小编msu*_*gas的帖子

我目前正在按照教程安装SciPy Stack在Ubuntu 12.04(精确穿山甲)上安装SciPy(我不能使用apt-get install因为我需要最新版本).

但是,当我执行以下命令时出现错误:

python setup.py build
sudo python setup.py install --prefix=/usr/local   # Installs to /usr/local

python setup.py build

michael@michael-laptop-ubuntu:~/Downloads/scipy-0.11.0rc1$ python setup.py buildRunning from scipy source directory.
blas_opt_info:
blas_mkl_info:
  libraries mkl,vml,guide not found in /usr/local/lib
  libraries mkl,vml,guide not found in /usr/lib
  libraries mkl,vml,guide not found in /usr/lib/i386-linux-gnu
  NOT AVAILABLE

atlas_blas_threads_info:
Setting PTATLAS=ATLAS
  libraries ptf77blas,ptcblas,atlas not found in /usr/local/lib
  libraries ptf77blas,ptcblas,atlas not found in /usr/lib/sse2
  libraries ptf77blas,ptcblas,atlas not found in /usr/lib
  libraries ptf77blas,ptcblas,atlas not …

实际上我正在进行一个多模型的项目 - >很多.我需要找到当前用户所有的信用/设备/项目(我认为只有两个列(id和score)的表信用是没用的,所以我将这个表合并到连接表中).

我收到此错误:

SystemStackError in Users#show

Showing app/views/shared/_credit.html.erb where line # raised:

stack level too deep

而这两个模型:

class **Credit** < ActiveRecord::Base
  attr_accessible :created_at, :credit_id, :device_id, :project_id, :score, :user_id

belongs_to :device
belongs_to :user
belongs_to :project
belongs_to :score

end

class **User** < ActiveRecord::Base

has_many :credit
has_many :credit, :through => :credit, foreign_key: "user_id", dependent: :destroy
end

谢谢 !

最好.

当我尝试在python中执行我的主文件时遇到问题(我在使用python 2.7的Ubuntu 12.04上).我收到此错误:

michael@michael-laptop-ubuntu:~/rubyWorkSpace/pymcs$ python __main__.py Traceback (most recent call last):
  File "__main__.py", line 9, in <module>
    sys.exit(main())
  File "__main__.py", line 5, in main
    import launch
  File "/home/michael/rubyWorkSpace/pymcs/launch.py", line 2, in <module>
    import src.lib.utils as fn
  File "/home/michael/rubyWorkSpace/pymcs/src/lib/utils.py", line 4, in <module>
    import scipy.signal, numdisplay, sys
  File "/home/michael/.local/lib/python2.7/site-packages/scipy/signal/__init__.py", line 200, in <module>
    from bsplines import *
  File "/home/michael/.local/lib/python2.7/site-packages/scipy/signal/bsplines.py", line 2, in <module>
    import scipy.special
  File "/home/michael/.local/lib/python2.7/site-packages/scipy/special/__init__.py", line 527, in <module>
    from basic import *
  File "/home/michael/.local/lib/python2.7/site-packages/scipy/special/basic.py", line 12, in <module> …

我正在尝试使用 Doctrine 中的删除查询仅删除 x 个对象。并且由于学说中没有 LIMIT，我们应该使用 $query->setMaxResults($limit) 来代替。我正在使用 Symfony2。

但是，它不适用于以下查询（无论是否使用 $query->setMaxResults($limit)，它都会删除所有内容而不是删除 $limit 第一个实体）。

$limit = 10;
$query = $entityManager->createQuery(
        'DELETE FROM MyProject\Bundle\MyBundle\Entity\MyEntity myEntity
         WHERE myEntity.cost = 50'
    )
$query->setMaxResults($limit);
$query->execute();