時間模塊
time模塊
獲取秒級時間戳、毫秒級時間戳、微秒級時間戳
import time t = time.time() print t # 原始時間數據 1574502460.90 print int(t) # 秒級時間戳:10位 1574502460 print int(round(t * 1000)) # 毫秒級時間戳:13位 1574502460904 print int(round(t * 1000000)) # 微秒級時間戳:16位 1574502460903997
格式化日期與秒級時間戳之間的轉換
import time
# 將日期轉為秒級時間戳
dt = '2019-08-08 10:00:00'
ts = int(time.mktime(time.strptime(dt, "%Y-%m-%d %H:%M:%S")))
print ts # 結果:1565229600
# 將秒級時間戳轉為日期
ts = 1565229600
dt = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(ts))
print dt # 結果:2019-08-08 10:00:00
# 將當前秒級時間戳轉為日期,下面兩種寫法的結果是一樣的
ct = time.strftime('%Y-%m-%d %H:%M:%S')
ct = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time()))
print ct, type(ct) # 結果:2019-11-25 09:45:09 <type 'str'>
轉結構體時間struct_time
# 日期時間轉結構體
ta_dt = time.strptime("2019-11-25 10:20:50", '%Y-%m-%d %H:%M:%S')
print ta_dt # time.struct_time(tm_year=2019, tm_mon=11, tm_mday=25, tm_hour=10, tm_min=20, tm_sec=50, tm_wday=0, tm_yday=329, tm_isdst=-1)
# 時間戳轉結構體,注意時間戳要求為int,也可以不帶參數:ta_ms = time.localtime()
ta_ms = time.localtime(1574648450)
print ta_ms # time.struct_time(tm_year=2019, tm_mon=11, tm_mday=25, tm_hour=10, tm_min=20, tm_sec=50, tm_wday=0, tm_yday=329, tm_isdst=0)
print ta_ms[0], ta_ms[1], ta_ms[2], ta_ms[3], ta_ms[4], ta_ms[5]
其他用法
print time.time() # 結果:1574655005.15,現在距離計算機元年過去了多少秒。
print time.ctime() # 結果:Mon Nov 25 12:10:05 2019
print time.sleep(3) # 結果:程序運行到這兒,暫停3秒,休眠3秒。
print time.asctime((2019,5,7,20,8,8,6,3,1)) # 結果:Sun May 7 20:08:08 2019
print time.mktime((2019,5,9,20,8,8,0,0,0)) # 結果:1557403688.0
print time.gmtime(7200) # 結果:time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=2, tm_min=0, tm_sec=0, tm_wday=3, tm_yday=1, tm_isdst=0)
print time.gmtime(1557403688) # 結果:time.struct_time(tm_year=2019, tm_mon=5, tm_mday=9, tm_hour=12, tm_min=8, tm_sec=8, tm_wday=3, tm_yday=129, tm_isdst=0)
print time.localtime(1557403688.0) # 結果:time.struct_time(tm_year=2019, tm_mon=5, tm_mday=9, tm_hour=20, tm_min=8, tm_sec=8, tm_wday=3, tm_yday=129, tm_isdst=0)
print time.localtime() # 結果:time.struct_time(tm_year=2019, tm_mon=11, tm_mday=25, tm_hour=12, tm_min=10, tm_sec=8, tm_wday=0, tm_yday=329, tm_isdst=0)
datetime模塊
dateutil模塊
from dateutil.parser import parse
t1 = parse('2019-10-01 10:10:10')
t2 = parse('2019-10-01/10:10:10')
t3 = parse('2019/12/01 10:10:10')
t4 = parse('2019/12/01/10:10:10')
print t1, type(t1) # 2019-10-01 10:10:10 <type 'datetime.datetime'>
print t2, type(t2) # 2019-10-01 10:10:10 <type 'datetime.datetime'>
print t3, type(t3) # 2019-12-01 10:10:10 <type 'datetime.datetime'>
print (t3-t1).days # 61
print (t3-t1).seconds # 0
print (t3-t1).total_seconds() # 5270400.0
https://www.cnblogs.com/mashuqi/p/11576705.html
https://www.jianshu.com/p/f29dddce3a9a
隨機模塊
