From b62e6687ea8c7dce0431bdac510020022ca59e04 Mon Sep 17 00:00:00 2001 From: p32co5a4p <1346684031@qq.com> Date: Thu, 27 Jun 2024 18:24:14 +0800 Subject: [PATCH] ADD file via upload --- 学生管理系统.py | 291 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 291 insertions(+) create mode 100644 学生管理系统.py diff --git a/学生管理系统.py b/学生管理系统.py new file mode 100644 index 0000000..eca3ab8 --- /dev/null +++ b/学生管理系统.py @@ -0,0 +1,291 @@ +import re +import os + +filename = "students.txt" + + +def menu(): + print(''' + ╔———————学生信息管理系统————————╗ + │ │ + │ =============== 功能菜单 =============== │ + │ │ + │ 1 录入学生信息 │ + │ 2 查找学生信息 │ + │ 3 删除学生信息 │ + │ 4 修改学生信息 │ + │ 5 排序 │ + │ 6 统计学生总人数 │ + │ 7 显示所有学生信息 │ + │ 0 退出系统 │ + │ ========================================== │ + │ 说明：通过数字或↑↓方向键选择菜单 │ + ╚———————————————————————╝ + ''') + + +def main(): + ctrl = True + while (ctrl): + menu() + option = input("请选择：") + option_str = re.sub("\D", "", option) + if option_str in ['0', '1', '2', '3', '4', '5', '6', '7']: + option_int = int(option_str) + if option_int == 0: + print('您已退出学生成绩管理系统！') + ctrl = False + elif option_int == 1: + insert() + elif option_int == 2: + search() + elif option_int == 3: + delete() + elif option_int == 4: + modify() + elif option_int == 5: + sort() + elif option_int == 6: + total() + elif option_int == 7: + show() + + +'''1 录入学生信息''' + + +def insert(): + stdentList = [] + mark = True + while mark: + id = input("请输入ID（如 1001）：") + if not id: + break + name = input("请输入名字：") + if not name: + break + try: + english = int(input("请输入英语成绩：")) + python = int(input("请输入Python成绩：")) + c = int(input("请输入C语言成绩：")) + except: + print("输入无效，不是整型数值．．．．重新录入信息") + continue + stdent = {"id": id, "name": name, "english": english, "python": python, "c": c} # 将输入的学生信息保存到字典 + stdentList.append(stdent) + inputMark = input("是否继续添加？（y/n）:") + if inputMark == "y": + mark = True + else: + mark = False + save(stdentList) + print("学生信息录入完毕！！！") + +def save(student): + try: + students_txt = open(filename, "a") + except Exception as e: + students_txt = open(filename, "w") + for info in student: + students_txt.write(str(info) + "\n") + students_txt.close() + + +'''2 查找学生成绩信息''' + + +def search(): + mark = True + student_query = [] + while mark: + id = "" + name = "" + if os.path.exists(filename): + mode = input("按ID查输入1；按姓名查输入2：") + if mode == "1": + id = input("请输入学生ID：") + elif mode == "2": + name = input("请输入学生姓名：") + else: + print("您的输入有误，请重新输入！") + search() + with open(filename, 'r') as file: + student = file.readlines() + for list in student: + d = dict(eval(list)) + if id is not "": + if d['id'] == id: + student_query.append(d) + elif name is not "": + if d['name'] == name: + student_query.append(d) + show_student(student_query) + student_query.clear() + inputMark = input("是否继续查询？（y/n）:") + if inputMark == "y": + mark = True + else: + mark = False + else: + print("暂未保存数据信息...") + return + + +'''3 删除学生成绩信息''' + + +def delete(): + mark = True + while mark: + studentId = input("请输入要删除的学生ID：") + if studentId is not "": + if os.path.exists(filename): + with open(filename, 'r') as rfile: + student_old = rfile.readlines() + else: + student_old = [] + ifdel = False + if student_old: + with open(filename, 'w') as wfile: + d = {} + for list in student_old: + d = dict(eval(list)) + if d['id'] != studentId: + wfile.write(str(d) + "\n") + else: + ifdel = True + if ifdel: + print("ID为 %s 的学生信息已经被删除..." % studentId) + else: + print("没有找到ID为 %s 的学生信息..." % studentId) + else: + print("无学生信息...") + break + show() + inputMark = input("是否继续删除？