详解Python脚本如何设置试用期

from datetime import datetime
from urllib.request import urlopen
import time
import ssl
import sys

ssl._create_default_https_context = ssl._create_unverified_context


def get_network_time():
    url = "https://www.baidu.com"
    try:
        with urlopen(url) as res:
            utctime = gmtstr_to_localtime(res.getheader("Date"))
            return datetime_from_utc_to_local(utctime)
    except Exception as e:
        print("请检查网络设置")
        sys.exit()


def gmtstr_to_localtime(gmtstr) -> datetime:
    return datetime.strptime(gmtstr, "%a, %d %b %Y %H:%M:%S GMT")


def datetime_from_utc_to_local(utc_datetime):
    now_timestamp = time.time()
    offset = datetime.fromtimestamp(now_timestamp) - datetime.utcfromtimestamp(
        now_timestamp
    )
    return utc_datetime + offset


if __name__ == "__main__":
    print(get_network_time())
    # Output:
    # 2022-07-19 06:39:12

def lock():
    now = get_network_time()
    end_date = datetime(2022, 8, 26)
    if now > end_date:
        print("试用已到期")
        sys.exit()

from lock import lock

def somefunc():
    lock()
    # do your work

from core_work import main
main()

from distutils.core import setup
from Cython.Build import cythonize
files = ["lock.py", "core_work.py"]

setup(
    name="yourapp",
    ext_modules=cythonize(files),
    script_args=["build_ext", "-b", "./build", "-t", "./build/temp"],
)