Python:将文本文件转换为二进制文件 [英] Python: Converting a Text File to a Binary File

问题描述

我们可以将任何数字文件转换为二进制文件.

We can convert any digital file into binary file.

我有一个1MB的文本文件，

I have a text file of 1MB,

我想将其转换为二进制字符串，并以二进制数字形式查看输出，反之亦然，

I want to convert it to a binary string and see the output as a binary number and the vice versa,

换句话说，如果我有二进制数，我想将其转换为文本文件.

如何在Python中做到这一点?有没有标准的方法可以做到这一点?

How could I do that in Python? is there a standard way to do this?

该论坛现在有一些帖子( 1， 2 4 )，但没有一个人能正确回答我的问题.

Now in this forum there are some posts (1,2,3, 4 ) on this but none of them answer properly to my question.

推荐答案

请参见

See https://docs.python.org/3/library/codecs.html#standard-encodings for a list of standard string encodings, because the conversion depends on the encoding.

这些功能将有助于在字节/整数和字符串之间进行转换，默认为UTF-8.

These functions will help to convert between bytes/ints and strings, defaulting to UTF-8.

提供的示例在UTF-8中使用韩文字符한".

The example provided uses the Hangul character "한" in UTF-8.

def bytes_to_string(byte_or_int_value, encoding='utf-8') -> str:
    if isinstance(byte_or_int_value, bytes):
        return byte_or_int_value.decode(encoding)
    if isinstance(byte_or_int_value, int):
        return chr(byte_or_int_value).encode(encoding).decode(encoding)
    else: 
        raise ValueError('Error: Input must be a bytes or int type')

def string_to_bytes(string_value, encoding='utf-8') -> bytes:
    if isinstance(string_value, str):
        return bytes(string_value.encode(encoding))
    else: 
        raise ValueError('Error: Input must be a string type')

int_value = 54620
bytes_value = b'\xED\x95\x9C'
string_value = '한'

assert bytes_to_string(int_value) == string_value
assert bytes_to_string(bytes_value) == string_value
assert string_to_bytes(string_value) == bytes_value

这篇关于Python:将文本文件转换为二进制文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！