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python - 我怎样才能摆脱循环？

问题描述

所以我一直在尝试使用监视器 - 对于那些不知道什么是监控的人 - 基本上这意味着你正在检查某些东西等元素，网址或其他任何东西，然后再次检查它是否已经改变了。

这就是我所做的，并且...

url = 'mrcnoir'

while True:
        try:
            password_page = requests.get('https://{}.com'.format(url), timeout=5)
            password_page.raise_for_status()

        except requests.exceptions.RequestException as err:
            print('Error checking password page! - https://{}.com'.format(url) + ' - ' + str(err))
            continue



        else:
            # *************---If password up---**************

            if ('password' in password_page.url):
                        # Password page is up
                        print('Password page is up! - ' + 'https://{}.com'.format(url))
                        if not ('password' in password_page.url):

                            # No password page -> password page


                            # *************---Send---**************

                            print("SENDING...1")

                            time.sleep(random.randint(6, 12))


            # *************---If password down---**************

            else:
                # Password page is down
                print('Password page is down! - ' + 'https://{}.com'.format(url))
                if ('password' in password_page.url):

                    # Password page -> no password page


                    # *************---Send---**************

                    print("SENDING...2") #<---- If it comes in here - it will be stuck forever and just keep posting this print...
                    time.sleep(random.randint(6, 12))

        # *************---Retry between 6-12 random.---**************
        finally:
            time.sleep(random.randint(6, 12))

我遇到的问题是在底部打印“SENDING...2”-发生的事情是它一直在继续打印 SENDING...2，这意味着它被困在循环中-

基本上我想要做的是，每当涉及到第二个 Else 部分时，它应该打印一次，然后继续“监控”并检查直到有新的变化。这意味着它将需要等到它出现在 URL 中/密码。

在那种情况下，我怎么能做到这一点？

标签： pythonloops

解决方案

url = 'mrcnoir'
last_status = False
while True:
        try:
            password_page = requests.get('https://{}.com'.format(url), timeout=5)
            password_page.raise_for_status()

        except requests.exceptions.RequestException as err:
            print('Error checking password page! - https://{}.com'.format(url) + ' - ' + str(err))
            continue

        else:
            # *************---If password up---**************

            if 'password' in password_page.url and last_status == False:
                # Password page is up
                last_status = True
                print('Password page is up! - ' + 'https://{}.com'.format(url))

                time.sleep(random.randint(6, 12))


            # *************---If password down---**************

            elif not 'password' in password_page.url and last_status == True:
                # Password page is down
                last_status = False
                print('Password page is down! - ' + 'https://{}.com'.format(url))
                time.sleep(random.randint(6, 12))

        # *************---Retry between 6-12 random.---**************
        finally:
            time.sleep(random.randint(6, 12))

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