numpy text io is fundamentally broken in python3, there are sometimes
workarounds, but currently its probably best to stick to python2 or not
use it.
The workarounds usually just make actually fixing the functions harder.
On 09/24/2015 09:24 AM, Eric Firing wrote:
> On 2015/09/23 9:17 PM, Andrew Nelson wrote:
>> Dear list,
>> whilst trying to write an array to disk I am coming across the
>> following. What am I doing wrong? Surely f is a file handle?
>> (python 3.4.3, numpy 1.9.2)
>>
>> import numpy as np
>> a = np.arange(10.)
>> with open('test.dat', 'w') as f:
>> np.savetxt(f, a)
>>
>
> It will work if you open with 'wb'. Yes, this seems like a bug; or at
> least, the anomaly should be noted in the docstring.
>
> Eric
>
>> ---------------------------------------------------------------------------
>>
>>
>> TypeError Traceback (most recent call
>> last)
>> <ipython-input-57-cf77f423517e> in<module>() 2 a = np.arange(10.)3
>> with open('test.dat', 'w') as f:---->
>> 4np.savetxt(f,
>> a)/Users/anz/Documents/Andy/programming/dev3/lib/python3.4/site-packages/numpy/lib/npyio.py
>>
>> in savetxt(fname, X, fmt, delimiter, newline, header, footer, comments)
>> 1085 else:1086 for row in X:-> 1087fh.write(asbytes(format % tuple(row)
>> + newline))1088 if len(footer) > 0:1089 footer = footer.replace('\n',
>> '\n' + comments)TypeError: must be str, not bytes
>>
>>
>>
>>
>> --
>> _____________________________________
>> Dr. Andrew Nelson
>>
>>
>> _____________________________________
>>
>>
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>>
>
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