timestamp = '發佈人員:李麗麗 發佈時間: 2008-09-15 :00:00:00'
timestamp = response.doc('.exam-view-title').remove('a').text()
timestamp = timestamp[timestamp.index('發佈時間:') + len('發佈時間:'.decode("utf-8")):]
print timestamp
結果:
2008-09-15 :00:00:00