这是打印出的结果<function count.<locals>.f at 0x021F3780> <function count.<locals>.f at 0x021F3618> <function count.<locals>.f at 0x021F36F0>     

#def co():
#  fs = []
#  for i in range(1,4):
#     def f(j):
#        def g():
#           return j*j
#        return g
#     r = f(i)
#     fs.append(r)
#     return fs