Python3 时间戳格式化和减法运算

import datetime
import  time

# 获取当前时间(2023-02-16 16:41:36)
now_date = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
# 将当前时间转换为秒级时间戳(1676536896.0)
now_date_seconds = time.mktime(time.strptime(now_date, '%Y-%m-%d %H:%M:%S'))
# 将当前时间转换为毫秒级(1673945635000)
now_date_millisecond = int(str(now_date_seconds*1000).split(".")[0])

# 30天之前(2023-01-17 16:49:52)
Thirty_days_ago_days = (datetime.datetime.now()-datetime.timedelta(days=30)).strftime('%Y-%m-%d %H:%M:%S')
# 30天之前转换为秒级时间戳(1673945523.0)
Thirty_days_ago_days_seconds = time.mktime(time.strptime(Thirty_days_ago_days, '%Y-%m-%d %H:%M:%S'))
# 30天之前转换为毫秒级(1673945635000)
Thirty_days_ago_days_millisecond = int(str(Thirty_days_ago_days_seconds*1000).split(".")[0])

print(now_date)
print(now_date_seconds)
print(now_date_millisecond)
print(Thirty_days_ago_days)
print(Thirty_days_ago_days_seconds)
print(Thirty_days_ago_days_millisecond)

# 输出效果
2023-02-16 17:06:33
1676538393.0
1676538393000
2023-01-17 17:06:33
1673946393.0
1673946393000