Python学習者情報管理システム(v 2.0)

       ，     ，       
#       
def add_student():

    name = input('        :')
    age = input('        :')
    sex = input('        :')
    phone = input('        :')
    student = [name,age,sex,phone]
    student_list.append(student)


#       
def query_student():
    # 1.      
    # 2.                     

    for x in range(0, len(student_list)):
        #   x  ，            
        student = student_list[x]
        name = student[0]
        age = student[1]
        sex = student[2]
        phone = student[3]

        print ('  %s ：  %s   %s   %s   %s'%(x,name,age,sex,phone))


#       
def update_student():

    #          ，    ，         
    if len(student_list) == 0:
        print ('      ，      ！')
        #          
        return

    # 1.      
    query_student()
    # 2.          
    num = input('           :')
    # 3.  
    num = int(num)
    # 4.               
    while num not in range(0,len(student_list)):
        num = input('     ，     ：')
        num = int(num)
    # 5.                   
    student = student_list[num]
    new_name = input('         （%s）：'%student[0])
    new_age = input('         （%s）：'%student[1])
    new_sex = input('         （%s）：'%student[2])
    new_phone = input('         （%s）：'%student[3])
    # 6.         
    student[0] = new_name
    student[1] = new_age
    student[2] = new_sex
    student[3] = new_phone
    print ('    ')

#       
# 1.          2.       3.        
def delete_student():

    #          ，    ，         
    if len(student_list) == 0:
        print ('      ，      ！')
        #          
        return

    print ('1.         ')
    print ('2.      ')
    #     
    num = input('       ：')
    #   
    num = int(num)
    while num not in range(1, 3):
        num = input('     ，     ：')
        num = int(num)
    if num == 1:
        # 1.      
        query_student()
        index = input('           :')
        index = int(index)
        # 4.               
        while index not in range(0, len(student_list)):
            index = input('     ，     ：')
            index = int(index)
        #          
        del student_list[index]
        # student_list.pop(index)
    else:
        #     
        rs = input('         ？y(  )/n(  ):')
        if rs == 'y':
            #          
            student_list.clear()
        else:
            print ('       ！')
def save_data():
    # 1.    
    file_handle = open('studentv2.txt', mode='w')
    # 2.    
    for student in student_list:
        # for              ，
        # join()         ，               
        s = ' '.join(student)
        #   
        file_handle.write(s)
        file_handle.write('
')
    file_handle.close()
#     
#   os  
import os

def read_date():
    rs = os.path.exists('studentv2.txt')
    if rs == True:
        file_handle = open('studentv2.txt', mode='r')
        contents = file_handle.readlines()
        for msg in contents:
            msg = msg.strip('
')
            student = msg.split(' ')
            student_list.append(student)




#        ，         
student_list = []
read_date()

while True:
    print ('******      v2.0******')
    print ('******    ：Mr.Lei ******')
    print ('*    *   1.       *    *')
    print ('*    *   2.       *    *')
    print ('*    *   3.       *    *')
    print ('*    *   4.       *    *')
    print ('*    *   0.       *    *')
    print ('***************************')
    print ('***************************')
    #     
    num = input('       ：')
    #   
    num = int(num)
    #          0~5（  5），    
    while num not in range(0, 5):
        num = input('     ，     ：')
        num = int(num)
    #       2.             
    if num == 1:
        add_student()
        while True:

            rs = input('         ？y（  ）/ n(  ):')
            if rs == 'y':
                    #
                add_student()
            else:
                print ('    ！')
                break
        save_data()

    #   
    elif num == 2:
        update_student()
        save_data()

    #   
    elif num == 3:
        query_student()

    #   
    elif num == 4:
        delete_student()
        save_data()

    #   
    else:
        break