Re: Creating a 2s compliment hex string for negitive numbers

On Friday, August 1, 2014 4:47:20 PM UTC-4, MRAB wrote: > On 2014-08-01 21:35, bSneddon wrote: > > > I need to calculate an error correction code for an old protocol. > > > > > > I calculate the integer 4617 and want to code the 2s compliment in ASCII > > > hex EDF7. When issue the following.

Re: Creating a 2s compliment hex string for negitive numbers

On 2014-08-01 21:35, bSneddon wrote: I need to calculate an error correction code for an old protocol. I calculate the integer 4617 and want to code the 2s compliment in ASCII hex EDF7. When issue the following. hex(-4617) '-0x1209' Does anyone know a clean way to get to the desired results?

Creating a 2s compliment hex string for negitive numbers

I need to calculate an error correction code for an old protocol. I calculate the integer 4617 and want to code the 2s compliment in ASCII hex EDF7. When issue the following. >>> hex(-4617) '-0x1209' Does anyone know a clean way to get to the desired results? My ECC will always be 16 bit (4

Re: Integer as raw hex string?

On 2012-12-24 15:58, Tim Chase wrote: On 12/24/12 09:36, Roy Smith wrote: I have an integer that I want to encode as a hex string, but I don't want "0x" at the beginning, nor do I want "L" at the end if it happened to be a long. The result needs to be something I can

Re: Integer as raw hex string?

In article , Tim Chase wrote: > On 12/24/12 09:36, Roy Smith wrote: > > I have an integer that I want to encode as a hex string, but I don't > > want "0x" at the beginning, nor do I want "L" at the end if it happened > > to be a long. The result

Re: Integer as raw hex string?

On 12/24/12 09:36, Roy Smith wrote: > I have an integer that I want to encode as a hex string, but I don't > want "0x" at the beginning, nor do I want "L" at the end if it happened > to be a long. The result needs to be something I can pass to int(h, 16)

Integer as raw hex string?

I have an integer that I want to encode as a hex string, but I don't want "0x" at the beginning, nor do I want "L" at the end if it happened to be a long. The result needs to be something I can pass to int(h, 16) to get back my original integer. The brute force

Re: Hex String

Anthony Cole wrote: How can I concatenate 2 hex strings (e.g. '\x16' and '\xb9') then convert the answer to an integer? When I try i always end up with the ASCII equivalent! Those are just bytestrings (assuming you're using Python 2.x), ie strings using 1 byte per character. You can convert a

Re: Hex String

On Mon, May 10, 2010 at 12:55 PM, Anthony Cole wrote: > How can I concatenate 2 hex strings (e.g. '\x16' and '\xb9') then convert > the answer to an integer? > > When I try i always end up with the ASCII equivalent! I think you want the `struct` module: struct — Interpret strings as packed binary

Hex String

How can I concatenate 2 hex strings (e.g. '\x16' and '\xb9') then convert the answer to an integer? When I try i always end up with the ASCII equivalent! Thanks, Anthony -- http://mail.python.org/mailman/listinfo/python-list

Re: Concise way to format list/array to custom(hex) string

On Aug 2, 9:29 am, Grant Edwards <[EMAIL PROTECTED]> wrote: > On 2008-08-02, Zoltán Nagy <[EMAIL PROTECTED]> wrote: > > > > > > > Kurien Mathew írta: > >> Hello, > > >> What will be a concise & efficient way to convert a list/array.a

Re: Concise way to format list/array to custom(hex) string

On 2008-08-02, Zoltán Nagy <[EMAIL PROTECTED]> wrote: > Kurien Mathew írta: >> Hello, >> >> What will be a concise & efficient way to convert a list/array.array of >> n elements into a hex string? For e.g. given the bytes >> [116, 111, 110, 103, 10

Re: Concise way to format list/array to custom(hex) string

Kurien Mathew írta: > Hello, > > What will be a concise & efficient way to convert a list/array.array of > n elements into a hex string? For e.g. given the bytes > [116, 111, 110, 103, 107, 97] > I would like the formatted string > 0x74 0x6f 0x6e 0x67 0x6b 0x61 > &

Re: Concise way to format list/array to custom(hex) string

On Aug 2, 9:53 pm, Kurien Mathew <[EMAIL PROTECTED]> wrote: > Hello, > > What will be a concise & efficient way to convert a list/array.array of > n elements into a hex string? For e.g. given the bytes > [116, 111, 110, 103, 107, 97] > I would like the formatted strin

Concise way to format list/array to custom(hex) string

Hello, What will be a concise & efficient way to convert a list/array.array of n elements into a hex string? For e.g. given the bytes [116, 111, 110, 103, 107, 97] I would like the formatted string 0x74 0x6f 0x6e 0x67 0x6b 0x61 Is there an approach better than below: hex = ''

Re: char string 2 hex string

On Jan 31, 7:09 pm, Paul Rubin wrote: > Antonio Chay <[EMAIL PROTECTED]> writes: > > "AAA" should be "414141" > > 'AAA'.encode('hex') 8-O Cool stuff! Thanks! -- http://mail.python.org/mailman/listinfo/python-list

