import pymysql
class Student:
def register(self):
print("=============注冊頁面=============")
n = 3
user = input("請輸入賬號：").strip()
while n > 0:
n = n - 1
pass_wd = input("請輸入密碼:").strip()
pass_wd_sec = input("確認你的密碼:").strip()
sql_1 = "insert into student_info(user_name,passwd) values(%s,%s)"
if pass_wd != pass_wd_sec:
print("兩次輸入不一致，請重新輸入！\n")
print("你還有" + str(n) + "次機會!")
continue
else:
res_1 = [user, pass_wd_sec]
cur.execute(sql_1, res_1)
conn.commit()
print("注冊成功！\n")
break
def login(self):
n = 3
sql = "select passwd from student_info where user_name =%s"
res = [user]
cur.execute(sql, res)
psw = cur.fetchall()
while n > 0:
n = n - 1
pass_wd = input("請輸入你的密碼:").strip()
if pass_wd != psw[0][0]:
print("密碼錯誤，請重新輸入！\n")
print("你還有" + str(n) + "次機會！")
continue
else:
print("登錄成功!\n")
break
def achievement(self):
# 這里實現成績錄入與成績查詢
print("=================成績錄入與查詢=====================")
status = input("選擇你的操作 【0:錄入，1:查看，其他:退出】")
while True:
if status == '0':
student_no = input("學號：")
subject_name = input("課程名稱：")
score = int(input("課程分數"))
rest_insert = [student_no, subject_name, score]
cur.execute(sql_insert, rest_insert)
conn.commit()
break
elif status == '1':
student_no = input("學號：")
rest_choice = [student_no]
cur.execute(sql_choice, rest_choice)
rest_cho = cur.fetchall()
for sc in rest_cho:
print(sc)
conn.commit()
break
else:
break
def course_selection(self):
print("\n===================選課模塊===============")
student_no = input("輸入學號：")
while True:
alternative = input("請操作【1|查看我的課程 2|查看當前所有可選課程 3|選課 other|退出】：")
if alternative == "1":
my_res = [student_no]
cur.execute(my_sql, my_res)
my_subject = cur.fetchall()
conn.commit()
for i in my_subject:
print(str(i))
print("以上是你當前所有的課程！\n")
elif alternative == "2":
cur.execute(all_sql)
all_subject = cur.fetchall()
conn.commit()
for i in all_subject:
print(str(i))
print("以上是你當前可選的課程有\n")
elif alternative == "3":
subject_name = input("請輸入你要選擇的課程名稱:\n")
subject_id = input("請輸入你要選擇的課程id:\n")
all_to_my_res = [student_no, subject_id, subject_name]
cur.execute(all_to_my, all_to_my_res)
conn.commit()
print("本次選課結果為" + str(all_to_my_res) + "\n")
else:
print("歡迎下次使用！")
break
if __name__ == '__main__':
user = input("請輸入賬號：").strip()
conn = pymysql.connect(
host="localhost",
port=3306,
user="root",
passwd="mysql",
db="student",
charset="utf8")
cur = conn.cursor()
sql = "select user_name from student_info where user_name =%s"
my_sql = "select subject_id, subject_name from my_subject where student_no = %s;"
sql_insert = "insert into student_score(student_no,subject_name,score) values(%s,%s,%s)"
sql_choice = "select * from student_score where student_no = %s"
all_sql = "select * from subject_choice;"
all_to_my = "insert into my_subject(student_no, subject_id, subject_name) VALUES (%s,%s,%s)"
res = [user]
cur.execute(sql, res)
name = cur.fetchall()
s = Student()
if name == ():
print("賬號不存在，請返回注冊\n")
s.register()
print("=============登錄界面=============")
user = input("請輸入賬號：").strip()
s.login()
s.achievement()
else:
s.login()
s.achievement()
s.course_selection()
cur.close()
conn.close()
