[PYTHON MATRIX-SIG] NumPy 1.0b2: first comments
Konrad Hinsen
hinsen@ibs.ibs.fr
Fri, 21 Mar 1997 10:08:22 +0100
Yesterday I did a quick installation and a few tests on the new NumPy.
Here are some first comments.
- The installation instructions are missing in the archive.
- During installation, compileall.py reports syntax error in UserArray,
although it can later be imported without an error message. I have no
idea how this can happen...
- Complex arrays are not printed correctly:
>>> 1+0j
(1+0j)
>>> array([1+0j])
array([ 1+j ])
(In case anyone reports that the complex test code in LinearAlgebra.py
fails: it doesn't; it's just wrong printing of the results.)
Here's a quick fix. It may not produce totally correct formatting
(I didn't check thoroughly), but at least it prints correct values.
Replace the following function in ArrayPrinter.py:
def _formatComplex(x, real_format, imag_format):
r = _formatFloat(x.real, real_format)
i = _formatFloat(x.imag, imag_format, 0)
if imag_format[-1] == 'f':
zeros = len(i)
while zeros > 2 and i[zeros-1] == '0': zeros = zeros-1
i = i[:zeros] + 'j' + (len(i)-zeros)*' '
else:
i = i + 'j'
return r + i
Konrad.
--
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Konrad Hinsen | E-Mail: hinsen@ibs.ibs.fr
Laboratoire de Dynamique Moleculaire | Tel.: +33-4.76.88.99.28
Institut de Biologie Structurale | Fax: +33-4.76.88.54.94
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