解决python多线程报错:AttributeError: Can't pickle local object问题
报错信息:
Traceback (most recent call last):
File “D:/flaskProject/test.py”, line 35, in test
pool.apply(self.out, args=(i,))
File “Python37-32\lib\multiprocessing\pool.py", line 261, in apply
return self.apply_async(func, args, kwds).get()
File "\lib\multiprocessing\pool.py”, line 657, in get
raise self._value
File “\Python37-32\lib\multiprocessing\pool.py", line 431, in _handle_tasks
put(task)
File "\Python37-32\lib\multiprocessing\connection.py”, line 206, in send
self._send_bytes(_ForkingPickler.dumps(obj))
File “*\Python37-32\lib\multiprocessing\reduction.py”, line 51, in dumps
cls(buf, protocol).dump(obj)
TypeError: can't pickle _thread._local objects
原类的构造函数:
class threadtest: def __init__(self, ipList, user, password): self.ipList = ipList self.httpAuth = HTTPDigestAuth(user, password) return def out(self, i): url = "http://" + i + "/name" response = requests.get(url, self.httpAuth) print(response.text) return def test(self): pool = Pool(processes=2) for i in self.ipList: pool.apply(self.out, args=(i,)) pool.close() pool.join() return
if name == ‘main': ipList = [‘192.168.2.1', ‘192.168.2.2', ‘192.168.2.3', ‘192.168.2.4', ‘192.168.2.5', ] a = threadtest(ipList, ‘admin', ‘admin') a.test()
原因:
在class中对属性进行初始化使用了其它类返回的句柄进行初始化导致,HTTPDigestAuth的返回值不能进行序列化,也就是不能作为cls(buf, protocol).dump(obj)的参数进行序列化。
将self.httpAuth = HTTPDigestAuth(httpUser, httpPassword)修改为:
self.httpUser
self.httpPassword
并将函数HTTPDigestAuth放到类的方法中
修改后:
class threadtest: def __init__(self, ipList, user, password): self.ipList = ipList self.user = user self.password = password return def out(self, i): url = "http://" + i + "/name" response = requests.get(url, HTTPDigestAuth(self.user, self.password)) print(response.text) return def test(self): pool = Pool(processes=2) for i in self.ipList: pool.apply(self.out, args=(i,)) pool.close() pool.join() return
if name == ‘main': ipList = [‘192.168.2.1', ‘192.168.2.2', ‘192.168.2.3', ‘192.168.2.4', ‘192.168.2.5', ] a = threadtest(ipList, ‘admin', ‘admin') a.test()
以上这篇解决python多线程报错:AttributeError: Can't pickle local object问题就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。
相关文章
使用coverage统计python web项目代码覆盖率的方法详解
这篇文章主要介绍了使用coverage统计python web项目代码覆盖率的方法,详细分析了coverage的安装以及coverage命令统计py文件相关操作技巧,需要的朋友可以参考下2019-08-08解决python3.6 右键没有 Edit with IDLE的问题
这篇文章主要介绍了解决python3.6 右键没有 Edit with IDLE的问题,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧2021-03-03Python3使用腾讯云文字识别(腾讯OCR)提取图片中的文字内容实例详解
这篇文章主要介绍了Python3使用腾讯云文字识别(腾讯OCR)提取图片中的文字内容方法详解,需要的朋友可以参考下2020-02-02
最新评论