url = 'https://....search"Accept": "application/json, text/javascript, */*; q=0.01",
 "Accept-Encoding": "gzip, deflate, br",
 "Accept-Language": "zh-CN,zh;q=0.9",
 "Connection": "keep-alive",
 "Cookie": "Hm_lvt_0076fef7e919d8d7b24383dc8f1c852a=1522398473; Hm_lpvt_0076fef7e919d8d7b24383dc8f1c852a=1522398482",
 "Referer": "https://...../index.html" + urllib.parse.quote(param),
 "User-Agent": "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36",
 "X-Requested-With": "XMLHttpRequest"
}
rsp = requests.get(url, headers=header 

from urllib import parse 
 
str1 = 'haha哈哈' 
str2 = parse.quote(str1)  #quote()将字符串进行编码 
print(str2)        #str2=haha%E5%93%88%E5%93%88 
str3 = parse.unquote(str2) #解码字符串 
print(str3)        #str3=haha哈哈