Question

我想创建一个函数user_dialogue（），要求输入两个文件的名称。该函数需要处理诸如IOError之类的错误。然后，这两个文件应通过我创建的另一个函数（称为加密函数）运行。

程序应该像这样工作：

新加密文件的名称：out_file.txt

要加密的文件名：blah.txt

导致错误！请重试。

要加密的文件名：我的file.csv

加密已完成！

到目前为止，这是我的代码：

ImportError: No module named openpyxl

user_dialogue（）

这是我的函数crypto_file：

def user_dialogue():
    file1 = open(input("New name of file: "), 'w')

    done = False

    while not done:
        try:
            file2 = open(input("Name of file that you want to encrypt: "), 'r')
        except IOError as error:
        print("File doesn't exist! The error is of the type: ", error)
        else:

        file2.close()

        done = True

    encrypt_file(file2,file1)

由于某种原因，该代码无法正常工作！有什么帮助吗？

Answer 1

使用上下文管理器with：

def user_dialogue():
    try:
        with open(input("Name of file that you want to encrypt: "), 'r') as file2:
            try:
                with open(input("New name of file(encrypted): "), 'w') as file1:
                    encrypt_file(file2, file1)
            except IOError as e3:
                print('No access')

    except FileNotFoundError as e1:
        print('No such file')
    except IOError as e2:
        print('No access')



def encrypt_file(in_file, out_file):
    fileread = in_file.read()
    encryptedfile = text_encryption_function.encrypt(fileread)

    out_file.write(encryptedfile)

使用try / except：

def user_dialogue():
    try:
        file2 = open(input("Name of file that you want to encrypt: "), 'r')
        try:
            file1 = open(input("New name of file(encrypted): "), 'w')
            encrypt_file(file2, file1)
        except IOError as e3:
            print('No access')
        else:
            file1.close()

    except FileNotFoundError as e1:
        print('No such file')
    except IOError as e2:
        print('No access')
    else:
        file2.close()



def encrypt_file(in_file, out_file):
    fileread = in_file.read()
    encryptedfile = text_encryption_function.encrypt(fileread)

    out_file.write(encryptedfile)

创建新文件的功能

1 个答案: