[New-bugs-announce] [issue41589] Strange behavior with sparse.dok_matrix decimal is cast to integer

[browser.365]

New submission from browser.365 <browser.home.365 at gmail.com>:

import numpy as np
from scipy import sparse
import decimal
D = decimal.Decimal

Al = sparse.dok_matrix((10, 10), dtype=np.dtype(D))
Al.astype(D)

Al[1,1] = D('0.1')
print(Al[1,1])
print(type(Al[1,1]))

Al[0,0] = D('0')
print(Al[0,0])
print(type(Al[0,0]))



z = decimal.Decimal('0')

print(z)
print(type(z))
print(' - ')


Running the above code gives:

0.1
<class 'decimal.Decimal'>
0
<class 'int'>
0
<class 'decimal.Decimal'>
 - 

All of the elements should be decimal.

----------
messages: 375660
nosy: browser.365
priority: normal
severity: normal
status: open
title: Strange behavior with sparse.dok_matrix  decimal is cast to integer
type: behavior
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41589>
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