python student table

import json
import getpass

def menu():
    """
    主功能界面
    :return: 
    """
    print("*"*53)
    print('*' + ' '*51 + '*')
    print('*' + 'Student Manager System'.center(51,' ') + '*')
    print('*' + '1.Log in'.center(51,' ') + '*')
    print('*' + '2.Register'.center(51,' ') + '*')
    print('*' + '0.Exit '.center(51,' ') + '*')
    print('*' + ' ' * 51 + '*')
    print("*" * 53)
    while True:
        option = input('输入选项:')
        if option == '1':
            login()
        elif option == '2':
            register()
        elif option == '0':
            exit()
        the Option == elif '': 
            the Continue 
        the else: 
            Print ( 'input is incorrect, please re-select items!') 

DEF the Login (): 
    "" " 
    user login 
    : return: 
    " "" 
    Print ( '*' + 'Starting the Login '.center (50,' ') +' * ') 
    F1 = Open (' ./ rmyfile / system_info.json ',' R & lt ', encoding =' UTF-. 8 ') 
    RES = f1.read () 
    f1.close () 
    sys_info_list = json.loads (RES) 
    the while True: 
        t_id = iNPUT ( 'enter ID:') 
        t_pwd = getpass.getpass ( 'password:') 
        for n-in Range (len (sys_info_list)): 
            IF sys_info_list [n- ] [ 'id'] == t_id and sys_info_list [n-] [ 'pwd'] == t_pwd: 
                submenu (sys_info_list [n-]) ## returns the user dictionary information
        the else: 
            Print ( 'no such user or user password does not match, please log in again') 



DEF the Register (): 
    "" " 
    User Registration 
    : return: 
    " "" 
    Print ( '*' + 'Starting register'.center (50, '') + '*') 
    F1 = Open ( './ rmyfile / system_info.json', 'R & lt', encoding = 'UTF-. 8') 
    RES = f1.read () 
    f1.close () 
    sys_info_list = JSON. loads (RES) 
    the while True: 
        t_id = iNPUT ( 'enter user id:') 
        for n-in Range (len (sys_info_list)): 
            IF t_id == sys_info_list [n-] [ 'id']: 
                Print ( 'has the user id present '). 
                BREAK 
            elif t_id ==' ':
                print ( 'user id can not be empty.') 
                BREAK
        the else: 
            BREAK 
    t_user the INPUT = ( 'Enter a user name:') 
    the while True: 
        t_pwd = getpass.getpass ( 'password:') 
        t_pwd2 = getpass.getpass ( 'Confirm Password:') 
        ! = IF t_pwd t_pwd2: 
            Print ( ' password inconsistent ') 
        the else: 
            BREAK 

    new_info_dict = {} 
    new_info_dict [' ID '] = t_id 
    new_info_dict [' User '] = T_USER 
    new_info_dict [' pwd '] = t_pwd 
    new_info_dict [' Students. '] = [] 
    sys_info_list.append (new_info_dict) 
    sys_info_json = json.dumps (sys_info_list) # added to complete the conversion list information format json 
    f2 = open ( './ rmyfile / system_info.json', 'w', encoding = 'utf-8')
    f2.write(sys_info_json)
    print ( 'User:% s'% t_id + 'successful registration') 
    f2.close () 

    print ( 'options: continue to register 1 / return a 0') 
    the while True: 
        Option = INPUT ( 'Please input options:' ) 
        IF Option == '. 1': 
            Register () 
        elif Option == '0': 
            MENU () 
        elif Option == '': 
            Continue 
        the else: 
            Print ( '. entered incorrectly, please re-select') 


DEF submenu (teacher_dict : dict): 
    "" " 
    subfunction interface - the user logs 
    : param teacher_dict: 
    : return: 
    " "" 
    Print ( "*" * 53 is) 
    Print ( '*' + ( 'available for purchase to you -% S'% teacher_dict [ 'user']). center ( 50,' ')  + '*')
    print('*' + '1.Add student'.center(50, ' ') + '*')
    print('*' + '2.Edit student'.center(50, ' ') + '*')
    print('*' + '3.Query student'.center(50, ' ') + '*')
    print('*' + '4.Delete student'.center(50, ' ') + '*')
    print('*' + '5.Return menu'.center(50, ' ') + '*')
    print('*' + '0.Exit'.center(50, ' ') + '*')
    print("*" * 53)
    while True:
        option = input('输入选项:')
        if option == '1':
            add_student(teacher_dict)
        elif option == '2':
            edit_student(teacher_dict)
        elif option == '3':
            query_student(teacher_dict)
        elif option == '4':
            delete_student(teacher_dict)
        elif option == '5':
            the MENU () 
        elif the Option == '0': 
            Exit () 
        elif the Option == '': 
            the Continue 
        the else: 
            Print ( 'input is incorrect, please re-select items!') 

DEF add_student (teacher_dict: dict): 
    Print ( ' * '+' Adding student'.center (50, '') + '*') 
    F1 = Open ( './ rmyfile / system_info.json', 'R & lt', encoding = 'UTF-. 8') 
    RES = F1. Read () 
    f1.close () 
    sys_info_list = json.loads (RES) # convert text into a format python json format, here List 
    stu_name = iNPUT ( 'enter a student name:') 
    the while True: 
        stu_id = iNPUT ( 'enter the student number:') 
        IF stu_id == '':
            Continue 
        for n-in Range (len (teacher_dict [ 'Students.'])): # student number must not be the same
            == teacher_dict stu_id IF [ 'Students.'] [n-] [ 'stuid']: 
                Print ( '. student number is occupied, reset') 
                break 
        the else: # Note that if the above cycle ends break, is not performed else the 
            BREAK 

    Age = iNPUT ( 'input Age:') 
    phone = iNPUT ( 'enter phone number:') 
    student_dcit = { 'stuname': stu_name, 'stuid': stu_id, 'Age': Age, 'phone': phone } # generates new student dictionary 
    t_index = sys_info_list.index (teacher_dict) # teacher system dictionary information in the index information list 
    sys_info_list [t_index] [ 'students' ]. append (student_dcit) # students to add new system information list 
    sys_info_json = json .dumps (sys_info_list) 
    F2 = Open ( './ rmyfile / system_info.json', 'W', encoding = 'UTF-. 8') 
    f2.write (sys_info_json) 
    F2.use Close () 
    Print ( 'add students (% s) successfully. \ n'% stu_name)
    print ( 'options: continue to add 1 / return a 0') 
    the while True: 
        Option = INPUT ( 'Please input options:') 
        IF Option == '1': 
            add_student (sys_info_list [t_index]) 
        elif Option == ' 0 ': 
            submenu (sys_info_list [t_index]) 
        elif Option ==' ': 
            Continue 
        the else: 
            Print (' input is incorrect, please re-select \ n-. ') 
DEF edit_student (teacher_dict: dict): 
    Print (' * '+' student'.center Editing (50, '') + '*') 
    print ( 'you all student information as follows:') 
    for the n-in the Range (len (teacher_dict [ 'students'])): # print all students to 
        print ( teacher_dict [ 'Students.'] [n-]) 

    F1 = Open ( './rmyfile/system_info.json', 'r', encoding='utf-8')
    res = f1.read()
    f1.close () 
    sys_info_list = json.loads (RES) # convert text python json format to format, here List 
    t_index = sys_info_list.index (teacher_dict) # teachers dictionary information system information in the index list 
    while True : 
        edit_id the iNPUT = ( 'enter need to modify student id:') # first do not enter the student id case 
        Mark = 0 
        IF edit_id == '': 
            the Continue 
        for the n-in the Range (len (teacher_dict [ 'students' ])): 
            IF teacher_dict [ 'students'] [the n-] [ 'stuid'] == edit_id: # find matching students 
                edit_name = input ( 'change the name:') 
                edit_age the INPUT = ( 'modify Age:') 
                edit_phone = input ( 'modify a phone number:') 
                teacher_dict [ 'Students.'] [n-] [ 'stuname'] = edit_name
                teacher_dict [ 'Students.'] [n-] [ 'Age'] = edit_age 
                teacher_dict [ 'Students.'] [n-] [ 'Phone'] = edit_phone 
                sys_info_list [t_index] [ 'Students.'] [n-] = teacher_dict [ 'Students.' ] [n] .copy () # modify the dictionary corresponding student 
                Mark. 1 = 
                sys_info_json = json.dumps (sys_info_list) 
                F2 = Open ( './ rmyfile / system_info.json', 'W', encoding = 'UTF-. 8 ') 
                f2.write (sys_info_json) 
                f2.close () 
                Print (' modify student information successfully \ the n-. ') 
                BREAK 
        IF not Mark: 
            Print (' students to be modified does not exist (% s) \ n '% edit_id). 
        BREAK 
    Print ( 'Options: 1 continue to modify / return to the previous 0 ') 
    the while True:
        option = input ( 'Enter option:') 
        IF Option == '. 1': 
            edit_student (sys_info_list [t_index]) 
        elif Option == '0': 
            submenu (sys_info_list [t_index]) 
        elif Option == '': 
            Continue 
        the else : 
            Print ( 'input is incorrect, please re-select.') 

