array from list of lists

[Pierre GM]

You could try the fromarrays function of numpy.core.records

>>> mydescriptor = {'names': (a','b','c','d'), 'formats':('f4', 'f4', 'f4', 
'f4')}
>>> a = N.core.records.fromarrays(N.transpose(yourlist), dtype=mydescriptor)

The 'transpose' function ensures that 'fromarrays' sees 4 arrays (one for each 
column).

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