CODEWITHSUNDEEP
pythonpython-2.7endianness
skywalkerc
skywalkerc

Reputation: 253

How to convert a string to "04x" hex in little endian format?

When I convert the a string in 04x hex it will be like this,

"".join("{:04x}".format(ord(c)) for c in "USERDOMAIN")
==> 00550053004500520044004f004d00410049004e

However I need it in little endian format? In this example

==> 550053004500520044004f004d00410049004e00

How should I calculate this value (I mean little endian format of USERDOMAIN 04x hex) in python?

Upvotes: 1

Views: 1762

Answers (1)

Martijn Pieters
Martijn Pieters

Reputation: 1124170

If you are trying to encode to UTF16 bytes, just do so:

u'USERDOMAIN'.encode('utf-16-le')

which encodes to UTF-16, little endian, without a Byte Order Mark:

>>> u'USERDOMAIN'.encode('utf-16-le')
'U\x00S\x00E\x00R\x00D\x00O\x00M\x00A\x00I\x00N\x00'
>>> u'USERDOMAIN'.encode('utf-16-le').encode('hex')
'550053004500520044004f004d00410049004e00'

Note that I created a Unicode literal by prefixing the string definition with u. If you have a bytestring from another source, you'll have to decode to Unicode first unless that data is ASCII only.

Upvotes: 1

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