DEF delete_student (teacher_dict: dict): 
    Print ( '*' + 'the Deleting student'.center (50,' ') +' * ') 
    Print (' your All students information is as follows: ') 
    for n-in Range (len (teacher_dict [' students. '])): # print all students 
        Print (teacher_dict [' students. '] [n-]) 
    F1 = Open (' ./ rmyfile / system_info. json ',' r ', encoding =' utf-8 ')
    res = f1.read()
    f1.close()
    sys_info_list = json.loads (res) # convert text python json format to format, here List 
    t_index = sys_info_list.index (teacher_dict) # teachers dictionary information system information in the index list of 
    the while True: 
        del_id the INPUT = ( 'enter the need to remove the student id:') # first do not enter the student id case 
        Mark = 0 
        IF del_id == '': 
            the Continue 
        for the n-in the Range (len (teacher_dict [ 'students'])): 
            IF teacher_dict [ 'students'] [n ] [ 'stuid'] == del_id: # find a matching student ID 
                . sys_info_list [t_index] [ 'students.'] POP (n-) # delete the corresponding student dictionary 
                sys_info_json = json.dumps ( sys_info_list) 
                F2 = Open ( './ rmyfile / system_info.json', 'W', encoding = 'UTF-. 8') 
                F2.write(sys_info_json)
                f2.close()
                print ( 'remove students (% s) successfully \ the n-.'% del_id) 
                Mark = 1 
                BREAK 
        IF not Mark: # Without this student to prompt 
            print ( 'no id (% s) students \ n'% del_id ) 
        BREAK 
    Print ( 'options: continue to remove 1 / return to previous 0') 
    the while True: 
        the option = the iNPUT ( 'Please input options:') 
        IF the option == '1': 
            delete_student (sys_info_list [t_index]) 
        elif the option = = '0': 
            submenu (sys_info_list [t_index]) 
        elif Option == '': 
            Continue 
        the else: 
            Print ( 'input is incorrect, please re-selection.') 


DEF query_student (teacher_dict: dict): 
    Print ( '*' + 'Querying student'.center(51, ' ') + '*')
    Print ( '*' + '' + 51 is * '*') 
    Print ( '*' + '1.Query by Student name'.center (51 is,' ') +' * ') 
    Print (' * '+' 2 by Student id'.center .query (51 is, '') + '*') 
    Print ( '*' + '3.Query by age'.center (51 is,' ') +' * ') 
    the while True: 
        Option = input ( 'enter the options:') 
        IF the option == '1': 
            query_student_name (teacher_dict) 
        elif the option == '2': 
            query_student_id (teacher_dict) 
        elif the option == '': 
            the Continue 
        the else: 
            Print ( 'a mistake, Please re-select '). 

DEF query_student_name (teacher_dict: dict):
    Print ( '*' + 'Querying by name'.center (51,' ') +' * ') 
    (' Enter the student's name to be queried: ') query_name = input
    COUNT = 0 
    for n-in Range (len (teacher_dict [ 'Students.'])): 
        IF QUERY_NAME in teacher_dict [ 'Students.'] [n-] [ 'stuname']: 
            COUNT + =. 1 
            Print (teacher_dict [ 'Students.'] [ the n-]) 
    Print ( "% d in total for you to find records \ the n-'% COUNT) 
    Print (' option: to research 1 / return to previous 0 ') 
    the while True: 
        the option = the iNPUT (' Please input options: ') 
        Option == IF '. 1': 
            query_student (teacher_dict) 
        elif Option == '0': 
            submenu (teacher_dict) 
        elif Option == '': 
            Continue 
        the else: 
            Print ( '. entered incorrectly, please re-select') 


DEF query_student_id ( teacher_dict: dict):
    Print ( '*' + 'Querying by id'.center (51 is,' ') +' * ') 
    (' need, student number of inputs: ') = query_id INPUT 
    COUNT = 0 
    for n-in Range (len (teacher_dict [ 'Students'])): 
        IF query_id == teacher_dict [' Students'] [the n-] [ 'stuid']: 
            COUNT = 1 + 
            Print (teacher_dict [ 'Students'] [the n-]) 
    Print (' in total for you to find records% d \ n-'COUNT%) 
    Print (' options: 1 to research / return a 0 ') 
    the while True: 
        option = iNPUT (' Please input options: ') 
        IF option ==' 1 ': 
            query_student ( teacher_dict) 
        elif Option == '0': 
            submenu (teacher_dict) 
        the else: 
            Print ( 'Entered incorrectly, please re-select '). 

IF __name__ ==' __main__ ': 
    the MENU (