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import sys
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import os
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from database import DataBase
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from student import Student
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# 格式化输出Student数组
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def print_student_info(student_list):
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if isinstance(student_list, list):
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if len(student_list) == 0:
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print('''
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=========================
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没有符合条件的学生信息
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=========================
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''')
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else:
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print("{:<12}\t{:<12}\t{:<12}\t{:<12}\t{:<12}\t{:<12}".format(
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"学号", "姓名",
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"English成绩",
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"python成绩",
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"java成绩",
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"总成绩"))
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for i in student_list:
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print("{:<12}\t{:<12}\t{:<12g}\t{:<12g}\t{:<12g}\t{:<12g}".format(
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i.stuid,
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i.name,
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i.english_grade,
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i.python_grade,
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i.java_grade,
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i.total_grade))
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else:
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print("没有符合条件的学生信息")
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# 添加学生
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def add_student():
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stuid = input("请输入学号：")
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name = input("请输入姓名：")
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english_grade = input("请输入英语成绩：")
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python_grade = input("请输入python成绩：")
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java_grade = input("请输入java成绩：")
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try:
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student = Student(stuid, name, english_grade, python_grade, java_grade)
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DataBase.add_student_info(student)
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# DataBase.add_student_info(student)
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except Exception as e:
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print("输入内容不合法", e)
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isContinue = input("是否继续添加学生y/n(其他任意键)")
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if isContinue is 'y':
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add_student()
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# 查找学生
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def query_student():
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print('''
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=====================================
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1.学号查询
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2.姓名查询
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0.返回菜单(其他任意键)
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=====================================
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''')
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num = input("请输入选择：：")
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if num == '1':
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stuid = input("请输入学号：")
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student_list = DataBase.query_student_info_by_stuid(stuid)
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print_student_info(student_list)
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elif num == '2':
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name = input("请输入姓名：")
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student_list = DataBase.query_student_info_by_name(name)
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print_student_info(student_list)
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else:
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pass
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os.system("pause")
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# 删除学生
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def delete_student():
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stuid = input("请输入学号：")
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student_list = DataBase.query_student_info_by_stuid(stuid)
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print_student_info(student_list)
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if len(student_list) != 0:
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num = input("是否删除该学生y/n(其他任意键)")
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if num == 'y':
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DataBase.delete_student_info_by_stuid(stuid)
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num = input("是否继续删除学生y/n(其他任意键)")
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if num == 'y':
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delete_student()
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# 编辑学生
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def edit_student():
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stuid = input("请输入学号：")
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student_list = DataBase.query_student_info_by_stuid(stuid)
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print_student_info(student_list)
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if len(student_list) != 0:
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print('''
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=====================================
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1.修改改学生信息
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0.退出(其他任意键)
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=====================================
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''')
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num = input("请选择功能")
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if num == '1':
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student = student_list[0]
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student.name = input("请输入修改后的姓名：")
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student.english_grade = input("请输入修改后的English成绩：")
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student.python_grade = input("请输入修改后的python成绩：")
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student.java_grade = input("请输入修改后的java成绩：")
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DataBase.edit_student_info(student)
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num = input("是否继续修改学生信息y/n(其他任意键)")
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if num == 'y':
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edit_student()
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# 排序
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def sort_student():
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sortType = False
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print('''
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======================================
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1.升序
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2.降序
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0.返回菜单(其它任意键)
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======================================
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''')
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num = input("请选择排序方式：")
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if num == '1':
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sortType = False
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elif num == '2':
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sortType = True
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else:
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return
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print('''
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======================================
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1.学号排序
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2.姓名排序
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3.English成绩排序
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4.python成绩排序
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5.java成绩排序
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6.总成绩排序
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0.返回菜单(其它任意键)
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======================================
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''')
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num = input("请选择功能：")
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student_list = DataBase.get_student_list()
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numbers = {
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'1': lambda x: list(x.stuid),
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'2': lambda x: list(x.name),
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'3': lambda x: x.english_grade,
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'4': lambda x: x.python_grade,
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'5': lambda x: x.java_grade,
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'6': lambda x: x.total_grade,
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}
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method = numbers.get(num)
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if method:
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student_list.sort(key=method, reverse=sortType)
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print_student_info(student_list)
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else:
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return
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num = input("继续排序y/n(其它任意键)")
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if num == 'y':
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sort_student()
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# 统计
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def statistics_student_info():
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student_list = DataBase.get_student_list()
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student_num = len(student_list)
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registered_num = 0
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total_grade = 0.0
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average_grade = 0.0
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for item in student_list:
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if item.english_grade < 60 or item.python_grade < 60 or item.java_grade < 60:
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registered_num = registered_num + 1
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total_grade = total_grade + item.total_grade
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average_grade = total_grade / student_num
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print('''
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=======================================================
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学生总人数：{}
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挂科人数：{}
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平均总成绩：{:.2f}
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总成绩：{:g}
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=======================================================
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'''.format(student_num, registered_num, average_grade, total_grade))
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os.system('pause')
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# 展示所有学生信息
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def show_all_student_info():
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student_list = DataBase.get_student_list()
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print_student_info(student_list)
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os.system('pause')
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def quit_sys():
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num = input("是否确认退出y/n(其它任意键)")
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if num == 'y':
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print('''
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=======================
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退出成功
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欢迎下次使用
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========================
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''')
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sys.exit(0)
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def input_result(num):
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numbers = {
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'1': add_student,
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'2': query_student,
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'3': delete_student,
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'4': edit_student,
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'5': sort_student,
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'6': statistics_student_info,
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'7': show_all_student_info,
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'0': quit_sys
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}
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method = numbers.get(num)
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if method:
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method()
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else:
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print("输入不合法")
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os.system("cls")
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def menu():
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print('''
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学生信息管理系统
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======================================
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1.录入学生信息
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2.查找学生信息
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3.删除学生信息
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4.修改学生信息
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5.排序
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6.统计学生信息
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7.显示所有学生信息
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0.退出
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======================================
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''')
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num = input("请选择功能：")
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input_result(num)
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if __name__ == "__main__":
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DataBase.init()
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while True:
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menu()
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