时间

time：求时间戳（原始时间戳、10位时间戳、13位时间戳）

import time

timestamp = time.time()
print(timestamp, type(timestamp))
# 1615699550.5230458 <class 'float'>

timestamp_10 = int(timestamp)
print(timestamp_10, type(timestamp_10))
# 1615699550 <class 'int'>

timestamp_13 = int(timestamp*1000)
print(timestamp_13, type(timestamp_13))
# 1615699550523 <class 'int'>

time时间元组

time_tuple = time.localtime(time.time())
print(time_tuple, type(time_tuple))
# 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'>

year = time_tuple.tm_year
print(year, time_tuple[2])
# 2021 14

time格式化时间，将时间格式化为特定格式的字符串

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

str = input("请输入时间，格式为YYYY-MM-DD，例如：2021-03-01")
print(time.strptime(str, '%Y-%m-%d'))
# 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)
print(type(time.strptime(str, '%Y-%m-%d')))
# <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

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

datetime时间计算

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