[英]IPython import failure and python sys.path in general
我正在按照这篇文章制作一个ipython规则所有的virtualenvs。
根据我的理解,该帖子的主要思想是,当在virtualenv中,ipython无法找到它的模块。
(a-virtualenv)me@pc:~$ ipython
Traceback (most recent call last):
File "/usr/bin/ipython", line 19, in <module>
from IPython.frontend.terminal.ipapp import launch_new_instance
ImportError: No module named IPython.frontend.terminal.ipapp
要解决这个问题,我将其添加到我的/ usr / bin / ipython中
import sys
if "/usr/lib/python2.7/dist-packages" not in sys.path:
sys.path.append("/usr/lib/python2.7/dist-packages")
这个技巧适用于Balthazar。 但就我而言,我明白了
Traceback (most recent call last):
File "/usr/bin/ipython", line 18, in <module>
from IPython.frontend.terminal.ipapp import launch_new_instance
File "/usr/lib/python2.7/dist-packages/IPython/__init__.py", line 46, in <module>
from .frontend.terminal.embed import embed
File "/usr/lib/python2.7/dist-packages/IPython/frontend/terminal/embed.py", line 37, in <module>
from IPython.frontend.terminal.ipapp import load_default_config
File "/usr/lib/python2.7/dist-packages/IPython/frontend/terminal/ipapp.py", line 38, in <module>
from IPython.core.completer import IPCompleter
File "/usr/lib/python2.7/dist-packages/IPython/core/completer.py", line 84, in <module>
from IPython.utils import generics
File "/usr/lib/python2.7/dist-packages/IPython/utils/generics.py", line 19, in <module>
from IPython.external.simplegeneric import generic
File "/usr/lib/python2.7/dist-packages/IPython/external/simplegeneric/__init__.py", line 4, in <module>
from _simplegeneric import *
ImportError: No module named _simplegeneric
我想也许我应该将/usr/lib/python2.7/dist-packages/IPython/external
添加到/usr/bin/ipython
sys.path
。 我得到的是
Traceback (most recent call last):
File "/usr/bin/ipython", line 18, in <module>
from IPython.frontend.terminal.ipapp import launch_new_instance
File "/usr/lib/python2.7/dist-packages/IPython/__init__.py", line 43, in <module>
from .config.loader import Config
File "/usr/lib/python2.7/dist-packages/IPython/config/loader.py", line 27, in <module>
from IPython.utils.path import filefind, get_ipython_dir
File "/usr/lib/python2.7/dist-packages/IPython/utils/path.py", line 24, in <module>
from IPython.utils.process import system
File "/usr/lib/python2.7/dist-packages/IPython/utils/process.py", line 27, in <module>
from ._process_posix import _find_cmd, system, getoutput, arg_split
File "/usr/lib/python2.7/dist-packages/IPython/utils/_process_posix.py", line 27, in <module>
from IPython.utils import text
File "/usr/lib/python2.7/dist-packages/IPython/utils/text.py", line 27, in <module>
from IPython.external.path import path
ImportError: cannot import name path
此错误发生在IPython/__init__py
第43行,但前一行发生在第46行。
如何让ipython与virtualenv一起工作?
如何将/usr/lib/python2.7/dist-packages/IPython/external
添加到sys.path
导致新的错误?
为了更好地理解python导入路径,我应该阅读什么?
谢谢!
PS:正常的IPython sys.path
['',
'/usr/bin',
'/usr/lib/python2.7',
'/usr/lib/python2.7/plat-linux2',
'/usr/lib/python2.7/lib-tk',
'/usr/lib/python2.7/lib-old',
'/usr/lib/python2.7/lib-dynload',
'/usr/local/lib/python2.7/dist-packages',
'/usr/lib/python2.7/dist-packages',
'/usr/lib/python2.7/dist-packages/PIL',
'/usr/lib/python2.7/dist-packages/gst-0.10',
'/usr/lib/python2.7/dist-packages/gtk-2.0',
'/usr/lib/pymodules/python2.7',
'/usr/lib/python2.7/dist-packages/ubuntu-sso-client',
'/usr/lib/python2.7/dist-packages/ubuntuone-client',
'/usr/lib/python2.7/dist-packages/ubuntuone-control-panel',
'/usr/lib/python2.7/dist-packages/ubuntuone-couch',
'/usr/lib/python2.7/dist-packages/ubuntuone-installer',
'/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol',
'/usr/lib/python2.7/dist-packages/IPython/extensions']
IPython现在似乎工作了!
因为ipython找不到simplegeneric。 我试图找到simplegeneric,发现simplegeneric在'/usr/lib/pymodules/python2.7'中。 在添加'/usr/lib/pymodules/python2.7'之后,ipython工作正常。
Jeff Tratner的评论真有帮助!
如果你使用apt-get
安装ipython3
,你就不会遇到任何问题。
而不是ipython
,你应该在终端上键入ipython3
。
对于Python 2,使用ipython2
。
改变路径并没有任何帮助。 然而,作为一个超级用户运行ipython工作(虽然我并不为此感到自豪!)
sudo ipython
pip install ipython
而不是apt-get install ipython
。 前者安装在virtualenv中,后者安装到你的系统python包中。
我有同样的问题,在我的情况下,原因是目录:/usr/lib/python2.7/dist-packages没有添加到创建虚拟环境时的路径(我想知道原因)
在我的情况下,终端中的以下解决了问题:
workon 'your_environment_here'
add2virtualenv /usr/lib/python2.7/dist-packages
注意:这假设您使用的是virtualenvwrapper
在我的例子中,它是一个更高的包,在我的自定义Python路径名为“path”,导致ImportError来自:
import IPython.external.path as path
我在一个新的ubuntu主机中经历了一些奇怪的事情,并意识到我在mac上与mbuvirtualenv的行为有所不同,而不是ubuntu。 我已经克服了这个差异
'mkvirtualenv --system-site-packages mynewenv'
对我来说,解决方案是将 IPython从0.13.2 升级到目前最新的4.0.0。
类似的traceback
我在成功安装ipython
后遇到了python 3.5.4
和pip 10.0.1
。
line 32, in <module>
from .debugger import TerminalPdb, Pdb
File "/usr/lib/python3.5/site-packages/IPython/terminal/debugger.py", line 6, in <module>
from IPython.core.completer import IPCompleter
File "/usr/lib/python3.5/site-packages/IPython/core/completer.py", line 137, in <module>
from IPython.utils import generics
File "/usr/lib/python3.5/site-packages/IPython/utils/generics.py", line 8, in <module>
from simplegeneric import generic
ImportError: No module named 'simplegeneric'
更新或安装simplegeneric
即sudo pip install simplegeneric --upgrade
我得到
要求已经是最新的:/usr/lib/python3.5/site-packages(0.8.1)中的simplegeneric
经过一些初步试验后,我在google / stackoverflow上搜索,看看是否有其他人遇到过类似的问题并发现了这一点。 它的@zjk答案可以帮助我找到解决方案。
解决方案:在python3.5
安装包dir中找到只有egg
文件夹。 所以我删除了它们并重新安装了simplegeneric
。
sudo rm -rf /usr/lib/python3.5/site-packages/simplegeneric-0.8.1-py3.5.egg-info/
sudo pip install simplegeneric
之后ipython就像魅力一样。
注意:我在系统级安装包,这就是sudo
所需的原因。
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