Binary numbers

[Douglas Soares de Andrade]

Hi !

How to work with binary numbers in python ? Is there a way to print a number
in its binary form like we do with oct() or hex() ?

Im doing a project that i have to work with binaries and i tired of convert
numbers to string all the time to perform some operations.

I searched about it in many places like python.org and google, but not found
anything useful.

Thats why im asking this.

And another question... if python has not a way to do this, why i let me use
oct(), hex() and not bin() ?

Thanks for the help !

 

[Douglas Soares de Andrade]

Hi !

Pardon me, but what itoa has to do it the history ?

See ya !

Em Quarta 08 Junho 2005 00:34, Dan Bishop escreveu:

 

[Dan Bishop]

Hi !

How to work with binary numbers in python ? Is there a way to print a number
in its binary form like we do with oct() or hex() ?

Im doing a project that i have to work with binaries and i tired of convert
numbers to string all the time to perform some operations.

I searched about it in many places like python.org and google, but not found
anything useful.

Search for "itoa".

 

[Kent Johnson]

Hi !

How to work with binary numbers in python ? Is there a way to print a number
in its binary form like we do with oct() or hex() ?

This is a popular topic in the Python Cookbook, maybe one of these recipes will suit you:
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/219300
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/111286
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65212

Kent

 

[mensanator]

Hi !

How to work with binary numbers in python ? Is there a way to print a number
in its binary form like we do with oct() or hex() ?

Im doing a project that i have to work with binaries and i tired of convert
numbers to string all the time to perform some operations.

I searched about it in many places like python.org and google, but not found
anything useful.

Thats why im asking this.

And another question... if python has not a way to do this, why i let me use
oct(), hex() and not bin() ?

Thanks for the help !

--
Douglas Soares de Andrade
http://douglasandrade.cjb.net - dsa at unilestemg.br
UnilesteMG - www.unilestemg.br
ICQ, MSN = 76277921, douglas at tuxfamily.org

You might want to try the GMPY module:
Help on built-in function digits:

digits(...)
digits(x[,base]): returns Python string representing x in the
given base (2 to 36, default 10 if omitted or 0); leading '-'
11111111111111111111111111111111

 

[Douglas Soares de Andrade]

Hi!

Em Quarta 08 Junho 2005 09:38, Guyon Morée escreveu:

Don't know if this is what you mean, but:

Binary to decimal:

267

Dont know this way of using it. Thanks for the teachings

See ya !

 

[=?iso-8859-1?B?R3V5b24gTW9y6WU=?=]

Don't know if this is what you mean, but:

Binary to decimal:

267

.... if dec_number == 0: return '0'
.... return (dec2bin(dec_number >> 1) + str(dec_number % 2))
....'0100001011'