import urllib.request

def load_baidu():
    url= "https://www.baidu.com"
    header = {
        #瀏覽器的版本
        "User-Agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36",
        # "haha":"hehe"
    }


    #建立請求物件
    request = urllib.request.Request(url)
    
 
#動態的去新增head的資訊
    request.add_header("User-Agent","Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36")
    #請求網路資料(不在此處增加請求頭資訊因為此方法系統沒有提供引數)
    response = urllib.request.urlopen(request)
    print(response)
    data = response.read().decode("
 
utf-8")

    #獲取到完整的url
    final_url = request.get_full_url()
    print(final_url)

    #響應頭
    # print(response.headers)
    #獲取請求頭的資訊(所有的頭的資訊)
    # request_headers = request.headers
    # print(request_headers)
    #(2)第二種方式列印headers的資訊
    #注意點:首字母需要大寫,其他字母都小寫
    request_headers = request.get_header("
 
User-agent")
    # print(request_headers)
    with open("02header.html","w")as f:
        f.write(data)



load_baidu()