PYTHON写爬虫时用到的相对路径-urljoin

使用URLJOIN从相对路径获取绝对路径：

>>> from urlparse import urljoin>>> urljoin("http://www.asite.com/folder/currentpage.html", "anotherpage.html")'http://www.asite.com/folder/anotherpage.html'>>> urljoin("http://www.asite.com/folder/currentpage.html", "folder2/anotherpage.html")'http://www.asite.com/folder/folder2/anotherpage.html'>>> urljoin("http://www.asite.com/folder/currentpage.html", "/folder3/anotherpage.html")'http://www.asite.com/folder3/anotherpage.html'>>> urljoin("http://www.asite.com/folder/currentpage.html", "../finalpage.html")'http://www.asite.com/finalpage.html'