1, FooComplex())
c = complex(FooComplex(), FooComplex())
c = complex(list())
c = complex(dict())
c = complex(object())
c = complex(list(), list())