一、使用 time 模块展示当前日期和时间
import timefrom time import gmtime, strftime t = time.localtime() print (time.asctime(t)) # Sun May 7 09:30:37 2017print(strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())) # Sun, 07 May 2017 04:00:37 +0000print(strftime("%A", gmtime())) # Sundayprint(strftime("%D", gmtime())) # 05/07/17print(strftime("%B", gmtime())) # Mayprint(strftime("%y", gmtime())) # 17 # Convert seconds into GMT dateprint(strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime(1234567890))) # Fri, 13 Feb 2009 23:31:30 +0000二、将天、小时、分钟转换为秒
SECONDS_PER_MINUTE = 60SECONDS_PER_HOUR = 3600SECONDS_PER_DAY = 86400 # 输入天、小时、分钟、秒的数量days = int(input("Enter number of Days: "))hours = int(input("Enter number of Hours: "))minutes = int(input("Enter number of Minutes: "))seconds = int(input("Enter number of Seconds: ")) # 计算total_seconds = days * SECONDS_PER_DAYtotal_seconds = total_seconds + ( hours * SECONDS_PER_HOUR)total_seconds = total_seconds + ( minutes * SECONDS_PER_MINUTE)total_seconds = total_seconds + seconds # 结果print("Total number of seconds: ","%d"%(total_seconds))'''Enter number of Days: 5Enter number of Hours: 36Enter number of Minutes: 24Enter number of Seconds: 15Total number of seconds: 563055'''三、使用 Pandas 获取当前日期和时间
import pandas as pdprint(pd.datetime.now()) # 2018-01-19 16:08:28.393553print(pd.datetime.now().date()) # 2018-01-19print(pd.datetime.now().year) # 2018print(pd.datetime.now().month) # 1print(pd.datetime.now().day) # 19print(pd.datetime.now().hour) # 16print(pd.datetime.now().minute) # 8print(pd.datetime.now().second) # 28print(pd.datetime.now().microsecond) # 394553四、将字符串转换为日期时间对象
from datetime import datetimefrom dateutil import parserd1 = "Jan 7 2015 1:15PM"d2 = "2015 Jan 7 1:33PM"# If you know date formatdate1 = datetime.strptime(d1, '%b %d %Y %I:%M%p')print(type(date1)) # class 'datetime.datetime'print(date1) # 2015-01-07 13:15:00# If you don't know date formatdate2 = parser.parse(d2)print(type(date2)) # class 'datetime.datetime'print(date2) # 2015-01-07 13:33:00五、以毫秒为单位获取当前时间
import time milliseconds = int(round(time.time() * 1000))print(milliseconds) # 1516364270650六、以 MST、EST、UTC、GMT 和 HST 获取当前日期时间
from datetime import datetimefrom pytz import timezone mst = timezone('MST')print("Time in MST:", datetime.now(mst)) # Time in MST: 2017-01-19 06:06:14.495605-07:00est = timezone('EST')print("Time in EST:", datetime.now(est)) # Time in EST: 2017-01-19 08:06:14.496606-05:00utc = timezone('UTC')print("Time in UTC:", datetime.now(utc)) # Time in UTC: 2017-01-19 13:06:14.496606+00:00gmt = timezone('GMT')print("Time in GMT:", datetime.now(gmt)) # Time in GMT: 2017-01-19 13:06:14.496606+00:00hst = timezone('HST')print("Time in HST:", datetime.now(hst)) # Time in HST: 2017-01-19 03:06:14.497606-10:00七、从给定的日期当中获取星期几
import datetime dayofweek = datetime.date(2010, 6, 16).strftime("%A")print(dayofweek) # Wednesday# weekday()方法： 0代表周一，6代表周日print("weekday():", datetime.date(2010, 6, 16).weekday()) # weekday(): 2 # isoweekday() 方法： 1代表周一，7代表周日print("isoweekday()", datetime.date(2010, 6, 16).isoweekday()) # isoweekday() 3 dayofweek = datetime.datetime.today().strftime("%A")print(dayofweek) # Fridayprint("weekday():", datetime.datetime.today().weekday()) # weekday(): 4print("isoweekday()", datetime.datetime.today().isoweekday()) # isoweekday(): 5八、计算两个日期时间对象之间的时差
import datetimefrom datetime import timedelta datetimeFormat = '%Y-%m-%d %H:%M:%S.%f'date1 = '2016-04-16 10:01:28.585'date2 = '2016-03-10 09:56:28.067'diff = datetime.datetime.strptime(date1, datetimeFormat)\ - datetime.datetime.strptime(date2, datetimeFormat) print("Difference:", diff) # Difference: 37 days, 0:05:00.518000print("Days:", diff.days) # Days: 37print("Microseconds:", diff.microseconds) # Microseconds: 518000print("Seconds:", diff.seconds) # Seconds: 300九、将 5 分钟添加到 Unix 时间戳
import datetimeimport calendar future = datetime.datetime.utcnow() + datetime.timedelta(minutes=5)print(calendar.timegm(future.timetuple())) # 1621069619十、遍历一系列日期
