[Numpy-discussion] Enhancements and bug fix for npyio

[Derek Homeier]

Hi,

in my experience numbers loaded from text files very often require  
identical conversion for all data (e.g. parsing Fortran-style double  
precision, or German vs. English decimals...).
Yet loadtxt and genfromtxt in such cases require the user to construct  
a dictionary of converters for every single data column,  a task that  
could be easily handled within the routines. I am therefore putting up  
a patch for testing that allows users to specify a
default converter for all input data as "converters={-1: conv}" (or  
alternatively {'all': conv}, leaving that open to discussion).
Please test the changeset (still lacking tests for the new option) at
https://github.com/dhomeier/numpy/compare/master...iocnv-wildcard
which also contains some bug fixes to handle complex input.

Awaiting your comments,
							Derek