这篇文章主要介绍了如何用python实现简单的学生成绩管理系统的相关知识，内容详细易懂，操作简单快捷，具有一定借鉴价值，相信大家阅读完这篇如何用python实现简单的学生成绩管理系统文章都会有所收获，下面我们一起来看看吧。
需求：
代码：
import osfilename = 'student.txt'def main(): while True: menu() choice = int(input("请选择：")) if choice in [0,1,2,3,4,5,6,7]: if choice==0: answer = input("你确定要退出吗？y/n") if answer =='y' or answer =='Y': print("谢谢使用！") break 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() else: show()# 菜单def menu(): print("====================学生成绩管理系统=========================") print("======================功能菜单==============================") print("\t\t1、录入学生信息") print("\t\t2、查找学生信息") print("\t\t3、删除学生信息") print("\t\t4、修改学生信息") print("\t\t5、排序") print("\t\t6、统计学生人数") print("\t\t7、显示所有学生信息") print("\t\t0、退出系统") print("--------------------------------------------------------------")# 插入def insert(): student_list=[] while True: id = input('请输入ID(如1001):') if not id: break name = input('请输入姓名：') if not name: break try: english=int(input("input english grade：")) python=int(input("input python grade：")) java=int(input("input java grade：")) except: print("输入成绩无效！重新输入！") continue student = {'id':id,'name':name,'english':english,'python':python,'java':java} student_list.append(student) answer = input("是否继续添加信息！？：'y/n'") if answer == 'y': continue else: break # 调用save函数将其保存在文本当中 save(student_list) print("学生信息录入成功！")# 保存def save(lst): 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') stu_txt.close()# 搜索def search(): while True: student_name = input("请输入你要查找的学生姓名：") if student_name: if os.path.exists(filename): with open(filename,'r',encoding='utf-8') as rfile: student_old = rfile.readlines() else: student_old = [] if student_old: d = {} flag = False for item in student_old: d = dict(eval(item)) if d['name'] == student_name: flag = True student_show(d) else: pass else: print("无学生信息，请添加！") if flag: print("查询成功") else: print("查询失败") else: print("没有输入学生姓名！") answer = input("请问是否继续查询：y/n") if answer == "y": continue else: break# 展示个人信息def student_show(dic): 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')) format_data = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}' print(format_data.format(dic.get('id'), dic.get('name'), dic.get('english'), dic.get('python'), dic.get('java'), int(dic.get('english'))+int(dic.get('python'))+int(dic.get('java')), ))# 删除def delete(): while True: student_id = input("请输入要删除的学生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 if student_old: with open(filename,'w',encoding='utf-8') as wfile: d={} for item in student_old: d = dict(eval(item)) if d['id']!=student_id: wfile.write(str(d)+"\n") else: flag = True if flag: print(f"{student_id}已经被删除！") else: print(f"{student_id}没有找到!") else: print("无学生信息！") break show() answer = input("是否继续删除？y/n") if answer == 'y': continue else: break else: print("请输入要删除的ID：") continue# 修改 def modify(): while True: student_id = input("请输入要修改的学生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=[] if student_old: with open(filename,'w',encoding='utf-8') as wfile: d = {} for item in student_old: d = dict(eval(item)) if d['id'] == student_id: answer = input('已经找到该学生信息，是否修改：y/n？') flag = False if answer: d['name']=input("姓名：") d['english']=int(input("english：")) d['python']=int(input("python：")) d['java']=int(input("java：")) wfile.write(str(d)+"\n") flag = True else: wfile.write(str(d)+"\n") break else: wfile.write(str(d)+"\n") if flag: print("修改成功！") else: print("修改失败！") else: print("无学生信息，请添加") answer = input("请问是否继续修改？y/n") if answer == "y": continue else: break else: print("输入错误！")# 排序 def sort(): while True: if os.path.exists(filename): with open(filename,'r',encoding='utf-8') as file: student_old = file.readlines() student_new = [] d={} for item in student_old: d=dict(eval(item)) student_new.append(d) asc_and_desc = int(input("怎么排序:0 升序 1 降序：")) choice = int(input("按照什么排序:1 english 2 python 3 java 0 总成绩：")) if choice == 1: student_new.sort(key=lambda x:int(x['english']),reverse=asc_and_desc) elif choice == 2: student_new.sort(key=lambda x:int(x['python']),reverse=asc_and_desc) elif choice == 3: student_new.sort(key=lambda x:int(x['java']),reverse=asc_and_desc) elif choice == 0: student_new.sort(key=lambda x:int(x['english'])+int(x['python'])+int(x['java']),reverse=asc_and_desc) else: print("输入有误") sort() else: print("无学生信息") 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')) format_data = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}' for dic in student_new: print(format_data.format(dic.get('id'), dic.get('name'), dic.get('english'), dic.get('python'), dic.get('java'), int(dic.get('english'))+int(dic.get('python'))+int(dic.get('java')), )) answer = input("请问是否继续排序？y/n") if answer == "y": continue else: break# 总人数def total(): if os.path.exists(filename): with open(filename,'r',encoding='utf-8') as file: student_old = file.readlines() print('一共有',len(student_old),'名学生！') else: print("无人员资料") import msvcrt msvcrt.getch()# 展示def show(): if os.path.exists(filename): with open(filename,'r',encoding='utf-8') as file: student_old = file.readlines() d = {} students = [] for item in student_old: d = dict(eval(item)) students.append(d) else: print("没有信息！") if len(students): 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')) format_data = '{:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}' for dic in students: print(format_data.format(dic.get('id'), dic.get('name'), dic.get('english'), dic.get('python'), dic.get('java'), int(dic.get('english'))+int(dic.get('python'))+int(dic.get('java')), )) else: print("无人员信息！") import msvcrt msvcrt.getch()if __name__ == '__main__': main()关于“如何用python实现简单的学生成绩管理系统”这篇文章的内容就介绍到这里，感谢各位的阅读！相信大家对“如何用python实现简单的学生成绩管理系统”知识都有一定的了解，大家如果还想学习更多知识，欢迎关注编程网行业资讯频道。
