python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/decimaltestdata/testall.decTest

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+------------------------------------------------------------------------
+-- testall.decTest -- run all general decimal arithmetic testcases    --
+-- Copyright (c) IBM Corporation, 1981, 2008.  All rights reserved.   --
+------------------------------------------------------------------------
+-- Please see the document "General Decimal Arithmetic Testcases"     --
+-- at http://www2.hursley.ibm.com/decimal for the description of      --
+-- these testcases.                                                   --
+--                                                                    --
+-- These testcases are experimental ('beta' versions), and they       --
+-- may contain errors.  They are offered on an as-is basis.  In       --
+-- particular, achieving the same results as the tests here is not    --
+-- a guarantee that an implementation complies with any Standard      --
+-- or specification.  The tests are not exhaustive.                   --
+--                                                                    --
+-- Please send comments, suggestions, and corrections to the author:  --
+--   Mike Cowlishaw, IBM Fellow                                       --
+--   IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK         --
+--   mfc@uk.ibm.com                                                   --
+------------------------------------------------------------------------
+version: 2.59
+
+-- core tests (using Extended: 1) --------------------------------------
+dectest: base
+
+dectest: abs
+dectest: add
+dectest: and
+dectest: clamp
+dectest: class
+dectest: compare
+dectest: comparesig
+dectest: comparetotal
+dectest: comparetotmag
+dectest: copy
+dectest: copyabs
+dectest: copynegate
+dectest: copysign
+dectest: divide
+dectest: divideint
+dectest: exp
+dectest: fma
+dectest: inexact
+dectest: invert
+dectest: ln
+dectest: logb
+dectest: log10
+dectest: max
+dectest: maxmag
+dectest: min
+dectest: minmag
+dectest: minus
+dectest: multiply
+dectest: nextminus
+dectest: nextplus
+dectest: nexttoward
+dectest: or
+dectest: plus
+dectest: power
+dectest: powersqrt
+dectest: quantize
+dectest: randoms
+dectest: reduce               -- [was called normalize]
+dectest: remainder
+dectest: remaindernear
+dectest: rescale              -- [obsolete]
+dectest: rotate
+dectest: rounding
+dectest: samequantum
+dectest: scaleb
+dectest: shift
+dectest: squareroot
+dectest: subtract
+dectest: tointegral
+dectest: tointegralx
+dectest: trim
+dectest: xor
+
+-- The next are for the Strawman 4d concrete representations and
+-- tests at those sizes [including dsEncode, ddEncode, and dqEncode,
+-- which replace decimal32, decimal64, and decimal128]
+dectest: decSingle
+dectest: decDouble
+dectest: decQuad
+
+-- General 31->33-digit boundary tests
+dectest: randombound32
+