I would like to say that these are two separate issues.  One is about the precision flag and the second about the exception masking flags of the FPU control words. Both issues affect a wider number of users than Python embedders using Delphi. For example C# uses 80 bit precision if I understand http://blogs.msdn.com/b/davidnotario/archive/2005/08/08/449092.aspx well.

Also both issues are primarily documentation issues.  If Python libraries make certain assumptions about the state of the FPU control word, these assumptions should be documented and users can then accommodate them.