摘要:"%id)cur.executewhile1:num=cur.fetchone()ifnum==None:breakprintconn.commit()cur.close()conn.close()time.sleep(1.4)#修改学生信息defalter_infos():conn=pymysql.connectcur=conn.cursor()cur.executewhile1:num=cur.fetchone()ifnum==None:breakprintid=inputprint("找到了这名学生,可以修改他的信息!
importpymysql
#2.建连
conn = pymysql.connect("localhost","root",'root','李森')
print(conn)
#3.获取游标
cur =conn.cursor()
#4.增
sql="insert into student_1 values(default,%s,%s,%s,%s)"cur.execute(sql,('张三','4','男','上海'))
#删
sql ="delete from student_1 where id = 33"cur.execute(sql)
#改
sql = "update student_1 set name = %s where id = %s"cur.execute(sql,('卫思敏',"20"))
#5.提交
conn.commit()
#6.关游标,关连接
cur.close()
conn.close()
importpymysql
importtime
defprint_infos():
print("=" * 30)
print("欢迎使用学生管理系统")
print("1,添加学生信息")
print("2,查找学生信息")
print("3,删除学生信息")
print("4,修改学生信息")
print("5.显示学生信息")
print("6,退出系统")
print("=" * 30)
#录学生信息
defadd_infos():
id = input("请输入学号")
name = input("请输入你的名字")
age = input("请输入你的年龄")
sex = input("请输入你的性别")
addr = input("请输入你的地址")
conn = pymysql.connect(host="localhost", port=3306, user="root", passwd='root', db='李森',charset='utf8')
cur =conn.cursor()
sql = "insert into student_1 values(%s,%s,%s,%s,%s)"cur.execute(sql, (id, name,age,sex,addr))
conn.commit()
cur.close()
conn.close()
time.sleep(1.4)
#查找学生信息
deffind_infos():
a = input("按学号查输入1;按姓名查输//入2:")
if a == "1":
id = input("请输入学生ID:")
conn = pymysql.connect('localhost', user='root', passwd='root', db='李森')
cur =conn.cursor()
sql = "select * from student_1 where id = %s"cur.execute(sql, id)
a_1 =cur.fetchone()
if a_1 isNone:
print("无数据信息")
else:
print("ID:%d,名字:%s,年龄:%s,性别:%s,地址:%s," % (a_1[0], a_1[1], a_1[2], a_1[3], a_1[4],))
conn.commit()
cur.close()
conn.close()
elif a == "2":
name = input("请输入学生名字:")
conn = pymysql.connect('localhost', user='root', passwd='root', db='李森')
cur =conn.cursor()
sql = "select * from student_1 where name = %s"cur.execute(sql, name)
a_2 =cur.fetchone()
if a_2 isNone:
print("无数据信息")
else:
print("ID:%d,名字:%s,年龄:%s,性别:%s,地址:%s" % (a_2[0], a_2[1], a_2[2], a_2[3], a_2[4],))
conn.commit()
cur.close()
conn.close()
time.sleep(1.4)
#删除学生信息
defdel_infos():
id = input("请输入要删除的学生学号:")
conn = pymysql.connect('localhost', user='root', passwd='root', db='李森')
cur =conn.cursor()
sql = "delete from student_1 where id = %s"cur.execute(sql, id)
print("ID为%s的学生信息已经被删除。。。" %id)
cur.execute("select * from student_1")
while 1:
num =cur.fetchone()
if num ==None:
break
print("ID:%d,名字:%s,年龄:%s,性别:%s,地址:%s" % (num[0], num[1], num[2], num[3], num[4]))
conn.commit()
cur.close()
conn.close()
time.sleep(1.4)
#修改学生信息
defalter_infos():
conn = pymysql.connect('localhost', user='root', passwd='root', db='李森')
cur =conn.cursor()
cur.execute("select * from student_1")
while 1:
num =cur.fetchone()
if num ==None:
break
print("ID:%d,名字:%s,年龄:%s,性别:%s,地址:%s" % (num[0], num[1], num[2], num[3], num[4]))
id = input("请输入要修改的学生ID:")
print("找到了这名学生,可以修改他的信息!")
name = input("请输入姓名:")
age = input("请输入年龄:")
sex = input("请输入性别:")
addr = input("请输入地址:")
sql_1 = "update student_1 set name = %s where id = %s"cur.execute(sql_1, (name, id))
sql_2 = "update student_1 set age = %s where id = %s"cur.execute(sql_2, (age, id))
sql_3 = "update student_1 set sex = %s where id = %s"cur.execute(sql_3, (sex, id))
sql_4 = "update student_1 set addr = %s where id = %s"cur.execute(sql_4, (addr, id))
conn.commit()
cur.close()
conn.close()
time.sleep(1.4)
#显示所有学生信息
defshow_infos():
conn = pymysql.connect('localhost', user='root', passwd='root', db='李森')
cur =conn.cursor()
cur.execute("select * from student_1")
while 1:
num =cur.fetchone()
if num ==None:
break
print("ID:%d,名字:%s,年龄:%s,性别:%s,地址:%s" % (num[0], num[1], num[2], num[3], num[4]))
conn.commit()
cur.close()
conn.close()
time.sleep(1.4)
whileTrue:
print_infos()
num = input("请选择:")
if num == "1":
while 1:
add_infos()
aa = input("是否继续添加?(y/n):")
if aa == "y":
continue
else:
break
elif num == "2":
while 1:
find_infos()
bb = input("是否继续查询?(y/n):")
if bb == "y":
continue
else:
break
elif num == "3":
while 1:
del_infos()
cc = input("是否继续删除?(y/n):")
if cc == "y":
continue
else:
break
elif num == "4":
while 1:
alter_infos()
dd = input("是否继续修改其他学生信息?(y/n):")
if dd == "y":
continue
else:
break
elif num == "5":
show_infos()
elif num == "6":
print("欢迎下次使用")
break
else:
print("输入错误,请重新输入。")