Question

我尝试执行以下操作

from scipy import *
from numpy import *
import scipy as s
import numpy as np
import math
import scipy.sparse as l
from plot import Graph3DSolution
import numpy.linalg as lin

currentSol=s.sparse.linalg.inv(I-C)*A*lastSol

我错过了一些代码，但问题是这个

Traceback (most recent call last):
  File "explict1wave.py", line 62, in <module>
    currentSol=s.sparse.linalg.inv(I-C)*A*lastSol
AttributeError: 'module' object has no attribute 'linalg'

Python 2.7.6 |Anaconda 1.9.1 (x86_64)| (default, Jan 10 2014, 11:23:15) 
[GCC 4.0.1 (Apple Inc. build 5493)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
im>>> import scipy
>>> scipy.__version__
'0.14.0'
>>>

我查阅文档，看起来这些库自.12以来就存在了。我不知道问题是什么，但我确定它的东西很简单，我没有看到。

Answer 1

>>> import scipy as s
>>> s.sparse
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'sparse'
>>> 
>>> from scipy.sparse import linalg
>>> linalg.inv
<function inv at 0x19b1758>
>>>

一般recommendations for importing functions from scipy。

另一方面，最好避免明星进口。我们不建议使用这些from scipy import *，from numpy import *，此处不需要。与import scipy as s相同。

反演稀疏矩阵pylab的问题

1 个答案: