相关疑难解决方法(0)

我正在尝试学习如何从页面自动获取网址.在下面的代码中,我试图获取网页的标题:

import urllib.request
import re

url = "http://www.google.com"
regex = r'<title>(,+?)</title>'
pattern  = re.compile(regex)

with urllib.request.urlopen(url) as response:
   html = response.read()

title = re.findall(pattern, html)
print(title)

我得到了这个意想不到的错误:

Traceback (most recent call last):
  File "path\to\file\Crawler.py", line 11, in <module>
    title = re.findall(pattern, html)
  File "C:\Python33\lib\re.py", line 201, in findall
    return _compile(pattern, flags).findall(string)
TypeError: can't use a string pattern on a bytes-like object

我究竟做错了什么？

我想使用python在屏幕上获取活动窗口.

例如,路由器的管理界面,您输入用户名和密码作为admin

我希望使用python捕获该管理界面以自动输入用户名和密码.

为了做到这一点,我需要进口什么？

我正在使用不同的程序(ffmpeg)来获取下载的YouTube视频的长度,以便随机化视频中的特定点.但是,当我尝试执行此代码时,我收到此错误:

def grabTimeOfDownloadedYoutubeVideo(youtubeVideo):
    process = subprocess.Popen(['/usr/local/bin/ffmpeg', '-i', youtubeVideo], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    stdout, stderr = process.communicate()
    matches = str(re.search(b"Duration:\s{1}(?P<hours>\d+?):(?P<minutes>\d+?):(?P<seconds>\d+\.\d+?),", stdout, re.DOTALL).groupdict()).encode()
    print(matches)
    hours = int(matches['hours'])
    minutes = int(matches['minutes'])
    seconds = int(matches['seconds'])
    total = 0
    total += 60 * 60 * hours
    total += 60 * minutes
    total += seconds
    print(total)

匹配变量打印出来:

b"{'minutes': b'04', 'hours': b'00', 'seconds': b'24.94'}"

因此,所有输出在其开头都带有'b'.如何删除'b'并获取号码？

完整的错误消息:

Traceback (most recent call last):
  File "bot.py", line 87, in <module>
    grabTimeOfDownloadedYoutubeVideo("videos/1.mp4")
  File "bot.py", line 77, in grabTimeOfDownloadedYoutubeVideo
    hours = int(matches['hours'])
TypeError: byte …