From 5d3cf743b9edae8bd921460b32773e5be057e6e1 Mon Sep 17 00:00:00 2001 From: pp7mvarq2 <3366134468@qq.com> Date: Tue, 21 Nov 2023 12:44:39 +0800 Subject: [PATCH] ADD file via upload --- text1.py | 283 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 283 insertions(+) create mode 100644 text1.py diff --git a/text1.py b/text1.py new file mode 100644 index 0000000..58b5362 --- /dev/null +++ b/text1.py @@ -0,0 +1,283 @@ +import os.path # 导入os.path模块 + + +def menm(): # 菜单 + print('==========================学生信息管理系统==========================') + print('------------------------------请选择如下功能-----------------------------') + print('\t\t\t 1.添加学员') + print('\t\t\t 2.删除学员') + print('\t\t\t 3.修改学员信息') + print('\t\t\t 4.查询学员信息') + print('\t\t\t 5.显示所有学员信息') + print('\t\t\t 6.保存学员信息') + print('\t\t\t 7.退出系统') + print('-------------------------------------------------------------------') + + +filename = 'student.txt' # 文件名 + + +def main(): # 主程序 + while True: + menm() # 调用菜单函数 + choice = int(input('请选择')) + if choice in [0, 1, 2, 3, 4, 5, 6, 7]: + if choice ==7: + answer = input('您确定要退出系统吗？y/n') + if answer == 'y' or answer == 'Y': + print('谢谢您的使用！！!') + break # 退出系统 + else: + continue + elif choice == 1: + insert() + elif choice == 2: + search() + elif choice == 3: + delete() + elif choice == 4: + modify() + elif choice == 5: + sort() + elif choice == 6: + total() + elif choice == 7: + show() + + +def insert(): # 插入信息 + student_list = [] + while True: # 循环输入 + id = input('请输入ID(如1001)：') + if not id: # 防止手滑 + break + + +name = input('请输入姓名：') +if not name: + break + +try: + english = int(input('请输入英语成绩：')) + python = int(input('请输入python成绩：')) + java = int(input('请输入Java成绩：')) +except: +print('输入无效，不是整数类型，请重新输入') +continue +# 将录入的学生信息保存到字典当中 +student = {'id': id, 'name': name, 'english': english, 'python': python, 'java': java} +# 将学生信息添加到列表中 +student_list.append(student) +answer = input('是否继续添加？y/n\n') +if answer == 'y': + continue +else: +break +# 调用save（）函数 +save(student_list) +print('学生信息录入完毕！！！') + + +def save(lst): # 保存 + try: + stu_txt = open(filename, 'a', encoding='utf-8') + +except: +stu_txt = open(filename, 'w', encoding='utf-8') +for item in lst: + stu_txt.write(str(item) + '\n') # 将内容写入文件中 + + +def search(): # 搜索 + student_query = [] + while True: + id = '' + name = '' + if os.path.exists(filename): # 如果可以打开文件 + mode = input('按ID查找请输入1，按姓名查找请输入2：') + if mode == '1': + id = input('请输入要查询的学生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', encoding='utf-8') as rfile: + student = rfile.readlines() + for item in student: + d = dict(eval(item)) + if id != '': + if d['id'] == id: + student_query.append(d) +elif name != '': +if d['name'] == name: + student_query.append(d) +# 显示查询结果 +show_student(student_query) +# 清空列表 +student_query.clear() +answer = input('是否要继续查询？y/n\n') +if answer == 'y': + continue +else: +break +else: +print('暂未保存学生信息') +return + + +def show_student(lst): + if len(lst) == 0: + print('没有查询到学生信息，无数据显示！！！') + return + + +# 定义标题显示格式 +format_title = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}' +print(format_title.format('ID', '姓名', '英语成绩', 'python成绩', 'java成绩', '总成绩')) +# 定义内容的显示格式 +format_data = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}' +for item in lst: + print(format_data.format(item.get('id'), + item.get('name'), + item.get('english'), + item.get('python'), + item.get('java'), + int(item.get('english')) + int(item.get('python')) + int(item.get('java')) + )) + + +def delete(): + while True: + student_id = input('请输入要删除的学生的ID:') + if student_id != '': + if os.path.exists(filename): + with open(filename, 'r', encoding='utf-8') as file: + student_old = file.readlines() + +else: +student_old = [] +flag = False # 标记是否删除 +if student_old: + with open(filename, 'w', encoding='utf-8') as wfile: + d = {} + for item in student_old: + d = dict(eval(item)) # 将字符串转成字典 + if d['id'] != student_id: + wfile.write(str(d) + '\n') +else: +flag = True +if flag: + print(f'id为{student_id}的学生信息已被删除') +else: +print(f'没有找到ID为{student_id}的学生信息') +else: +print('无学生信息') +break +show() # 删除之后要重新显示所有学生信息 +answer = input('是否继续删除？y/n\n') +if answer == 'y': + continue +else: +break + + +def modify(): + show() + if os.path.exists(filename): + with open(filename, 'r', encoding='utf-8') as rfile: + student_old = rfile.readlines() + +else: +return +student_id = input('请输入要修改的学员的ID：') +with open(filename, 'w', encoding='utf-8') as wfile: + for item in student_old: + d = dict(eval(item)) + if d['id'] == student_id: + print('找到学生信息，可以修改他的相关信息了！') + while True: + try: + d['name'] = input('请输入姓名：') + d['english'] = input('请输入英语成绩：') + d['python'] = input('请输入Python成绩：') + d['java'] = input('请输入java成绩：') +except: +print('您的输入有误，请重新输入！！！') +else: +break +wfile.write(str(d) + '\n') +print('修改成功!!！') +else: +wfile.write(str(d) + '\n') +answer = input('是否继续修改其他学生信息呢？y/n\n') +if answer == 'y': + modify() + + +def sort(): + show() + if os.path.exists(filename): + with open(filename, 'r', encoding='utf-8') as rfile: + student_list = rfile.readlines() + + +student_new = [] +for item in student_list: + d = dict(eval(item)) + student_new.append(d) +else: +return +asc_or_desc = input('请选择（0.升序 1.降序:）') +if asc_or_desc == '0': + asc_or_desc_bool = False +elif asc_or_desc == '1': +asc_or_desc_bool = 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java成绩排序 0.按总成绩排序）：') +if mode == '1': + student_new.sort(key=lambda x: int(x['english']), reverse=asc_or_desc_bool) +elif mode == '2': +student_new.sort(key=lambda x: int(x['python']), reverse=asc_or_desc_bool) +elif mode == '3': +student_new.sort(key=lambda x: int(x['java']), reverse=asc_or_desc_bool) +elif mode == '0': +student_new.sort(key=lambda x: int(x['english']) + int(x['python']) + int(x['java']), reverse=asc_or_desc_bool) +else: +print('您的输入有误，请重新输入！！！') +sort() +show_student(student_new) + + +def total(): + if os.path.exists(filename): + with open(filename, 'r', encoding='utf-8') as rfile: + students = rfile.readlines() + if students: + print(f'一共有{len(students)}名学生') + +else: +print('还未录入学生信息') +else: +print('暂未保存数据信息......') + + +def show(): + student_lst = [] + if os.path.exists(filename): + with open(filename, 'r', encoding='utf-8') as rfile: + students = rfile.readlines() + for item in students: + student_lst.append(eval(item)) + + +if student_lst: + show_student(student_lst) +else: +print('暂未保存过数据！！！') + +if __name__ == '__main__': + main() \ No newline at end of file