虚拟环境中的Jupyter Notebook没有看到虚拟环境包

Question

我正在尝试在虚拟环境中使用Jupyter Notebook。 我创建了一个新的virtualenv virtualenv ker12 +激活+安装特定版本的keras或任何其他库。

也如Using a virtualenv in an IPython notebook中提到的那样：

pip install ipykernel

和

python -m ipykernel install --user --name=my-virtualenv-name

当我运行笔记本并写入时 ! which jupyter输出正确

  

/用户/ MYNAME /的virtualenv / ker12 / bin中/蟒

但是当我尝试导入库时，例如import keras则会出错。

  

ImportError：没有名为keras的模块

但是当我写pip freeze | grep Keras时从另一边 输出是：

  

Keras == 1.2.0

更新1：

此问题与 Keras 无关，与任何其他库（例如 pandas ）相关

如果我打印os.path，则输出结果如下：

  来自/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/posixpath.pyc>

的

＆lt;'module'posixpath'

从“命令行python”中，os.path看起来正确

  

＆lt;'module'posixpath'来自'/Users/my_name/virtualenv/ker12/lib/python2.7/posixpath.pyc'>

更新2：

如果我从终端打印sys.path而jupyter输出也不同：

终端

  

/Users/myname/virtualenv/ker12/lib/python27.zip   /Users/myname/virtualenv/ker12/lib/python2.7   /Users/myname/virtualenv/ker12/lib/python2.7/plat-darwin   /Users/myname/virtualenv/ker12/lib/python2.7/plat-mac   /Users/myname/virtualenv/ker12/lib/python2.7/plat-mac/lib-scriptpackages   /Users/myname/virtualenv/ker12/lib/python2.7/lib-tk   /Users/myname/virtualenv/ker12/lib/python2.7/lib-old   /Users/myname/virtualenv/ker12/lib/python2.7/lib-dynload   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework /Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages   /Users/myname/virtualenv/ker12/lib/python2.7/site-packages

来自JUPYTER的

  

/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python27.zip   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework /Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old   /usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload   /usr/local/lib/python2.7/site-packages   /usr/local/lib/python2.7/site-packages/IPython/extensions   /Users/myname/.ipython`

Answer 1

解决方案是使用以下命令打开jupyter notebook：

~/virtualenv/my_venv_name/bin/jupyter-notebook

Answer 2

您不应该安装ipykernel - 而应该在虚拟环境中进行完整的Jupyter安装（pip install jupyter）。此外，请确保不使用--system-site-packages选项创建虚拟环境。

另见this answer。