总结：

time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")

几个概念

时间戳：整型或floattime对象，datetime对象字符串 := '2015-06-06 10:10:10'

时间戳<-->struct_time

time_struct = time.localtime(timestamp)timestamp = time.mktime(time_struct)

struct_time<-->字符串

time.strftime("%Y-%m-%d %H:%M:%S", st)time.strptime(st, "%Y-%m-%d %H:%M:%S")

时间戳<-->datetime

datetime.datetime.fromtimestamp(ts)dt.timestamp()

datetime<-->字符串

dt.strftime("%Y-%m-%d %H:%M:%S.%f")datetime.strptime(dt, "%Y-%m-%d %H:%M:%S.%f")ps：datetime转time对象：datetimeObj.timetuple()