[ python-Feature Requests-846568 ] All numbers are bitarrays too
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Thu Jan 1 01:22:37 EST 2004
Feature Requests item #846568, was opened at 2003-11-21 08:18
Message generated for change (Comment added) made by rhettinger
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Category: Python Interpreter Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Alexander Rødseth (alexanro)
Assigned to: Nobody/Anonymous (nobody)
Summary: All numbers are bitarrays too
Initial Comment:
It would be nice if all numbers could be used as arrays
of bits as well.
Example:
>>> i = 10
>>> i[0] = 1
>>> print i
11
>>> print list(i)
[1, 1, 0, 1]
>>> "".join(map(lambda b:str(b), l))
'1101'
>>> for bit in i: print bit
1
1
0
1
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>Comment By: Raymond Hettinger (rhettinger)
Date: 2004-01-01 01:22
Message:
Logged In: YES
user_id=80475
Allowing assignments like i[o]=1 can only work for mutable
objects. Since int is immutable, your idea would need to
be implemented as a separate extension class.
I recommend writing it first in pure python and posting it
as a cookbook recipe. After it matures (possibly growing
other bit twiddling methods such as countbits) and has a fan
club (with some real world applications), it might warrant
coding in C.
>From my experience with the setmodule, I can say that this
is not a trivial understanding, so you really have to be
sure you've worked out the API and that it meets real needs.
----------------------------------------------------------------------
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