Hi, I'm trying to use the additional 'title' feature of dtypes when creating arrays. The reason for using titles is that I want to store meta data about the columns in them (so do-not-use-titles is not the right solution for me...) Everything works fine without titles:

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arr = array([('john', 4),('mark', 3)], dtype=[('name','O'),('id',int)]) arr[0] ('john', 4) arr[0][0] 'john'

However here something is strange:

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arr = array([('john', 4),('mark', 3)], dtype=[(('source:yy', 'name'),'O'),(('source:xx','id'),int)]) arr[0] ('john', 4) arr[0][0] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: function takes at most 2 arguments (3 given)

Any ideas what I'm doing wrong? Any help would be appreciated. Thanks, Ralph Using: - Python V 2.6 (but same error with python 2.5) - Numpy 1.2.1 (but same error on numpy 1.0.3.1) - opensuse 10.3