import datetimestart = datetime.datetime.strptime("21-06-2020", "%d-%m-%Y")end = datetime.datetime.strptime("05-07-2020", "%d-%m-%Y")date_generated = [start + datetime.timedelta(days=x) for x in range(0, (end - start).days)]for date in date_generated: print(date.strftime("%d-%m-%Y"))十一、巴黎时间更改为纽约时间
import pendulum in_paris = pendulum.datetime(2016, 8, 7, 22, 24, 30, tz='Europe/Paris')print(in_paris) # 2016-08-07T22:24:30+02:00 in_us = in_paris.in_timezone('America/New_York')print(in_us) # 2016-08-07T16:24:30-04:00十二、使用 Python 获得最后7个工作日
from datetime import datefrom datetime import timedelta today = date.today() for i in range(7): d = today - timedelta(days=i) if d.weekday() < 5: print(d)十三、从今天的日期和一个人的生日推算年龄
from datetime import date def calculate_age(born): today = date.today() try: birthday = born.replace(year=today.year) except ValueError: birthday = born.replace(year=today.year, month=born.month + 1, day=1) if birthday > today: return today.year - born.year - 1 else: return today.year - born.year print(calculate_age(date(2001, 3, 1)))十四、获得本月的第一个星期二
import calendarfrom datetime import datetime c = calendar.Calendar(firstweekday=calendar.SUNDAY)monthcal = c.monthdatescalendar(datetime.today().year, datetime.today().month)#Python小白学习交流群：153708845 try: tues = [day for week in monthcal for day in week if day.weekday() == calendar.TUESDAY and day.month == datetime.today().month][0] print(tues)except IndexError: print('No date found')十五、将整数转换为日期对象
from datetime import datetimei = 1545730073timestamp = datetime.fromtimestamp(i)print(timestamp) # 2018-12-25 14:57:53print(type(timestamp))十六、当前日期减去 N 天的天数
from datetime import datetime, timedeltad = datetime.today() - timedelta(days=5)print(d)十七、比较两个日期
import datetimea = datetime.datetime(2020, 12, 31, 23, 59, 59)b = datetime.datetime(2020, 11, 30, 23, 59, 59)print(a b)十八、从 datetime 对象中提取年份
import datetime year = datetime.date.today().yearprint(year)十九、根据日期找到星期几
import pendulum dt = pendulum.parse('2021-05-18')print(dt.day_of_week) # 2 dt = pendulum.parse('2021-05-01')print(dt.day_of_week) # 6 dt = pendulum.parse('2021-05-21')print(dt.day_of_week) # 5二十、从当前日期获取 7 天前的日期
from datetime import datetime, timedelta now = datetime.now() for x in range(7): d = now - timedelta(days=x) print(d.strftime("%Y-%m-%d"))二十一、将两个日期时间对象之间的差值转换为秒
import datetime time1 = datetime.datetime.strptime('19 01 2021', '%d %m %Y')time2 = datetime.datetime.strptime('25 01 2021', '%d %m %Y') difference = time2 - time1print(difference) # 6 days, 0:00:00 seconds = difference.total_seconds()print(seconds) # 518400.0二十二、获得任何一个月的第N个星期五
import calendar# 取2021年5月的第三个星期五c = calendar.Calendar(firstweekday=calendar.SUNDAY)year = 2021month = 5n = 2 # 取第三个monthcal = c.monthdatescalendar(year, month) try: third_friday = [ day for week in monthcal for day in week if day.weekday() == calendar.FRIDAY and day.month == month ][n] print(third_friday) # 2021-05-21except IndexError: print('No date found')二十三、根据周数获取日期
import datetimefrom dateutil.relativedelta import relativedelta week = 25year = 2021date = datetime.date(year, 1, 1) + relativedelta(weeks=+week)print(date) # 2021-06-25二十四、获取特定日期的工作日
import datetime print(datetime.date(2020, 5, 15).isocalendar()[2]) # 5二十五、创建一个 15 分钟前的 DateTime
import datetime#Python小白学习交流群：153708845 dt = datetime.datetime.now() - datetime.timedelta(minutes=15)print(dt) # 2021-05-15 22:25:55.897365二十六、从特定日期获取周的开始和结束日期
import pendulum dt = pendulum.datetime(2012, 9, 5) start = dt.start_of('week')print(start.to_datetime_string()) # 2012-09-03 00:00:00 end = dt.end_of('week')print(end.to_datetime_string()) # 2012-09-09 23:59:59二十七、两个日期之间的差异（以秒为单位）
from datetime import datetime#Python小白学习交流群：153708845 fmt = '%Y-%m-%d %H:%M:%S'd1 = datetime.strptime('2020-01-01 17:31:22', fmt)d2 = datetime.strptime('2020-01-03 17:31:22', fmt) days_diff = d2 - d1print(days_diff.days * 24 * 60 * 60) # 172800二十八、以这种格式获取昨天的日期MMDDYY
from datetime import date, timedelta yesterday = date.today() - timedelta(days=1)print(yesterday.strftime('%m%d%y')) # 051421二十九、根据今天的日期获取上周三的日期
from datetime import datefrom datetime import timedeltatoday = date.today()offset = (today.weekday() - 2) % 7wednesday = today - timedelta(days=offset)print(wednesday) # 2021-05-12三十、所有可用时区的列表打印
import pytzfor i in pytz.all_timezones: print(i)