关于python web的问题

 import httplib2

class usd():
    def __init__(self,user_id,password,k_num,k_id):
        self.user_id=user_id
        self.password=password
        self.k_num=[]
        self.k_num=k_num
        self.k_id=[]
        self.k_id=k_id

    def GetCookies(self):
        try:
            header = {
                'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
                'Accept-Encoding': 'gzip, deflate',
                'Accept-Language:zh-CN,zh': 'q=0.8',
                'Cache-Control': 'max-age=0',
                'Connection': 'keep-alive',
                'Content-Length': '26',
                'Content-Type': 'application/x-www-form-urlencoded',
                'Host': 'jwxt.imu.edu.cn',
                'Origin': 'http://jwxt.imu.edu.cn',
                'Referer': 'http://jwxt.imu.edu.cn/',
                'Upgrade-Insecure-Requests': '1',
                'User - Agent': ' Mozilla / 5.0(Windows NT 10.0; Win64; x64) AppleWebKit / 537.36(KHTML, likeGecko) Chrome / 55.0.2883.75Safari / 537.36'
            }
            link = httplib2.Http()
            content,response=link.request("http://jwxt.imu.edu.cn/loginAction.do?zjh="+self.user_id+"&mm="+self.password,"GET",header)
            data=str(response.decode("gb2321")).replace(" ","")
            if "不正确" in data or "你输入的证件号不存在" in data:
                return "login fail"
            else :
                print(content)
                return "login succeed"

        except Exception as f:
            print(f)
            return "login fail"





#  control this class to achieve selecting courses

def main():
    k_num=[]
    k_id=[]
    user_id="0161123434"
    password=""
    w=usd(user_id,password,k_num,k_id)
    data=w.GetCookies()
    print(data)

出现了C:\Users\ASUS\AppData\Local\Programs\Python\Python35\python.exe C:/Users/ASUS/PycharmProjects/untitled1/tests.py

Process finished with exit code 0
问题是怎么回事，新手不懂求解

http://blog.csdn.net/ahzhengzheng/article/details/45076879

你的程序直接退出了，看看你函数中print是否打印出哪一步的数据。这样才知道大概问题范围，提高自己分析能力