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UnicodeDecodeError on Windows #10015

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alimanfoo opened this issue Nov 13, 2017 · 2 comments
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UnicodeDecodeError on Windows #10015

alimanfoo opened this issue Nov 13, 2017 · 2 comments
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00 - Bug 50 - Duplicate

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@alimanfoo
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I get the following behaviour on Windows only, using numpy 1.13.1 installed via conda:

>>> import numpy as np
>>> v = np.array('xxx', dtype='U3')[()]
>>> v
'xxx'
>>> a = np.empty(10, dtype='U3')
>>> a[:] = v
>>> a[0] == v
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
UnicodeDecodeError: 'utf-32-le' codec can't decode bytes in position 0-3: code point not in range(0x110000)

I don't understand what's happening here but this seemed surprising to me. Default locale on the Windows machine is cp1252 if that helps to know.

xref https://github.com/alimanfoo/zarr/pull/172
@eric-wieser
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eric-wieser commented Nov 13, 2017 •
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This is "that unicode scalar bug" again, and there's a dupe somewhere. More revealing:

>>> a = np.zeros(10, dtype='U3')
>>> a[:] = np.unicode_('xxx')
>>> a.view(np.void)
array([[120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63],
       [120   0 120   0 120   0   0   0  64  47 105 -63]],
      dtype='|V12')

Notice that:

  • x is using up 2 bytes, not 4
  • The garbage at the end

Related to:

@eric-wieser
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Found it.

Duplicate of #3258

@eric-wieser eric-wieser mentioned this issue Nov 13, 2017
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@eric-wieser @alimanfoo