[Numpy-discussion] dtype '|S0' not understood
Wed Sep 23 18:55:08 CDT 2009
It seems it's possible using e.g.
In : dtype([('foo', str)])Out: dtype([('foo', '|S0')])
to get yourself a zero-length string. However dtype('|S0') results in
a TypeError: data type not understood.
I understand the stupidity of creating a 0-length string field but
it's conceivable that it's accidental.
For example, it could lead to a situation where you've created that
field, are missing all the data you had meant to put in it, serialize
with np.save, and upon np.load aren't able to get _any_ of your data
back because the dtype descriptor is considered bogus (can you guess
why I thought of this scenario?).
It seems that either dtype(str) should do something more sensible than
zero-length string, or it should be possible to create it with dtype('|
S0'). Which should it be?
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