python 小白，今天写脚本遇到获取当前时间，昨天0点到23:59:59的问题，于是上网搜了一番，结果发现很简单的问题大家写的都是千奇百怪，有的甚至晦涩难懂，所以自己便花了一点时间专门整理后记录如下，希望给大家参考
下面分别是利用datetime和time 模块打印时间并进行格式化
## datetime
# 表示当天（今天）日期
import datetime
today = datetime.date.today()
yesterday = today - datetime.timedelta(days=1)
print(today)
print(yesterday)# 表示当前时间
now = datetime.datetime.now()
print(now)
now = now.strftime("%Y-%m-%d %H:%M:%S")
print(now)# 昨天此刻
now = datetime.datetime.now()
yes_time = now + datetime.timedelta(days=-1)
print(yes_time)
yes_time = yes_time.strftime("%Y-%m-%d %H:%M:%S")
print(yes_time)# 获取今天零点(当天0点时间)
now = datetime.datetime.now()
#方式1：
today_zero = now.strftime('%Y-%m-%d 00:00:00')
print(today_zero)
#方式2：
today_zero = now - datetime.timedelta(hours=now.hour, minutes=now.minute, seconds=now.second,microseconds=now.microsecond)
print(today_zero)# 获取当天23:59:59
# 方式1：
today_last = now.strftime('%Y-%m-%d 23:59:59')
print(today_last)
# 方式2：
today_last = today_zero + datetime.timedelta(hours=23, minutes=59, seconds=59)
print(today_last)
??# 获取昨天0点
# 方式1：
yes_time = now + datetime.timedelta(days=-1)
yesterday_zero = yes_time.strftime('%Y-%m-%d 00:00:00')
print(yesterday_zero)
# 方式2:
yesterday_zero = now - datetime.timedelta(days=1, hours=now.hour, minutes=now.minute, seconds=now.second, microseconds=now.microsecond)
print(yesterday_zero)
# 获取昨天23:59
# 方式1：
yesterday_end = yes_time.strftime('%Y-%m-%d 23:59:59')
print(yesterday_end)
# 方式2：
yesterday_end = yesterday_zero + datetime.timedelta(hours=23, minutes=59, seconds=59)
print(yesterday_end)## time
import time
# 打印当前时间戳
time_stamp=time.time()
print(time_stamp)
# 打印当前时间的时间元组（本地时间）
now_tuple = time.localtime(time.time())
print(now_tuple)
# 打印当前时间的格式化时间
now_form = time.strftime('%Y-%m-%d %H:%M:%S', now_tuple)
print(now_form)
# 打印当天0点的格式化时间
zero_form = time.strftime('%Y-%m-%d 00:00:00', now_tuple)
print(zero_form)
# 将当天0点的格式化时间转化为时间元组
zero_tuple = time.strptime(zero_form, '%Y-%m-%d %H:%M:%S')
print(zero_tuple)
# 将当天0点的时间元组转化为时间戳
time_now = time.mktime(zero_tuple)
print(time_now)