1.為了隱藏訪問方式，可以通過兩種方式：

方法一：直接設定一個字典，作為引數傳給request，通過修改Request的headers引數修改
head = {}
head['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36'
req = urllib.request.Request(url,data,head)

#方法二：在request生成之後通過add header()方法修改
req = urllib.request.Request(url,data)
req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36')
 

1.延時訪問：

import urllib.request
import urllib.parse
import json
import time

while True:
    content = input ('請輸入需要翻譯的內容(輸入"q!"退出程式)：')
    if(content == 'q'):
        break
    url = 'http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=dict2.top'


    data = {}
    data['type'] = 'AUTO'
    data['i'] = content
    data['doctype'] = 'json'
    data['xmlVersion ']= '1.8'
    data['keyfrom'] = 'fanyi.web'
    data['ue'] = 'UTF-8'
    data['action'] = 'FY_BY_CLICKBUTTON'
    data['typoResult'] = 'true'
    data = urllib.parse.urlencode(data).encode('utf-8')

    '''
    #隱藏是Python程式訪問的兩種方法
    方法一：直接設定一個字典，作為引數傳給request，通過修改Request的headers引數修改
    head = {}
    head['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36'
    req = urllib.request.Request(url,data,head)
    '''
    #方法二：在request生成之後通過add header()方法修改
    req = urllib.request.Request(url,data)
    req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36')

    response = urllib.request.urlopen(req)
    html = response.read().decode('utf-8')

    target = json.loads(html)
    target = target['translateResult'][0][0]['tgt']
    print("翻譯結果：%s" % target)
    time.sleep(5)
 

import urllib.request
import random

url = 'http://www.whatismyip.com.tw'
#找個代理Ip的網站 查詢一些免費IP
iplist =  ['171.13.37.210:808','192.129.229.223:9001','61.237.131.59:80','222.94.144.86:808']

proxy_support = urllib.request.ProxyHandler({'http':random.choice(iplist)})

opener = urllib.request.build_opener(proxy_support)
opener.add_headers = [('User-Agent:','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36')]
urllib.request.install_opener(opener)

response = urllib.request.urlopen(url)

html = response.read().decode('utf-8')

print(html)