Python将字节字符串写入文件 [英] Python write string of bytes to file

问题描述

如何使用python在字节模式下将字节字符串写入文件？

How do I write a string of bytes to a file, in byte mode, using python?

我有：

['0x28', '0x0', '0x0', '0x0']

如何将0x28、0x0、0x0、0x0写入文件？我不知道如何将该字符串转换为有效字节并将其写入。

How do I write 0x28, 0x0, 0x0, 0x0 to a file? I don't know how to transform this string to a valid byte and write it.

推荐答案

映射到 bytearray（）或 bytes（）对象，然后将其写入文件：

Map to a bytearray() or bytes() object, then write that to the file:

with open(outputfilename, 'wb') as output:
    output.write(bytearray(int(i, 16) for i in yoursequence))

另一种选择是使用 binascii.unhexlify（）函数将十六进制字符串转换为字节值：

Another option is to use the binascii.unhexlify() function to turn your hex strings into a bytes value:

from binascii import unhexlify

with open(outputfilename, 'wb') as output:
    output.write(unhexlify(''.join(format(i[2:], '>02s') for i in b)))

在这里，我们必须先切除 0x 部分，然后重新格式化用零填充它的值，然后将整个值连成一个字符串。

Here we have to chop off the 0x part first, then reformat the value to pad it with zeros and join the whole into one string.

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