Python-String to Bytes conversion. Double BackSlash issue

问题

I've got a problem. I've this string:

a=O\x8c\x90\x05\xa1\xe2!\xbe

If i use:

c=str.encode(a)

This is the result:

b'O\\x8c\\x90\\x05\\xa1\\xe2!\\xbe'

I need those double backslash to be single backslash and i really need that type of data to be BYTES. I need to return this:

c=b'0\x8c\x90\x05\xa1\xe2!\xbe'

And type(c)==bytes Any idea?

回答1:

You can use str.decode() with encoding as unicode-escape . Then decode it back using the required encoding to get back your bytes array. Example -

c = a.decode('unicode-escape').encode('<required encoding>')

Demo -

>>> a
b'O\\x8c\\x90\\x05\\xa1\\xe2!\\xbe'
>>> c = a.decode('unicode-escape').encode('ISO-8859-1')
>>> c
b'O\x8c\x90\x05\xa1\xe2!\xbe'

来源：https://stackoverflow.com/questions/33257875/python-string-to-bytes-conversion-double-backslash-issue