用__init__和__call__的本质区别是什么呢？不理顺这个就很难用__call__
class Fib(object):
def __init__(self, num):
a, b, L = 0, 1, []
for n in range(num):
L.append(a)
a, b = b, a + b
self.numbers = L
def __str__(self):
return str(self.numbers)
f = Fib
print f(10)
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