#編譯環境為python3  #學生信息管理系統包括基本的信息功能，能夠實現學生信息的輸入，查詢，增添和刪除 #基本框架：開始操作菜單，接收輸入選項，調用相應的函數實現對應的功能，循環回到開始菜單， #操作菜單：  student = [] def studentMeau():  print('-'*30)  print('-------學生信息管理系統-------')  print('  1、添加學生信息')  print('  2、刪除學生信息')  print('  3、查詢學生信息')   print('  4、修改學生信息')  print('  5、退出')  print('-'*30) def appendStuInf():  studentInf = {'Name':'','Id':'','Sex':'','Age':'','Project':''}  studentInf['Name'] = input('請輸入學生姓名：')  studentInf['Id'] = input('請輸入學生學號：')  studentInf['Sex'] = input('請輸入學生性別：')  studentInf['Age'] = input('請輸入學生年齡：')  studentInf['Project'] = input('請輸入學生專業：')  student.append(studentInf)  #print(student) def deleteStuInf():  num = input('請輸入要刪除學生的學號：') # for i in range(len(student)): #  if student[i]['Id'] == num: #   student.remove(student[i]) #   break  for stu_inf in student:   if stu_inf['Id'] == num:    student.remove(stu_inf)    break # print(student) def inquireStuInf():  flag = False  num = input('請輸入要查詢學生的學號：')  for stu_inf in student:   if stu_inf['Id'] == num:    print('name: '+stu_inf['Name']+'/n')    print('Id: '+stu_inf['Id']+'/n')    print('Sex: '+stu_inf['Sex']+'/n')    print('Age: '+stu_inf['Age']+'/n')    print('Project: '+stu_inf['Project']+'/n')    flag = True    break  if flag == False:   print('沒有查詢到該生的信息！') def modifyStuInf():  num = input('請輸入要修改學生的學號：')  flag = False  for stu_inf in student:   if stu_inf['Id'] == num:    print('name: '+stu_inf['Name']+'/n')    print('Id: '+stu_inf['Id']+'/n')    print('Sex: '+stu_inf['Sex']+'/n')    print('Age: '+stu_inf['Age']+'/n')    print('Project: '+stu_inf['Project']+'/n')    flag = True    break  if flag == False:   print('沒有該生的信息！')   return  print('1:姓名 ---- 2:學號 ---- 3:性別 ---- 4:年齡 ---- 5:專業 ---- 6:退出'+'/n')  while True:   choice = int(input("請輸入選項序號："))   if choice == 1:    stu_inf['Name'] = input('請重新輸入姓名：')    print('姓名已更正為：'+stu_inf['Name']+'/n')   elif choice == 2:    stu_inf['Id'] = input('請重新輸入學號：')    print('學號已更正為：'+stu_inf['Id']+'/n')       elif choice == 3:    stu_inf['Sex'] = input('請重新輸入性別：')    print('性別已更正為：'+stu_inf['Sex']+'/n')   elif choice == 4:    stu_inf['Age'] = input('請重新輸入年齡：')    print('年齡已更正為：'+stu_inf['Age']+'/n')   elif choice == 5:    stu_inf['Project'] = input('請重新輸入專業：')    print('專業已更正為：'+stu_inf['Project']+'/n')   elif choice == 6:    print('修改完畢！')    break   else:    print('輸入有誤，不予執行!') while True:  studentMeau()  choice = int(input("請輸入選項序號："))  if choice == 1:   #添加學生信息   appendStuInf()  elif choice == 2:   #刪除學生信息   deleteStuInf()  elif choice == 3:   #查詢學生信息   inquireStuInf()  elif choice == 4:   #修改學生信息   modifyStuInf()  elif choice == 5:   print('謝謝使用！')   break  else:   print('輸入有誤，檢查后重新輸入！')