有時(shí)候，我們需要用到代理IP，比如在爬蟲(chóng)的時(shí)候，但是得到了IP之后，可能不知道怎么驗(yàn)證這些IP是不是有效的，這時(shí)候我們可以使用Python攜帶該IP來(lái)模擬訪問(wèn)某一個(gè)網(wǎng)站，如果多次未成功訪問(wèn)，則說(shuō)明這個(gè)代理是無(wú)效的。

代碼如下：

import requestsimport randomimport timehttp_ip = [ ’118.163.13.200:8080’, ’222.223.182.66:8000’, ’51.158.186.242:8811’, ’171.37.79.129:9797’, ’139.255.123.194:4550’]for i in range(10): try:ip_proxy = random.choice(http_ip)proxy_ip = { ’http’: ip_proxy, ’https’: ip_proxy,}print(’使用代理的IP:’, proxy_ip)response = requests.get('http://httpbin.org/ip', proxies=proxy_ip).textprint(response)print(’當(dāng)前IP有效’)time.sleep(2) except Exception as e:print(e.args[0])print(’當(dāng)前IP無(wú)效’)continue

運(yùn)行結(jié)果如下：

使用代理的IP: {’http’: ’118.163.13.200:8080’, ’https’: ’118.163.13.200:8080’}HTTPConnectionPool(host=’118.163.13.200’, port=8080): Max retries exceeded with url: http://httpbin.org/ip (Caused by ProxyError(’Cannot connect to proxy.’, NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x00000247674F5F88>: Failed to establish a new connection: [WinError 10060] 由于連接方在一段時(shí)間后沒(méi)有正確答復(fù)或連接的主機(jī)沒(méi)有反應(yīng)，連接嘗試失敗。’)))當(dāng)前IP無(wú)效使用代理的IP: {’http’: ’51.158.186.242:8811’, ’https’: ’51.158.186.242:8811’}{ 'origin': '51.158.186.242'}

當(dāng)前IP有效使用代理的IP: {’http’: ’222.223.182.66:8000’, ’https’: ’222.223.182.66:8000’}{ 'origin': '139.202.62.84, 222.223.182.66'}

當(dāng)前IP有效使用代理的IP: {’http’: ’51.158.186.242:8811’, ’https’: ’51.158.186.242:8811’}{ 'origin': '51.158.186.242'}

當(dāng)前IP有效使用代理的IP: {’http’: ’51.158.186.242:8811’, ’https’: ’51.158.186.242:8811’}{ 'origin': '51.158.186.242'}

當(dāng)前IP有效使用代理的IP: {’http’: ’222.223.182.66:8000’, ’https’: ’222.223.182.66:8000’}HTTPConnectionPool(host=’222.223.182.66’, port=8000): Max retries exceeded with url: http://httpbin.org/ip (Caused by ProxyError(’Cannot connect to proxy.’, NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x00000247675067C8>: Failed to establish a new connection: [WinError 10060] 由于連接方在一段時(shí)間后沒(méi)有正確答復(fù)或連接的主機(jī)沒(méi)有反應(yīng)，連接嘗試失敗。’)))當(dāng)前IP無(wú)效使用代理的IP: {’http’: ’139.255.123.194:4550’, ’https’: ’139.255.123.194:4550’}HTTPConnectionPool(host=’139.255.123.194’, port=4550): Max retries exceeded with url: http://httpbin.org/ip (Caused by ProxyError(’Cannot connect to proxy.’, NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x00000247674F55C8>: Failed to establish a new connection: [WinError 10060] 由于連接方在一段時(shí)間后沒(méi)有正確答復(fù)或連接的主機(jī)沒(méi)有反應(yīng)，連接嘗試失敗。’)))當(dāng)前IP無(wú)效使用代理的IP: {’http’: ’51.158.186.242:8811’, ’https’: ’51.158.186.242:8811’}{ 'origin': '51.158.186.242'}

當(dāng)前IP有效使用代理的IP: {’http’: ’51.158.186.242:8811’, ’https’: ’51.158.186.242:8811’}{ 'origin': '51.158.186.242'}

當(dāng)前IP有效使用代理的IP: {’http’: ’222.223.182.66:8000’, ’https’: ’222.223.182.66:8000’}HTTPConnectionPool(host=’222.223.182.66’, port=8000): Max retries exceeded with url: http://httpbin.org/ip (Caused by ProxyError(’Cannot connect to proxy.’, NewConnectionError(’<urllib3.connection.HTTPConnection object at 0x0000024767514908>: Failed to establish a new connection: [WinError 10060] 由于連接方在一段時(shí)間后沒(méi)有正確答復(fù)或連接的主機(jī)沒(méi)有反應(yīng)，連接嘗試失敗。’)))當(dāng)前IP無(wú)效

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