在python 3中从列表中删除

下面是一个简单的方法:

mlist = your-list-as-specified-above

newlist = []
for m in mlist:
    if m.startswith('http'):
        newlist.append(m)

您可以使用带有正则表达式的列表理解来筛选不包含协议的链接:

[link for link in links if re.match('https?\:\/\/', link)]

给:

['https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/about/', 'https://www.demodms.com/annuity/services/', 'https://www.demodms.com/annuity/educational-courses/', 'https://www.demodms.com/annuity/events/', 'https://www.demodms.com/annuity/articles-and-downloads/', 'https://www.demodms.com/annuity/videos/', 'https://www.demodms.com/annuity/calculators/', 'https://www.demodms.com/annuity/news/', 'https://www.demodms.com/annuity/contact/', 'https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/about/', 'https://www.demodms.com/annuity/services/', 'https://www.demodms.com/annuity/educational-courses/', 'https://www.demodms.com/annuity/events/', 'https://www.demodms.com/annuity/articles-and-downloads/', 'https://www.demodms.com/annuity/videos/', 'https://www.demodms.com/annuity/calculators/', 'https://www.demodms.com/annuity/news/', 'https://www.demodms.com/annuity/contact/', 'https://www.demodms.com/annuity/tips-for-back-to-school-season/', 'https://www.demodms.com/annuity/tips-for-back-to-school-season/', 'https://www.demodms.com/annuity/5-things-to-know-about-getting-life-insurance-for-your-child/', 'https://www.demodms.com/annuity/5-things-to-know-about-getting-life-insurance-for-your-child/', 'https://www.demodms.com/annuity/5-signs-you-need-to-up-your-life-insurance-coverage/', 'https://www.demodms.com/annuity/5-signs-you-need-to-up-your-life-insurance-coverage/', 'https://www.demodms.com/annuity/tips-for-summer-travel/', 'https://www.demodms.com/annuity/tips-for-summer-travel/', 'https://youtechassociates.com/']

你可以用 滤波器 为了得到这个结果

a = ['mailto:info@yourdomain.com', 'https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/about/', 'https://www.demodms.com/annuity/services/', 'https://www.demodms.com/annuity/educational-courses/', 'https://www.demodms.com/annuity/events/', 'https://www.demodms.com/annuity/articles-and-downloads/', 'https://www.demodms.com/annuity/videos/', 'https://www.demodms.com/annuity/calculators/', 'https://www.demodms.com/annuity/news/', 'https://www.demodms.com/annuity/contact/', 'https://www.demodms.com/annuity/', 'https://www.demodms.com/annuity/about/', 'https://www.demodms.com/annuity/services/', 'https://www.demodms.com/annuity/educational-courses/', 'https://www.demodms.com/annuity/events/', 'https://www.demodms.com/annuity/articles-and-downloads/', 'https://www.demodms.com/annuity/videos/', 'https://www.demodms.com/annuity/calculators/', 'https://www.demodms.com/annuity/news/', 'https://www.demodms.com/annuity/contact/', '/events/', 'https://www.demodms.com/annuity/tips-for-back-to-school-season/', 'https://www.demodms.com/annuity/tips-for-back-to-school-season/', 'https://www.demodms.com/annuity/5-things-to-know-about-getting-life-insurance-for-your-child/', 'https://www.demodms.com/annuity/5-things-to-know-about-getting-life-insurance-for-your-child/', 'https://www.demodms.com/annuity/5-signs-you-need-to-up-your-life-insurance-coverage/', 'https://www.demodms.com/annuity/5-signs-you-need-to-up-your-life-insurance-coverage/', 'https://www.demodms.com/annuity/tips-for-summer-travel/', 'https://www.demodms.com/annuity/tips-for-summer-travel/', 'mailto:Info@yourdomain.com', '/about/', '/events/', '/news/', '/contact/', 'https://youtechassociates.com/', '/privacy-policy', '/terms-of-use', '/disclosure/']

b = filter(lambda x: 'http' not in  x, a)
print(list(b))

输出:

['mailto:info@yourdomain.com'、'/events/'、'mailto:info@yourdomain.com'、'/about/'、'/events/'、'/news/'、'/contact/'、'/privacy policy'、'/terms of use'、'/disclosure/']

我会用列表理解和 startswith() :

full_links = [link for link in links if link.startswith('http://') or link.startswith('https://')]

当你有这么简单的任务时,我认为这比regex更清楚。另外,我想你应该要求 http:// 和 https:// http 如果你遇到像 http_stuff/foo.html .