import urllib.request
import string
import urllib.parse
def get_params():
    url="https://www.baidu.com/s?"
    params={
        "wd":"中文",
        "key":"zhang",
        "value":"san"
}
str_params = urllib.parse.urlencode((params))
#wd=%E4%B8%AD%E6%96%87&key=zhang&value=san上面这个函数的作用
print(str_params)
 final_url=url+str_params
    #将带有中文的url,转义成计算机可识别的url
    end_url = urllib.parse.quote(final_url,safe=string.printable)
    response = urllib.request.urlopen(end_url)
    data = response.read().decode("utf-8")
    print(data)
get_params()