先感谢[ValueError: too many values to unpack](http://leonzhan.iteye.com/blog/1720315)系统出现异常:打开太多值(预期2)这种错误是指一个tuple值赋给一个tuple变量时,变量个数不够.如:a,b = (1,2,3)for example: if ditc_a is dict, following code will get this errorfor key, value in ditc_a: ... Correc