From: tjroberts137@sbcglobal.net   
      
   On 6/21/21 3:01 AM, mark horn wrote:   
   > [...]   
      
   For extended-precision arithmetic, rather than "Sage, Maple, and   
   Mathematica", people may find it easier to use Python and its decimal   
   module. It provides arbitrary-precision decimal arithmetic using   
   standard Python arithmetic operators and functions. It defaults to 28   
   significant digits, well beyond double-precision floating point.   
      
    >>> from decimal import *   
    >>> two = Decimal(2)   
    >>> Decimal.sqrt(two)   
   Decimal('1.414213562373095048801688724')   
    >>> getcontext().prec = 50   
    >>> Decimal.sqrt(two)   
   Decimal('1.4142135623730950488016887242096980785696718753769')   
      
   Tom Roberts   
      
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