Question

我使用Python创建了一个程序，它本质上是一个计算术语的字典。该程序使用户能够使用各自的定义添加自己的术语，程序将保存它，但仅限于该会话，使用户无用。

如何使程序保存用户的术语和定义，以便在程序关闭时不会丢失？老实说，我不知道该怎么做。这只是一个CLI程序，我没有把它变成可执行文件，如果这对你有帮助的话。

terms = {"ALU":"Arithmetic Logic Unit", "CPU":"Central Processing Unit", "GPU":"Graphics Processing Unit"}
def print_menu():
    print('Computing Terms')
    print()
    print('0. Quit')
    print('1. Look Up a Term')
    print('2. Add a Term')
    print('3. Redefine a Term')
    print('4. Delete a Term')
    print('5. Display All Terms')

while True:
    print_menu()
    print()
    choice = int(input('Choice: '))
    if choice == 0:
        break
    elif choice == 1:
        print('\n')
        term = input('Type in a term you wish to see: ')
        if term in terms:
            definition = terms[term]
            print('\n')
            print(term, '-', definition, '\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
        else:
            print('This term does not exist. Try adding it instead.\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
    elif choice == 2:
        print('\n')
        term = input('What term would you like to add?: ')
        if term not in terms:
            print('\n')
            definition = input('What\'s the definition?: ')
            terms[term] = definition
            print('\n')
            print(term, 'has been added.\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
        else:
            print('\n')
            print('Term already exists, try redefining it instead.\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
    elif choice == 3:
        print('\n')
        term = input('Which term do you want to redefine?: ')
        if term in terms:
            definition = input('What\'s the new definition?: ')
            terms[term] = definition
            print('\n')
            print(term, 'has been redefined.\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
        else:
            print('\n')
            print('That term doesn\'t exist, try adding it instead.')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
    elif choice == 4:
        print('\n')
        term = input('Which term would you like to delete?: ')
        if term in terms:
            del terms[term]
            print('\n')
            print('The term has been deleted.\n')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
        else:
            print('\n')
            print('This term doesn\'t exist.')
            print()
            print('----------------------------------------------------------------')
            print()
            print()
    elif choice == 5:
        print('\n')
        print('The terms available are: ')
        for term in terms:
            print(term)
        print()
        print()
        print('----------------------------------------------------------------')
        print()
        print()
    else:
        print('\n')
        print('Sorry, but ', choice, ' is not a valid choice.\n')
        print()
        print('----------------------------------------------------------------')
        print()
        print()

Answer 1

查看 pickle 模块，该模块提供了一种（de）将数据结构（在您的情况下为dict）序列化为可在需要时加载/转储的文件的方法。 p>

https://wiki.python.org/moin/UsingPickle

Python：保存用户的会话

1 个答案: