python 日期 random fromiter flags.writeable np.ndenumerate, np.ndindex put函数,take函数 flat flaten
python日期randomfromiterflags.writeablenp.ndenumerate,np.ndindexput函数,take函数flatflatennditer获得昨天,今天,明天的日期>>>yesterday=np.datetime64('today','D')-np.timedelta64(1,'D')>>>print("Yesterdayis"+str(yesterday