Do

from time import time

t = time()

t-浮点数，适用于时间间隔测量。

Unix和Windows平台有一些不同。

import datetime
date_time = str(datetime.datetime.now()).split()
date,time = date_time

date将打印日期，time将打印时间。

对UTC日期时间、本地日期时间使用此方法，并转换上午和下午

import pytz
from datetime import datetime

#UTC Time
print("UTC Date and time")
epoch: datetime =datetime.now().replace(tzinfo=pytz.utc)
print(epoch)

#local date and time
print("Local Date and time")
today = datetime.now()
local_time = today.strftime("%Y-%M-%d:%H:%M:%S")
print(local_time)

#convert time to AM PM format
print("Date and time AM and PM")
now = today.strftime("%Y-%M-%d:%I:%M %p")
print(now)

import datetime
import pytz # for timezone()
import time

current_time1 = datetime.datetime.now()
current_time2 = datetime.datetime.now(pytz.timezone('Asia/Taipei'))
current_time3 = datetime.datetime.utcnow()
current_time4 = datetime.datetime.now().isoformat()
current_time5 = time.gmtime(time.time())

print("datetime.datetime.now():", current_time1)
print("datetime.datetime.now(pytz.timezone('Asia/Taipei')):", current_time2)
print("datetime.utcnow():", current_time3)
print("datetime.datetime.now().isoformat():", current_time4)
print('time.gmtime(time.time()): ', current_time5)

要在11:34:23.751毫秒内精确获得3个小数点，请运行以下命令：

def get_time_str(decimal_points=3):
        return time.strftime("%H:%M:%S", time.localtime()) + '.%d' % (time.time() % 1 * 10**decimal_points)

更多上下文：

我想用毫秒来计算时间。获取它们的简单方法：

import time, datetime

print(datetime.datetime.now().time())                         # 11:20:08.272239

# Or in a more complicated way
print(datetime.datetime.now().time().isoformat())             # 11:20:08.272239
print(datetime.datetime.now().time().strftime('%H:%M:%S.%f')) # 11:20:08.272239

# But do not use this:
print(time.strftime("%H:%M:%S.%f", time.localtime()), str)    # 11:20:08.%f

但我只需要几毫秒，对吧？获取它们的最短方法：

import time

time.strftime("%H:%M:%S", time.localtime()) + '.%d' % (time.time() % 1 * 1000)
# 11:34:23.751

在最后一次乘法中添加或删除零以调整小数点的数量，或仅执行以下操作：

def get_time_str(decimal_points=3):
    return time.strftime("%H:%M:%S", time.localtime()) + '.%d' % (time.time() % 1 * 10**decimal_points)

您可以尝试以下操作

import datetime

now = datetime.datetime.now()
print(now)

or

import datetime

now = datetime.datetime.now()
print(now.strftime("%Y-%b-%d, %A %I:%M:%S"))