1.报错:'NoneType' object has no attribute 'get_text'

是取不存在值所致,在get_text之前判断一下,即:

if title is None: return

2.防止程序因错误终止,多用try即:

try:

...

except Exception as e:

print(e)

3.请求太频繁,写在requests底下

s = requests.session()

s.keep_alive = False

4.多线程并发抓取

from threading import Thread

from Queue import Queue

from time import sleep

# q是任务队列

#NUM是并发线程总数

#JOBS是有多少任务

q = Queue()

NUM = 2

JOBS = 10

#具体的处理函数,负责处理单个任务

def do_somthing_using(arguments):

   print arguments

#这个是工作进程,负责不断从队列取数据并处理

def working():

   while True:

       arguments = q.get()

       do_somthing_using(arguments)

       sleep(1)

       q.task_done()

#fork NUM个线程等待队列

for i in range(NUM):

   t = Thread(target=working)

   t.setDaemon(True)

   t.start()

#把JOBS排入队列

for i in range(JOBS):

   q.put(i)

#等待所有JOBS完成

q.join()