python之时间、时间戳、时间加减

import datetime,time
t_str = '2012-03-05 16:26:23'
d = datetime.datetime.strptime(t_str, '%Y-%m-%d %H:%M:%S')
#print("d:",d)
 
 
t_str2 =   '2021-11-19 09:08:21.194'
 
 
tupleTime = datetime.datetime.strptime(t_str2, "%Y-%m-%d %H:%M:%S.%f")
print("tupleTime:",tupleTime,type(tupleTime))
print("0308")
now = datetime.datetime.now()
print("0308:",now,type(now))
print(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time())),type(time.strftime('%Y-%m-%d %H:%M:%S',time.localtime(time.time()))))
 
delta = datetime.timedelta(minutes=-10)
n_minutes = now + delta
print("now:",now,type(now))
print("n_minutes:",n_minutes,type(n_minutes))
 
if n_minutes
    print("yes")
else:
    print("no")
 
 
import uuid
 
 
print("u4",uuid.uuid4())
 
print("12 27")
now = datetime.datetime.now()
if 0 < now.second < 50:
    #print("1217:",now,type(now))
    #print("now.seconds:",now.second)
    print("time now:", time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))
print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))
 
print("get hour:", time.localtime().tm_hour)
print("filename:",time.strftime('%Y-%m-%d', time.localtime(time.time()))+".xlsx")
 
time.strftime('%Y-%m-%d', time.localtime(time.time()))
print((datetime.datetime.now()+datetime.timedelta(days=-10)).strftime("%Y-%m-%d"))
#print(datetime.datetime.now()+datetime.timedelta(days=-1)+datetime.timedelta(hours=8)).strftime("%Y-%m-%d")
print("0308:")
def getTimeStampInRizhiyi(time_str):
    timeArray = time.strptime(time_str, "%Y-%m-%d %H:%M:%S")
    timeStamp = int(time.mktime(timeArray))
    return timeStamp*1000
 
now = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))
print("now:",now)
print("now timestamp:",getTimeStampInRizhiyi(now))
 
now_delta_5minutes =(datetime.datetime.now()+datetime.timedelta(minutes=-5)+datetime.timedelta(hours=8)).strftime("%Y-%m-%d %H:%M:%S")
print("now_delta_5minutes:",now_delta_5minutes)
print("now_delta_5minutes timestamp:",getTimeStampInRizhiyi(now_delta_5minutes))
now_delta_15minutes =(datetime.datetime.now()+datetime.timedelta(minutes=-15)+datetime.timedelta(hours=8)).strftime("%Y-%m-%d %H:%M:%S")
print("now_delta_15minutes:",now_delta_15minutes)
print("now_delta_15minutes timestamp:",getTimeStampInRizhiyi(now_delta_15minutes))
 
print("0308")
#生成一个时间列表
endtime = getTimeStampInRizhiyi(now_delta_5minutes)
begintime= getTimeStampInRizhiyi(now_delta_15minutes)
def getTimeSliceList(begintime,endtime):
    time_slice_list=[]
    print("start:",begintime,endtime)
    while begintime < endtime:
        time_slice_list.append(begintime)
        begintime+= 60000
        #单位毫秒，大小为时间间隔，先测试时间间隔1s
 
        timeArray = time.localtime(begintime/1000)
 
        otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
        print("otherStyleTime:",otherStyleTime)
    return  time_slice_list
 
 
print(getTimeSliceList(begintime,endtime))
print(len(getTimeSliceList(begintime,endtime)))