【python】——小程序之电话薄

　　初学python，写一个小程序练习一下。主要功能就是增删改查的一些功能。主要用到的技术：字典的使用，pickle的使用，io文件操作。代码如下：

 import pickle

 #studentinfo = {'netboy': '15011038018',\
 #                               'godboy': '15011235698'}
 studentinfo = {}

 FUNC_NUM = 5

 def write_file(value):
         file = open('student_info.txt', 'wb')
         file.truncate()
         pickle.dump(value, file, True)
         file.close

 def read_file():
         global studentinfo
         file = open('student_info.txt', 'rb')
         studentinfo = pickle.load(file)
         file.close()

 def search_student():
         global studentinfo
         name = input('please input student\'s name:')
         if name in studentinfo:
                 print('name:%s phone:%s' % (name, studentinfo[name]))
         else:
                 print('has no this body')

 def delete_student():
         global studentinfo
         name = input('please input student\'s name:')
         if name in studentinfo:
                 studentinfo.pop(name)
                 write_file(studentinfo)
         else:
                 print('has no this body')

 def add_student():
         global studentinfo
         name = input('please input student\'s name:')
         phone = input('please input phone:')
         studentinfo[name] = phone
         write_file(studentinfo)

 def modifiy_student():
         global studentinfo
         name = input('please input student\'s name:')
         if name in studentinfo:
                 phone = input('please input student\'s phone:')
                 studentinfo[name] = phone
         else:
                 print('has no this name')

 def show_all():
         global studentinfo
         for key, value in studentinfo.items():
                 print('name:' + key + 'phone:' + value)

 func = {1 : search_student, \
         2 : delete_student, \
         3 : add_student, \
         4 : modifiy_student, \
         5 : show_all}

 def menu():
         print('-----------------------------------------------');
         print('1 search student:')
         print('2 delete student:')
         print('3 add student:')
         print('4 modifiy student:')
         print('5 show all student')
         print('6 exit')
         print('-----------------------------------------------');

 def init_data():
         global studentinfo
         file = open('student_info.txt', 'rb')
         studentinfo = pickle.load(file)
         #print(studentinfo)
         file.close()

 init_data()
 while True:
         menu()
         index = int(input())
         if index == FUNC_NUM + 1:
                 exit()
         elif index < 1 or index > FUNC_NUM + 1:
                 print('num is between 1-%d' %  (FUNC_NUM + 1))
                 continue
         #print(index)
         func[index]()

如有错误，或者更好的想法，请指教。