123 lines
3.7 KiB
Python
123 lines
3.7 KiB
Python
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students={"张三":{"name":"张三",
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"ID":202001,
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"语文":89,
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"数学":97,
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"英语":91
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},
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"李四":{"name":"李四",
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"ID":202002,
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"语文":97,
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"数学":81,
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"英语":90
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},
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"王五": {"name": "王五",
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"ID": 202003,
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"语文": 97,
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"数学": 100,
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"英语": 94
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},
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"赵六": {"name": "赵六",
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"ID": 202004,
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"语文": 81,
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"数学": 92,
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"英语": 73
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}
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}
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def showinfo():
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print("-"*110)
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print(''' 学生成绩系统
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1.添加学生信息
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2.删除学生信息
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3.修改学生信息
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4.查询学生信息
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5.学生成绩排序
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6.列出所有学生信息
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7.退出程序''')
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print("-"*110)
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def paixu(a,b):
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return [name for name in students.keys()if students[name][a]>=b]
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c=0
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while True:
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showinfo()
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choice=input("请输入你的选择：")
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if choice=="1":
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id=int(input("要添加的学生的ID："))
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c=0
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for i in students:
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if id==students[i]["ID"]:
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c=1
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break
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if c==1:
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print("学生已在列表中")
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else:
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d1=input("学生姓名：")
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students[d1]={
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"name": d1,
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"ID": id,
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"语文": int(input("语文成绩：")),
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"数学": int(input("数学成绩：")),
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"英语": int(input("英语成绩："))
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}
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elif choice=="2":
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id = int(input("要删除的学生的ID："))
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c = 0
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for i in students:
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if id == students[i]["ID"]:
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c = 1
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break
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if c == 1:
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print("学生没在列表中")
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else:
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d1 = input("学生姓名：")
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del students[d1]
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elif choice=="3":
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id = int(input("要修改的学生的ID："))
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c = 0
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d=0
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for i in students:
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d=i
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if id == students[i]["ID"]:
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c = 1
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break
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if c:
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del students[d]
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d1 = input("学生姓名：")
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students[d1] = {
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"name": d1,
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"ID": id,
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"语文": int(input("语文成绩：")),
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"数学": int(input("数学成绩：")),
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"英语": int(input("英语成绩："))
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}
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else:
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print("不在列表")
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elif choice=="4":
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id = int(input("要查询的学生的ID："))
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for i in students:
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if id == students[i]["ID"]:
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c = 1
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break
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if c == 1:
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print("学生没在列表中")
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else:
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d1 = input("学生姓名：")
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print(d1,students[d1])
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elif choice=="5":
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a=input("学科：")
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b=int(input("筛选成绩："))
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print(paixu(a,b))
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elif choice=="6":
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for i in students:
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print(i,students[i])
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elif choice=="7":
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print("退出程序")
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break
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else:
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print("无效输入，请重新输入")
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