binascii.a2b_binary

[Ed Swarthout]

Why is there no binascii.a2b_bi nary(bitstr) which returns the binary data
represented by the bit string? Like:
[color=blue][color=green][color=darkred]
>>> binascii.a2b_bi nary('001100110 0110101')[/color][/color][/color]
'35'

perl has pack("B*", "00110011001101 01");

What is the python way to do this?

Other fun with strings:
[color=blue][color=green][color=darkred]
>>> '3333'.decode(' hex')[/color][/color][/color]
'33'[color=blue][color=green][color=darkred]
>>> '3333'.encode(' hex')[/color][/color][/color]
'33333333'

I easily found the doc for str.decode(), but it appears to only mention
encodings for languages. It took me a while to connect it to hex_codec.
Maybe a more direct link could be added.

Thanks,
-EdS

[Scott David Daniels]

Re: binascii.a2b_bi nary

Ed Swarthout wrote:[color=blue]
> Why is there no binascii.a2b_bi nary(bitstr) which returns the binary data
> represented by the bit string? Like:
>[color=green][color=darkred]
>>>> binascii.a2b_bi nary('001100110 0110101')[/color][/color]
> '35'
> perl has pack("B*", "00110011001101 01");[/color]

What, you mean like:
int('0011001100 110101', 2)
Which you could show as:
hex(int('001100 1100110101', 2))

I guess because Python is not so wonderful as Perl. Apparently Python
stupidly forgot to follow Perl's great naming conventions.

--Scott David Daniels
scott.daniels@a cm.org

[Serge Orlov]

Re: binascii.a2b_bi nary

Ed Swarthout wrote:[color=blue]
> Why is there no binascii.a2b_bi nary(bitstr) which returns the binary data
> represented by the bit string? Like:
>[color=green][color=darkred]
> >>> binascii.a2b_bi nary('001100110 0110101')[/color][/color]
> '35'
>
> perl has pack("B*", "00110011001101 01");
>
> What is the python way to do this?[/color]

to post a question on comp.lang.pytho n and have the code written by
somebody else :)

def a2b_binary(s):
return ''.join(chr(int (s[pos:pos+8],2)) for pos in
range(0,len(s), 8))