time时间

1.时间戳 

import time

ticks = time.time()
ctime = time.ctime()
gmtime = time.gmtime()
print(ticks)  #1591109841.5101242

print(ctime) #Tue Jun  2 22:57:21 2020

print(gmtime) #time.struct_time(tm_year=2020, tm_mon=6, tm_mday=2, tm_hour=14, tm_min=57, tm_sec=21, tm_wday=1, tm_yday=154, tm_isdst=0)
2020-06-02 22:57:21

2.格式化处理时间

#strftime
str = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())
print(str)

#strptime
timeStr = '2018-01-26 12:55:20'
timeStr2 = time.strptime(timeStr,"%Y-%m-%d %H:%M:%S")
print(timeStr2)

3.计算程序运行时间

#起止时间，单位秒
start_time = time.perf_counter()
sleep(3.3)
end_time = time.perf_counter()