时间

time：求时间戳（原始时间戳、10位时间戳、13位时间戳）

 1 import time
 2 
 3 timestamp = time.time()
 4 print(timestamp, type(timestamp))
 5 # 1615699550.5230458 <class 'float'>
 6 
 7 timestamp_10 = int(timestamp)
 8 print(timestamp_10, type(timestamp_10))
 9 # 1615699550 <class 'int'>
10 
11 timestamp_13 = int(timestamp*1000)
12 print(timestamp_13, type(timestamp_13))
13 # 1615699550523 <class 'int'>

time时间元组

1 time_tuple = time.localtime(time.time())
2 print(time_tuple, type(time_tuple))
3 # time.struct_time(tm_year=2021, tm_mon=3, tm_mday=14, tm_hour=13, tm_min=2, tm_sec=31, tm_wday=6, tm_yday=73, tm_isdst=0) <class 'time.struct_time'>
4 
5 year = time_tuple.tm_year
6 print(year, time_tuple[2])
7 # 2021 14

time格式化时间，将时间格式化为特定格式的字符串

1 print(time.asctime(time.localtime(time.time())))
2 # Sat Mar  6 14:49:37 2021
3 print(time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()))
4 # 2021-03-06 14:49:37

time格式化字符串，将字符串格式化为时间元组

1 str = input("请输入时间，格式为YYYY-MM-DD，例如：2021-03-01")
2 print(time.strptime(str, '%Y-%m-%d'))
3 # time.struct_time(tm_year=2021, tm_mon=3, tm_mday=1, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=0, tm_yday=60, tm_isdst=-1)
4 print(type(time.strptime(str, '%Y-%m-%d')))
5 # <class 'time.struct_time'>

datetime格式化字符串，将字符串格式化为特定格式的时间

1 str = input("请输入时间，格式为YYYY-MM-DD，例如：2021-03-01")
2 start_time = datetime.datetime.strptime(str, '%Y-%m-%d')
3 print(start_time, type(datetime.datetime.strptime(str, '%Y-%m-%d')))
4 # 2021-03-01 00:00:00 <class 'datetime.datetime'>

datetime时间计算

1 delta = datetime.timedelta(days=10) + start_time
2 print(delta)
3 # 2021-03-11 00:00:00

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