详解python如何正确使用时间戳,日期,时间,时区

import time
 
timestamp = time.time()
print("当前时间戳：", timestamp)

import time
 
start = time.perf_counter()
time.sleep(2)
end = time.perf_counter()
print(f"操作耗时： {end - start} 秒")

timestamp = time.time()
local_time = time.localtime(timestamp)
print("本地时间：", local_time)

timestamp = time.time()
utc_time = time.gmtime(timestamp)
print("UTC时间：", utc_time)

import time
 
struct = time.strptime("2024-11-02 22:00:00", "%Y-%m-%d %H:%M:%S")
timestamp = time.mktime(struct)
print("时间戳：", timestamp)  # 时间戳: 1730556000.0

timestamp = time.time()
readable_time = time.ctime(timestamp)
print(readable_time)  # 格式如Sat Nov  2 10:32:27 2024

time_str = "2024-11-02 22:00:00"
parsed_time = time.strptime(time_str, "%Y-%m-%d %H:%M:%S")
 
print(parsed_time)

time_str = "2024-11-02 22:00:00"
parsed_time = time.strptime(time_str, "%Y-%m-%d %H:%M:%S")
 
formatted_time = time.strftime("%Y年%m月%d日%H点%M分", parsed_time)
print("格式化时间：", formatted_time)  # 格式化时间：2024年11月02日22点00分

import time
 
print("暂停前")
time.sleep(3)  # 暂停3秒
print("暂停后")

today = datetime.date.today()
print("今天的日期：", today)  # 格式如2024-11-02

now_time = datetime.datetime.now().time()
print("当前时间：", now_time)  # 格式如10:46:50.506231

now = datetime.datetime.now()
print("当前日期和时间：", now)  # 格式如2024-11-02 10:47:44.299445

utc_now = datetime.datetime.utcnow()
print("UTC时间：", utc_now)

specific_date = datetime.date(2024, 11, 2)
print("特定日期：", specific_date)

specific_time = datetime.time(22, 0, 0)
print("特定时间：", specific_time)

specific_datetime = datetime.datetime(2024, 11, 2, 22, 0, 0)
print("特定日期和时间：", specific_datetime)

now = datetime.datetime.now()
formatted = now.strftime("%Y-%m-%d %H:%M:%S")
print("格式化日期时间：", formatted)

time_str = "2024-11-2 22:00:00"
parsed_datetime = datetime.datetime.strptime(time_str, "%Y-%m-%d %H:%M:%S")
print("解析后的日期时间对象：", parsed_datetime)

from datetime import date, timedelta
 
today = date.today()
future_date = today + timedelta(days=10)
print("10天后的日期：", future_date)
 
past_date = today - timedelta(weeks=1)
print("一周前的日期：", past_date)

from datetime import datetime, timedelta
 
now = datetime.now()
 
future_time = now + timedelta(minutes=10)
print("10分钟后的日期时间：", future_time)
 
past_time = now - timedelta(hours=2)
print("2小时前的日期时间：", past_time)

from datetime import datetime
from zoneinfo import ZoneInfo
 
now_utc = datetime.now(ZoneInfo("UTC"))
print("UTC时间：", now_utc)
 
# 转换为北京时间
now_beijing = now_utc.astimezone(ZoneInfo("Asia/Shanghai"))
print("北京时间：", now_beijing)
 
# 转换为纽约时间
now_newyork = now_utc.astimezone(ZoneInfo("America/New_York"))
print("纽约时间：", now_newyork)

from datetime import datetime, timedelta
 
now_utc = datetime.utcnow()
print("UTC时间：", now_utc)
 
now_beijing = now_utc + timedelta(hours=8)
print("北京时间：", now_beijing)
 
now_newyork = now_utc - timedelta(hours=5)
print("纽约时间：", now_newyork)

import zoneinfo
 
print(zoneinfo.available_timezones())

import zoneinfo
 
for zone in zoneinfo.available_timezones():
    if "Asia" in zone:
        print(zone)

from datetime import datetime
from zoneinfo import ZoneInfo
 
tz_shanghai = ZoneInfo("Asia/Shanghai")
tz_newyork = ZoneInfo("America/New_York")
 
now_shanghai = datetime.now(tz_shanghai)
now_newyork = datetime.now(tz_newyork)
 
print("北京时间：", now_shanghai)
print("纽约时间：", now_newyork)