[Python-Dev] %b format? (original) (raw)

Greg Ewing greg@cosc.canterbury.ac.nz
Thu, 31 May 2001 17:17:16 +1200 (NZST)

Tim:

On the fifth hand, I doubt anyone would want to add new % format codes for bases {2..36} - {2, 8, 10, 16}.

So, just add one general one:

%m.nb

with n being the base. If n defaults to 2, you can read the "b" as either "base" or "binary".

Literals:

0b(5)21403 general 0b11001101 binary

Conversion functions:

base(x, n) general bin(x) equivalent to base(x, 2) (for symmetry with existing hex, oct)

Type slots:

base(x, n)

Backwards compatibility measures:

hex(x) --> base(x, 16) oct(x) --> base(x, 8) bin(x) --> base(x, 2)

base(x, n) checks hex and oct slots for special cases of n=16 and n=8, falls back on base

There, that takes care of integers. Anyone want to do the equivalent for floats ?-)

Greg Ewing, Computer Science Dept, +--------------------------------------+ University of Canterbury, | A citizen of NewZealandCorp, a | Christchurch, New Zealand | wholly-owned subsidiary of USA Inc. | greg@cosc.canterbury.ac.nz +--------------------------------------+