（y/n）:") + if inputMark == "y": + mark = True + else: + mark = False + + +'''4 修改学生成绩信息''' + + +def modify(): + show() + if os.path.exists(filename): + with open(filename, 'r') as rfile: + student_old = rfile.readlines() + else: + return + studentid = input("请输入要修改的学生ID：") + with open(filename, "w") as wfile: + for student in student_old: + d = dict(eval(student)) + if d["id"] == studentid: + print("找到了这名学生，可以修改他的信息！") + while True: + try: + d["name"] = input("请输入姓名：") + d["english"] = int(input("请输入英语成绩：")) + d["python"] = int(input("请输入Python成绩：")) + d["c"] = int(input("请输入C语言成绩：")) + except: + print("您的输入有误，请重新输入。") + else: + break + student = str(d) + wfile.write(student + "\n") + print("修改成功！") + else: + wfile.write(student) + mark = input("是否继续修改其他学生信息？（y/n）：") + if mark == "y": + modify() + + +'''5 排序''' + + +def sort(): + show() + if os.path.exists(filename): + with open(filename, 'r') as file: + student_old = file.readlines() + student_new = [] + for list in student_old: + d = dict(eval(list)) + student_new.append(d) + else: + return + ascORdesc = input("请选择（0升序；1降序）：") + if ascORdesc == "0": + ascORdescBool = False + elif ascORdesc == "1": + ascORdescBool = True + else: + print("您的输入有误，请重新输入！") + sort() + mode = input("请选择排序方式（1按英语成绩排序；2按Python成绩排序；3按C语言成绩排序；0按总成绩排序）：") + if mode == "1": + student_new.sort(key=lambda x: x["english"], reverse=ascORdescBool) + elif mode == "2": + student_new.sort(key=lambda x: x["python"], reverse=ascORdescBool) + elif mode == "3": + student_new.sort(key=lambda x: x["c"], reverse=ascORdescBool) + elif mode == "0": + student_new.sort(key=lambda x: x["english"] + x["python"] + x["c"], reverse=ascORdescBool) + else: + print("您的输入有误，请重新输入！") + sort() + show_student(student_new) + + +''' 6 统计学生总数''' + + +def total(): + if os.path.exists(filename): + with open(filename, 'r') as rfile: + student_old = rfile.readlines() + if student_old: + print("一共有 %d 名学生！" % len(student_old)) + else: + print("还没有录入学生信息！") + else: + print("暂未保存数据信息...") + + +''' 7 显示所有学生信息 ''' + + +def show(): + student_new = [] + if os.path.exists(filename): + with open(filename, 'r') as rfile: + student_old = rfile.readlines() + for list in student_old: + student_new.append(eval(list)) + if student_new: + show_student(student_new) + else: + print("暂未保存数据信息...") + + + +def show_student(studentList): + if not studentList: + print("(o@.@o) 无数据信息 (o@.@o) \n") + return + format_title = "{:^6}{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^10}" + print(format_title.format("ID", "名字", "英语成绩", "Python成绩", "C语言成绩", "总成绩")) + format_data = "{:^6}{:^12}\t{:^12}\t{:^12}\t{:^12}\t{:^12}" + for info in studentList: + print(format_data.format(info.get("id"), info.get("name"), str(info.get("english")), str(info.get("python")), + str(info.get("c")), + str(info.get("english") + info.get("python") + info.get("c")).center(12))) + + +if __name__ == "__main__": + main()