Python TypeError: coercing to Unicode: need string or buffer, float found
调试Python程序：
unique_key = name + time.mktime(create_time.timetuple())提示错误：
TypeError: coercing to Unicode: need string or buffer, float found
错误原因：使用“+”拼接会抛出异常，改用%操作符输出
unique_key = u'%s%s' % (name, time.mktime(create_time.timetuple()))
转载自：https://blog.csdn.net/Sherry_Rui/article/details/62219452
