from pymysql import *
import hashlib
import time
# import hashlib
zh = None
mm = None
exit = True
a = True
# conn = connect(host = 'localhost', port = 3306, database ='beicai', user = 'root' ,password = '123' ,charset = 'utf8')
# cs1 = conn.cursor()
def login():
print('请注册!')
print('请输入账号:')
ac = input()
while True:
print('请输入密码:')
pw = input()
print('请确认密码:')
pw1 = input()
if pw != pw1:
print('两次输入不一致,请重新输入！')
else:
global zh
global mm
sha1 =hashlib.sha1()
sha1.update(pw.encode('utf-8'))
pw_jm = sha1.hexdigest()
zh = ac
mm = pw_jm
cs1.execute("insert into ac (account,password) values(%s,%s)",(zh,mm))
# cs1.execute("insert into ac (account,password) values({},{})".format(zh, pw))
print('注册成功！')
break
conn.commit()
conn.close()
cs1.close()
def log_in():
# conn = connect(host='localhost', port=3306, database='beicai', user='root', password='123', charset='utf8')
# cs1 = conn.cursor()
print('请登录:')
cs1.execute("select account,password from ac ")
result = cs1.fetchall()
while a:
print('请输入账号:')
ac = input()
print('请输入密码:')
pw1 = input()
sha2 =hashlib.sha1()
sha2.update(pw1.encode('utf-8'))
pw1_jm =sha2.hexdigest()
# cs1.execute("select account,password from ac ")
# result = cs1.fetchall()
# print(pw1_jm)
for i in result :
if i[0] == ac and i[1] == pw1_jm :
print('登录成功！')
global a
a = False
else :
# i[0] != ac or i[1] != pw1_jm :
print('账号或密码有误,请重新登录！')
def addInfo():
conn = connect(host='localhost', port=3306, database='beicai', user='root', password='123', charset='utf8')
cs1 = conn.cursor()
print('请输入学生信息：')
n = input('姓名：')
a = input('年龄:')
g = input('性别:')
ad = input('住址:')
zn = input('专业:')
xn = input('学院:')
zid = input('z_id:')
xid = input('x_id:')
cs1.execute('insert into student (name,age,sen,z_id,address) values (%s,%s,%s,%s,%s)',(n,a,g,zid,ad))
cs1.execute('insert into profession (z_name,x_id) values (%s,%s)',(zn,xid))
cs1.execute('insert into college (x_name) values (%s)',(xn))
print('输入成功！')
conn.commit()
conn.close()
cs1.close()
def query():
# a =cs1.execute('select * from student')
# result = cs1.fetchall()
# for i in result :
# print(i)
print('选择查询目标：')
print('1.查询所有男性学员')
print('2.查询人工智能学员的人数')
print('3.查询所有学员的全部信息')
print('4查询年龄在18-20之间的学员人数')
print('5.查询年龄在20以上的男性并且专业是人工智能的学员')
n = input()
if n == '1' :
cs1.execute("select group_concat(name),sen from student where sen = '男' ")
result = cs1.fetchall()
# for i in result :
print()
print()
print('**查询所有男性学员**')
print(*result)
elif n == '2' :
cs1.execute("select count(z_name) as 人工智能学院的人数 from student st ,profession pr, college co where(z_name = '人工智能') and (st.id = pr.id and pr.id = co.id)")
result = cs1.fetchone()
print()
print()
print('**人工智能学员的人数为**')
print(*result ,end = '人')
print()
elif n == '3' :
cs1.execute("select st.id,st.age,st.sen,st.address,pr.z_name,co.x_name from student st,profession pr , college co where st.id= pr.id and pr.id = co.id")
result = cs1.fetchall()
print()
print()
print('**所有学生的信息**')
for i in result :
print()
print(*i)
elif n == '4' :
cs1.execute("select count(age) as 18至20岁之间的人数 from student st ,profession pr ,college co where (age between 18 and 20 ) and (st.id = pr.id and pr.id = co.id)")
result = cs1.fetchone()
print()
print()
print('**18-20岁学员的人数**')
print(*result,end = '人')
print()
elif n == '5':
cs1.execute("select st.id,st.age,st.sen,st.address,pr.z_name,co.x_name from student st,profession pr,college co where (age >20 )and (sen = '男') and (z_name = '人工智能') and (st.id = pr.id and pr.id = co .id)")
result = cs1.fetchall()
print()
print()
print('**20岁以上的男性人工智能学员的信息**')
print()
for i in result :
print(*i)
else :
print('输入有误')
def option():
print('请选择:')
while exit:
# print('为啥啊 ')
conn = connect(host='localhost', port=3306, database='beicai', user='root', password='123', charset='utf8')
cs1 = conn.cursor()
print('1.添加学生信息')
print('2.查询学生信息')
print('3.返回上一层')
print('4.退出系统')
a = input()
if a == '1':
addInfo()
elif a == '2':
query()
elif a == '3':
break
elif a == '4':
global exit
exit = False
print('谢谢使用,再见！')
else:
print('输入有误,请重新输入！')
if __name__ =='__main__' :
print('***北财学生管理系统***')
print()
print()
print()
while exit:
conn = connect(host='localhost', port=3306, database='beicai', user='root', password='123', charset='utf8')
cs1 = conn.cursor()
print('1.注册')
print('2.登录')
print('3.退出')
n = input()
if n == '1':
login()
elif n == '2':
log_in()
option()
elif n == '3':
print('谢谢使用，再见！')
break