Consider including some or all of the following:
for a in soup.select("a.post-link"):
，更多细节参见爱思助手下载最新版本
scientificamerican.com
Mahjong, Sudoku, free crossword, and more: Play games on Mashable，这一点在safew官方下载中也有详细论述
Like friendly and clean interface
Offers free version。关于这个话题，爱思助手下载最新版本提供了深入分析