Re: [Tutor] str format conversion help
thanks,
def conv_tst(bytes)
return ('-'.join([binascii.hexlify(v) for v in bytes]))
i ended up experimenting with the suggestions and the above returns what i'm
looking for, i.e., the formatted mac addr to store in a sqlite db.
i'm sure there are other ways, though the above is working now.
mucho gracias all
use de fucntion encode. For example:
'\x7e\x00\x20'.encode('hex') will return that = '7e0020'
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Re: [Tutor] str format conversion help
print [%s] % ('-'.join([hex(v) for v in theValue]) )
Oops, that leaves 0x at the front of each byte.
You could strip that off with
print [%s] % ('-'.join([hex(v)[2:] for v in theValue]) )
Sorry,
Alan G.
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Re: [Tutor] str format conversion help
yep, i noticed. ;^)
no prob, through your help, it is working the way i needed.
thanks
print [%s] % ('-'.join([hex(v) for v in theValue]) )
Oops, that leaves 0x at the front of each byte.
You could strip that off with
print [%s] % ('-'.join([hex(v)[2:] for v in theValue]) )
Sorry,
Alan G.
--
Best regards,
eMyListsDDgmailto:emylists...@gmail.com
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Re: [Tutor] str format conversion help
On 14-Jul-10 11:35, eMyListsDDg wrote: '\x00\x11\xb2\x00@,O\xa4' the above str is being returned from one key/value pair in a dictionary. it is the addr of a network device. i want to store the addr's in their 8byte mac format like this, [00 11 b2 00 40 2C 4F A4] the combinations of format strings using the print statement hasn't resulted in what i need. A few hints: Remember that the string is a set of raw binary values, so using ord() on each character would give you the numbers you can then have str.format() render as hex values. You might also find the struct module helpful. looking for a suggestion on how to format this, '\x00\x11\xb2\x00@,O\xa4' into this [00-11-B2-00-40-2C-4F-A4] tia Best regards, eMyListsDDgmailto:emylists...@gmail.com ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] str format conversion help
eMyListsDDg emylists...@gmail.com wrote
First please start new threads wirth a new email, do not reply to
a previous post - it confuses threaded readers. (and sometimes
human readers too!)
'\x00\x11\xb2\x00@,O\xa4'
the above str is being returned from one key/value pair in
a dictionary. it is the addr of a network device.
i want to store the addr's in their 8byte mac format like this,
[00 11 b2 00 40 2C 4F A4]
Thats what you've got. The string is merely a representation
of that data.
the combinations of format strings using the print statement
hasn't resulted in what i need.
format strings are used to display data not to store it.
Do you really want to display the data in the format you've
shown? Or do you really want to store it as 8 bytes?
The two concepts are completely different and more
or less unrelated.
looking for a suggestion on how to format this,
'\x00\x11\xb2\x00@,O\xa4' into this [00-11-B2-00-40-2C-4F-A4]
OK, to display it you need to extract each byte and convert it to
a string representing the hex value. Fortunately you an treat a
string of bytes as charactrers and the hex() function will give you
the hex representation. So...
print [%s] % ('-'.join([hex(v) for v in theValue]) )
should be close...
HTH,
--
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/
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Re: [Tutor] str format conversion help
Steve, glad you pointed that out. struct.unpack or something...i'll look into that module. thx On 14-Jul-10 11:35, eMyListsDDg wrote: '\x00\x11\xb2\x00@,O\xa4' the above str is being returned from one key/value pair in a dictionary. it is the addr of a network device. i want to store the addr's in their 8byte mac format like this, [00 11 b2 00 40 2C 4F A4] the combinations of format strings using the print statement hasn't resulted in what i need. A few hints: Remember that the string is a set of raw binary values, so using ord() on each character would give you the numbers you can then have str.format() render as hex values. You might also find the struct module helpful. looking for a suggestion on how to format this, '\x00\x11\xb2\x00@,O\xa4' into this [00-11-B2-00-40-2C-4F-A4] tia Best regards, eMyListsDDgmailto:emylists...@gmail.com ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor -- Best regards, eMyListsDDgmailto:emylists...@gmail.com ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] str format conversion help
Hello Alan,
First please start new threads wirth a new email, do not reply to
thought i did, my apologies.
eMyListsDDg emylists...@gmail.com wrote
First please start new threads wirth a new email, do not reply to
a previous post - it confuses threaded readers. (and sometimes
human readers too!)
'\x00\x11\xb2\x00@,O\xa4'
the above str is being returned from one key/value pair in
a dictionary. it is the addr of a network device.
i want to store the addr's in their 8byte mac format like this,
[00 11 b2 00 40 2C 4F A4]
Thats what you've got. The string is merely a representation
of that data.
the combinations of format strings using the print statement
hasn't resulted in what i need.
format strings are used to display data not to store it.
Do you really want to display the data in the format you've
shown? Or do you really want to store it as 8 bytes?
the format shown. now that you point out a few things, it really wouldn't
matter.
The two concepts are completely different and more
or less unrelated.
i see that now, as a newbie to python.
looking for a suggestion on how to format this,
'\x00\x11\xb2\x00@,O\xa4' into this [00-11-B2-00-40-2C-4F-A4]
OK, to display it you need to extract each byte and convert it to
a string representing the hex value. Fortunately you an treat a
string of bytes as charactrers and the hex() function will give you
the hex representation. So...
print [%s] % ('-'.join([hex(v) for v in theValue]) )
helps me to understand the concept differences you pointed out better
appreciate the help...
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