python入門の図書管理システムの作成

#       ，        。       ，                   
member = [{"name": "root", "pwd": "python"}]
account = {}
#       ，       
book_list = []
#       ，                     
book_id_list = []
#       ，                     
book_name_list = []


#     
def login_menu():
    while True:
        print("="*50)
        print("          ！")
        print("【1】    【2】  ")
        login_request = input("       ：")
        if login_request in ["1", "2"]:
            if login_request == "1":
                register()
            if login_request == "2":
                login()
                break
        else:
            print("    ，     ！")


#   
def register():
    print("="*50)
    print("        ")
    register_name = input("      ：")
    for test_name in member:
        if register_name in test_name["name"]:
            print("     ！")
            break
        register_pwd = input("     ：")
        if len(register_name) == 0 or len(register_pwd) == 0:
            print("          ！")
        else:
            account["name"] = register_name
            account["pwd"] = register_pwd
            member.append(account)
            print("    !")
            break


#   
def login():
    while True:
        print("="*50)
        print("        ！")
        login_name = input("      ：")
        login_pwd = input("     ：")
        if login_name == account["name"]and login_pwd == account["pwd"]:
            print("    ！")
            return

        else:
            print("       ，     ！")


#    
def show_menu():
    while True:
        print("="*50)
        print("          ！")
        print("【1】     【2】       【3】     【4】     【5】     【6】    ")
        show_request = input("     ：")
        if show_request == "1":
            add_book()
        elif show_request == "2":
            all_book()
        elif show_request == "3":
            update_book()
        elif show_request == "4":
            find_book()
        elif show_request == "5":
            del_book()
        elif show_request == "6":
            print("         ！")
            break
        else:
            print("    ，     ！")


#     
def add_book():
    print("="*50)
    print("          ！")
    book = {}
    add_id = input("       ：")
    #            
    if add_id not in book_id_list:
        add_name = input("       ：")
        add_location = input("         ：")
        book["id"] = add_id
        book_id_list.append(add_id)
        book["name"] = add_name
        book_name_list.append(add_name)
        book["location"] = add_location
        book_list.append(book)
        print("      ！")
        print()
    else:
        print("  %s   ！" % add_id)


#     
def all_book():
    print("="*50)
    print("      ")
    print()
    for show_book in book_list:
        print("    ：%s
    ：%s
    ：%s" % (show_book["id"], show_book["name"], show_book["location"]))
        print()


#     
def update_book():
    print("="*50)
    print("          ！")
    update_id = input("       ：")
    #             
    if update_id in book_id_list:
        for up_book in book_list:
            if up_book["id"] == update_id:
                up_location = input("      ：")
                up_book["location"] = up_location
                print("    ！")

    #               
    else:
        print("       ！")


#     ，         ，            (    )
def find_book():
    print("="*50)
    print("          ！")
    #             
    fd_book_list = []
    while True:
        fd_name = input("       ，      N：")
        #       
        if fd_name == "N":
            break
        #         ，     
        if fd_name in book_name_list:
            print("    ")
            for fd_book in book_list:
                if fd_book["name"] == fd_name:
                    fd_book_list.append(fd_book)
                    book_id_list.append(fd_book["id"])
                    print("    %s
    ：%s
    ：%s" % (fd_book["id"], fd_book["name"], fd_book["location"]))
                    print()
        #              ，           
        else:
            print("  【%s】   " % fd_name)
            continue

        #                  ，      
        while True:
            fd_new_id = input("          ，      N：")
            if fd_new_id == "N":
                break
            #          ，     
            if fd_new_id in book_id_list:
                print("    ")
                for fd_new_book in fd_book_list:
                    if fd_new_id == fd_new_book["id"]:
                        print("    ：%s
    ：%s
    ：%s" %
                              (fd_new_book["id"], fd_new_book["name"], fd_new_book["location"]))
                        print()
            #             
            else:
                print("    【%s】   " % fd_new_id)
                #           
                break


#     
def del_book():
    print("=" * 50)
    print("          ！")
    del_id = input("       ：")
    if del_id in book_id_list:
        for de_book in book_list:
            if de_book["id"] == del_id:
                book_list.remove(de_book)
                print("    ！")

    #               
    else:
        print("       ！")


#    
def main():
    login_menu()
    show_menu()


if __name__ == '__main__':
    main()