环境是Ubuntu 12.x LTS 64位。我按如下方式运行安装:
sudo apt-get install python-numpy python-scipy python-matplotlib ipython ipython-notebook python-pandas python-sympy python-nose
所有东西安装得很好,我尝试了“开始”的例子只是为了发现这个错误就好像我的环境一样。没有正确设置..
参见orig @ http://www.scipy.org/getting-started.html
usernamep@ubuntudev:~$ ipython --pylab
Python 2.7.3 (default, Sep 26 2013, 20:03:06)
Type "copyright", "credits" or "license" for more information.
IPython 0.12.1 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
Welcome to pylab, a matplotlib-based Python environment [backend: TkAgg].
For more information, type 'help(pylab)'.
In [1]: from scipy import special, optimize
In [2]: f = lambda x: -special.jv(3,x)
In [3]: sol = optimize.minimize(f, 1.0)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
/home/user/<ipython-input-3-ea43eb308d3c> in <module>()
----> 1 sol = optimize.minimize(f, 1.0)
AttributeError: 'module' object has no attribute 'minimize'
In [4]:
我是否需要改进他们的例子的导入?现在检查他们的文档...
答案 0 :(得分:1)
使用scipy
安装的apt-get
几乎肯定已经过时了minimize
:( 0.10,我猜)。该代码适用于我:
>>> from scipy import special, optimize
>>> def f(x): return -special.jv(3,x)
>>> sol = optimize.minimize(f, 1.0)
>>> sol
status: 0
success: True
njev: 17
nfev: 51
hess_inv: array([[ 4.70024446]])
fun: -0.43439442684052476
x: array([ 4.20118891])
message: 'Optimization terminated successfully.'
jac: array([ -3.72529030e-09])
我认为使用pip
安装堆栈会更好。
答案 1 :(得分:1)
optimize.minimize
(参见http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.minimize.html)。
答案 2 :(得分:1)