Re: char string 2 hex string

You could also do: "".join(['%02x' % ord(c) for c in 'AAA']) On 31 Jan 2008, at 14:09, Paul Rubin wrote: Antonio Chay <[EMAIL PROTECTED]> writes: "AAA" should be "414141" 'AAA'.encode('hex') -- http://mail.python.org/mailman/listinfo/python-list On 31 Jan 2008, at 14:05, Antonio Chay wrot

Re: char string 2 hex string

Antonio Chay <[EMAIL PROTECTED]> writes: > "AAA" should be "414141" 'AAA'.encode('hex') -- http://mail.python.org/mailman/listinfo/python-list

char string 2 hex string

Hello! I need to transform a string from a file into a hexadecimal representation, for example: "AAA" should be "414141" With perl I do this with: unpack("H*","AAA") And with python I got this: "".join([str(hex(ord(x)))[2:] for x in "AAA"]) But seems a little "weird" for me. Is there anothe

Re: Converting binary sid's to a hex string

an in > > turn use to query an exchange 55 database. I believe I need to convert a > > binary sid to a hex string. ADsSID com object will do this for me however it > > is a little slow. Can anybody point me in the right direction to converting > > a PySID to a hexstring

Re: Converting binary sid's to a hex string

; turn use to query an exchange 55 database. I believe I need to convert a > binary sid to a hex string. ADsSID com object will do this for me however it > is a little slow. Can anybody point me in the right direction to converting > a PySID to a hexstring. > Thx > > impor

Converting binary sid's to a hex string

I am trying to create a hexstring of a NT4 user account sid which I can in turn use to query an exchange 55 database. I believe I need to convert a binary sid to a hex string. ADsSID com object will do this for me however it is a little slow. Can anybody point me in the right direction to

Re: hex string to hex value

Fredrik Lundh wrote: > [EMAIL PROTECTED] wrote: > > > Fredrik Lundh's solution works if the hex string starts with "0x" > > that's what "interpret [it] as a Python literal" meant. I know from personal experience that the implications of that someti

Re: hex string to hex value

[EMAIL PROTECTED] wrote: > Fredrik Lundh's solution works if the hex string starts with "0x" that's what "interpret [it] as a Python literal" meant. > (which it will when the string is created with the hex function). > > >>> int(hex(m),0) >

Re: hex string to hex value

On 2005-11-23, tim <[EMAIL PROTECTED]> wrote: >>>>>int(hex(m),16) >>>>> >>>>> >>66 >> >>Fredrik Lundh's solution works if the hex string starts with "0x" >>(which it will when the string is creat

Re: [Fwd: Re: hex string to hex value]

Brett g Porter wrote: > tim wrote: > >> >> I end up with 66 again, back where I started, a decimal, right? >> I want to end up with 0x42 as being a hex value, not a string, so i >> can pas it as an argument to a function that needs a hex value. >> (i am trying to replace the 0x42 in the line >>

Re: [Fwd: Re: hex string to hex value]

tim wrote: > > I end up with 66 again, back where I started, a decimal, right? > I want to end up with 0x42 as being a hex value, not a string, so i can > pas it as an argument to a function that needs a hex value. > (i am trying to replace the 0x42 in the line midi.note_off(channel=0, > note=0

Re: [Fwd: Re: hex string to hex value]

tim wrote: > ok, but if i do > > >>> n=66 > >>> m=hex(n) > >>> m > '0x42' > >>> h=int(m,16) > >>> h > 66 > >>> > > I end up with 66 again, back where I started, a decimal, right? > I want to end up with 0x42 as being a hex value, not a string, so i can > pas it as an argument to a function

Re: hex string to hex value

42 >> >>> >> >>what am I missing here ? >> >> > >Avnit's solution was wrong. When converting a string, you >must state what base you are converting from. > > > >>>>int(hex(m),16) >>>> >>>> >

Re: hex string to hex value

solution was wrong. When converting a string, you must state what base you are converting from. >>> int(hex(m),16) 66 Fredrik Lundh's solution works if the hex string starts with "0x" (which it will when the string is created with the hex function). >>> int(hex(m

[Fwd: Re: hex string to hex value]

ok, but if i do >>> n=66 >>> m=hex(n) >>> m '0x42' >>> h=int(m,16) >>> h 66 >>> I end up with 66 again, back where I started, a decimal, right? I want to end up with 0x42 as being a hex value, not a string, so i can pas it as an argument to a function that needs a hex value. (i am trying t

Re: hex string to hex value

avnit wrote: > If you just want to convert a string to an integer, it would be: > > >>> int(n) That's what the OP tried and it didn't work. BECAUSE you have to tell the int function what base the string is in (even though it has "0x" at the start). >>> int(n,16) 66 > > in your case it would be

Re: hex string to hex value

but then i get : >>> m 66 >>> n=int(hex(m)) Traceback (most recent call last): File "", line 1, in ? ValueError: invalid literal for int(): 0x42 >>> what am I missing here ? thank you Tim avnit wrote: >If you just want to convert a string to an integer, it would be: > > > int(n)

