将字节写入文件时出错？

Question

我正在开发一个保存加密密码的 tkinter 项目。我正在写这条路径的关键：

C:\Users\<usrname>\.PassManager\PassManager.key

。

工作正常，突然我不知道发生了什么，我收到了这个错误。在写作时，我提到要将 bytes 写入文件。好像没用啊

理解：

错误：

'bool' object

self.key_path()

不是布尔变量？

这个问题的原因是什么？

错误：

<class 'bytes'>
b'Oy21Nnu_A0f7xFuS-7pnFegt5Dj0ks6n4_ksOPzlYck=' #<-------Writing this key

Traceback (most recent call last):
  File "c:\Users\rohit\Desktop\Password Manager\app.py", line 559, in <module>
    app = App()
          ^^^^^
  File "c:\Users\rohit\Desktop\Password Manager\app.py", line 40, in __init__
    self.b64key = self.key()
                  ^^^^^^^^^^
  File "c:\Users\rohit\Desktop\Password Manager\app.py", line 522, in key
    with open(self.key_path, "wb") as file:
TypeError: 'bool' object does not support the context manager protocol

代码：

class App(CTk):
    def __init__(self):
        super().__init__()
        self.count = True

        self.db_path = self.get_db_path()
        self.key_path = self.get_key_path()

        # Writing up db and key files
        self.dirFile_setup()


        # Secret key
        self.b64key = self.key()

# --------------- Code -------------------------

    def key():
        if path.exists(self.key_path) and stat(self.key_path).st_size == 0:
        key_ = Fernet.generate_key()
        print(type(key_))

        with open(self.key_path, "wb") as file:
            file.write(key_)
            file.close()
        return key_
            
        else:# Opening exist file
            with open(self.key_path, "r") as file:
               return file.readlines()[0]

Answer 1

在Python中将字节写入文件时，重要的是要确保文件以二进制模式打开并且写入的数据是字节格式。 这是如何完成的代码--

file_path = r'C:\Users.PassManager\PassManager.key' data_to_write = b'your_bytes_data_here'

尝试：

with open(file_path, 'wb') as file:
   
    file.write(data_to_write)
    print("Bytes have been successfully written to the file.")

例外情况为 e： print("将字节写入文件时发生错误:", e)