Python中打印出指定格式日期时间的12种方式

from datetime import datetime
print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))

print(datetime.now().strftime('%Y/%m/%d'))

print(datetime.now().strftime('%H:%M:%S'))

import time
print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime()))

print(datetime.now().strftime('Today is %A, %B %d, %Y'))

import arrow
print(arrow.now().format('YYYY-MM-DD HH:mm:ss'))

from dateutil import parser
print(parser.parse('today').strftime('%Y-%m-%d %H:%M:%S'))

import pytz
from datetime import datetime
timezone = pytz.timezone('Asia/Shanghai')
print(datetime.now(timezone).strftime('%Y-%m-%d %H:%M:%S'))

from datetime import datetime
print(datetime.strptime('2023-04-01', '%Y-%m-%d').strftime('%d/%m/%Y'))

from datetime import datetime
print(f'{datetime.now():%Y-%m-%d %H:%M:%S}')

import calendar
print(calendar.timegm(datetime.now().timetuple()))

import pandas as pd
print(pd.Timestamp.now().strftime('%Y-%m-%d %H:%M:%S'))

from datetime import datetime
filename = f"my_log_{datetime.now().strftime('%Y%m%d_%H%M%S')}.txt"
print(filename)

from datetime import datetime, timedelta

# 获取当前日期
today = datetime.now()

# 获取上个月的第一天和最后一天
first_day_last_month = (today.replace(day=1) - timedelta(days=1)).replace(day=1)
last_day_last_month = today.replace(day=1) - timedelta(days=1)

# 格式化日期
formatted_first_day = first_day_last_month.strftime('%Y-%m-%d')
formatted_last_day = last_day_last_month.strftime('%Y-%m-%d')

print(f'Start of last month: {formatted_first_day}')
print(f'End of last month: {formatted_last_day}')

from dateutil import parser

# 解析模糊日期
date = parser.parse('yesterday')
formatted_date = date.strftime('%Y-%m-%d')

print(f'Yesterday was: {formatted_date}')

import pytz
from datetime import datetime

# 在纽约时区获取当前时间
ny_time = datetime.now(pytz.timezone('America/New_York'))

# 转换为伦敦时间
london_time = ny_time.astimezone(pytz.timezone('Europe/London'))

print(f'New York time: {ny_time.strftime("%Y-%m-%d %H:%M:%S")}')
print(f'London time: {london_time.strftime("%Y-%m-%d %H:%M:%S")}')