def count():

    fs = []

    for i in range(1, 4):

        def f(j):

            def g(j):

                return j*j

            return g

        r = f(i)

        fs.append(r)

    return fs

f1, f2, f3 = count()

print f1(), f2(), f3()

报错信息：Traceback (most recent call last):

  File "index.py", line 21, in 

    print f1(), f2(), f3()

TypeError: () takes exactly 1 argument (0 given)