Re: hex string to hex value

"tim" <[EMAIL PROTECTED]> wrote: > This is probably another newbie question...but... > even after reading quite some messages like '..hex to decimal', > 'creating a hex value' , I can't figure this out: > If i do > >>> m=66 > >>> n=hex(m) > >>> n > '0x42' > i cannot use n as value for a variable t

Re: hex string to hex value

If you just want to convert a string to an integer, it would be: >>> int(n) in your case it would be: >>> m=66 >>> n=int(hex(m)) -- http://mail.python.org/mailman/listinfo/python-list

hex string to hex value

This is probably another newbie question...but... even after reading quite some messages like '..hex to decimal', 'creating a hex value' , I can't figure this out: If i do >>> m=66 >>> n=hex(m) >>> n '0x42' i cannot use n as value for a variable that takes hex values, because it throws: error

Re: hex string into binary format?

"Tertius Cronje" <[EMAIL PROTECTED]> wrote: > >How do I get a hexvalued string to a format recognized for binary >calculation? You're going to be embarrassed. >import binascii >s1 = '1C46BE3D9F6AA820' >s2 = '8667B5236D89CD46' > >i1 = binascii.unhexlify(s1) >i2 = binascii.unhexlify(s2) >x = i1 ^i2

Re: hex string into binary format?

Tertius Cronje wrote: How do I get a hexvalued string to a format recognized for binary calculation? import binascii s1 = '1C46BE3D9F6AA820' s2 = '8667B5236D89CD46' i1 = binascii.unhexlify(s1) i2 = binascii.unhexlify(s2) Try this instead: i1 = long(s1, 16) i2 = long(s2, 16) x = i1 ^i2 -- http://mai

hex string into binary format?

Hi, How do I get a hexvalued string to a format recognized for binary calculation? import binascii s1 = '1C46BE3D9F6AA820' s2 = '8667B5236D89CD46' i1 = binascii.unhexlify(s1) i2 = binascii.unhexlify(s2) x = i1 ^i2 TypeError: unsupported operand type(s) for ^: 'str' and 'str' Many TIA

Re: Help need with converting Hex string to IEEE format float

Max M <[EMAIL PROTECTED]> wrote in news:41bf121e$0$280 [EMAIL PROTECTED]: > > ## > st = '80 00 00 00' > > import binascii > import struct > > s = ''.join([binascii.a2b_hex(s) for s in st.split()]) > v = struct.unpack("f", s)[0] > print v > ## This one worked great for what I was trying to do.

Re: Help need with converting Hex string to IEEE format float

<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > One example I tried was: > > wibble = struct.unpack("f", struct.pack("l", long(conv_str, 16))) > OverflowError: long int too large to convert to int You can't fit 0x8000L into a signed 32-bit integer, use 'L' for an unsigned one.

Re: Help need with converting Hex string to IEEE format float

Christos TZOTZIOY Georgiou wrote: s = "".join(x).decode("hex") I am not sure I remember in which version of Python the hex codec was added, but it is handy. Of course, binascii could do this since 2.0 or so, but not having to import another module *is* nice: >>> 'ff12'.decode('hex') '\xff\x12' >>>

Re: Help need with converting Hex string to IEEE format float

On Tue, 14 Dec 2004 16:57:02 +0100, rumours say that "Fredrik Lundh" <[EMAIL PROTECTED]> might have written: >how about: > ># convert to byte string >import struct >s = "".join([chr(int(c, 16)) for c in x]) >v = struct.unpack("!f", s) I think that the third line in the snippet abo

Re: Help need with converting Hex string to IEEE format float

># convert to byte string, via the array module >import array, struct >a = array.array("B", [int(c, 16) for c in x]) >v = struct.unpack("!f", ) eh? should be: # convert to byte string, via the array module import array, struct a = array.array("B", [int(c, 16) for c in

Re: Help need with converting Hex string to IEEE format float

Max M wrote: > Oh, programmers loves this kind stuff. You should get tons of answers. data = '80 00 00 00' import Image v = Image.fromstring("F", (1, 1), data, "hex", "F;32BF").getpixel((0, 0)) -- http://mail.python.org/mailman/listinfo/python-list

Re: Help need with converting Hex string to IEEE format float

[EMAIL PROTECTED] wrote: Each of these numbers is a Hex byte making up a four byte (32 bit Big-Endian) IEEE float. I have read this data into Python using readlines and then line.split(). This gives me: ['80', '00', '00', '00'] Oh, programmers loves this kind stuff. You should get tons of answers.

Re: Help need with converting Hex string to IEEE format float

<[EMAIL PROTECTED]> wrote: > Newbie Python programmer here, so please be patient. I have spent all > day googling for an answer to my problem, but everything I try fails to > work (or works from the Interpreter with a set value but not from my > code with dynamic values). > > Okay, here is the gen

Help need with converting Hex string to IEEE format float

Hi all, Newbie Python programmer here, so please be patient. I have spent all day googling for an answer to my problem, but everything I try fails to work (or works from the Interpreter with a set value but not from my code with dynamic values). Okay, here is the general gist of the problem. I am