如何访问类实例的属性

问题描述：

我试图访问在另一个类中定义的类实例的属性，但我不断收到错误，指出没有属性“get”。如何访问类实例的属性

from selenium import webdriver 

class Driver: 
    proxy = [1, 2, 4] 

    def get_driver(self): 
     driver = webdriver.Firefox() 
     if self.proxy[0] == 1: 
      return self 

driver = Driver() 
driver.get_driver() 
driver.get("https://www.youtube.com/watch?v=5xxQs34UMx4&index=101&list=PLihUZHHwjm2GtO_ikMyDg7ot1ENmmYodL") 
print driver.proxy

这应该如何工作？你的'Driver'类没有'get'方法。 – L3viathan

我不明白为什么'Driver'的实例应该有'.get'属性。它不会继承任何其他类，我可以看到的唯一定义的属性是'get_driver'和'proxy'。 –

你可能想'__getattribute__'（或者简单的点符号） - 但是因为它的问题不清楚，你的url将是一个属性的非法名称。 – timgeb

答

你Driver类或许应该被称为DriverFactory或类似的东西。然后，你的代码看起来更具可读性：

class DriverFactory(object): 
    proxy = [1, 2, 4] 

    def get_driver(self): 
     driver = webdriver.Firefox() 
     if self.proxy[0] == 1: 
      return driver 
     return None 

driver_factory = DriverFactory() 
driver = driver_factory.get_driver() 
driver.get("https://www.youtube.com/.....") 
print driver_factory.proxy

但它仍然没有道理什么self.proxy部分是为了干什么，为什么回归自我的东西在那里你原来的代码？

我只是用它作为例子，我试图返回self.driver并返回驱动程序，它说没有属性'驱动程序'我只是想它返回一个对象，我可以访问驱动程序和列表或元组，无论我放入类变量中。 –

答

我能想到的访问使用ipython的自动完成实例的属性

dir(obj)
obj.__dict__
几种方法 - 交互shell中，键入obj标签

答

您正在对Driver实例应用.get。尝试做instead-

my_driver = driver.get_driver() 
    my_driver.get("https://www.youtube.com/watchv=5xxQs34UMx4&index=101&list=PLihUZHHjm2GtO_ikMyDg7ot1ENmmYodL") 
    print driver.proxy`

答

我会尽量专注于你可以给你的demand.I想你想使用python硒驱动程序来自动选择代理适应basics-，你可以尝试如下─如

import random 
from selenium import webdriver 
from selenium.webdriver.common.proxy import * 

proxies = ["76.9.5.82:65335","45.55.179.51:80","192.99.38.42:35997","40.76.212.171:80","128.136.162.223:3128","104.238.138.253:80","163.153.8.130:1080","208.67.1.154:80","107.151.152.218:80","23.253.208.241:80","104.42.229.65:3128","23.239.134.14:80","46.231.133.106:80","97.77.104.22:80","54.68.135.82:80","178.62.247.158:3128","80.82.64.30:3128","107.151.152.210:80","92.222.93.240:8888","78.46.243.54:3128","69.36.65.214:1080","51.255.192.42:3128","159.122.253.8:3128","51.255.50.106:3128","207.91.10.234:8080","5.45.73.218:80","52.27.22.139:3128","45.63.69.40:8080","206.222.24.100:8080","163.44.119.72:8080"] 
def my_proxy(PROXY_HOST,PROXY_PORT): 
    fp = webdriver.FirefoxProfile() 
    # Direct = 0, Manual = 1, PAC = 2, AUTODETECT = 4, SYSTEM = 5 
    print PROXY_PORT 
    print PROXY_HOST 
    fp.set_preference("network.proxy.type", 1) 
    fp.set_preference("network.proxy.http",PROXY_HOST) 
    fp.set_preference("network.proxy.http_port",int(PROXY_PORT)) 
    fp.set_preference("general.useragent.override","Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/4") 
    fp.update_preferences() 
    return webdriver.Firefox(firefox_profile=fp) 


driver = my_proxy(*random.choice(proxies).split(':')) 
driver.get('https://www.google.com.bd/?gws_rd=cr,ssl&ei=AAOlVoeHM4OtuQT84px4') 
print driver.page_source.encode('utf-8')

致谢：我借用了一些代码。

如何访问类实例的属性

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