Question

最近我在jupyter笔记本中安装了第二个python，以便我可以在需要时使用Python2或3。但是，在安装了三个之后，我在之前的python2笔记本中遇到了matplotlib，scipy和numpy的问题。

打字

%pylab inline
import time
import datetime
import glob
import os
from os import system
import platform
import scipy.ndimage as snd
import numpy as np
from matplotlib.pyplot import *

给了我

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-fe04d06772cd> in <module>()
----> 1 get_ipython().magic(u'pylab inline')
      2 import time
      3 import datetime
      4 import glob
      5 import os

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in magic(self, arg_s)
   2334         magic_name, _, magic_arg_s = arg_s.partition(' ')
   2335         magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
-> 2336         return self.run_line_magic(magic_name, magic_arg_s)
   2337 
   2338     #-------------------------------------------------------------------------

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in run_line_magic(self, magic_name, line)
   2255                 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
   2256             with self.builtin_trap:
-> 2257                 result = fn(*args,**kwargs)
   2258             return result
   2259 

<decorator-gen-107> in pylab(self, line)

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/magic.pyc in <lambda>(f, *a, **k)
    191     # but it's overkill for just that one bit of state.
    192     def magic_deco(arg):
--> 193         call = lambda f, *a, **k: f(*a, **k)
    194 
    195         if callable(arg):

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/magics/pylab.pyc in pylab(self, line)
    154             import_all = not args.no_import_all
    155 
--> 156         gui, backend, clobbered = self.shell.enable_pylab(args.gui, import_all=import_all)
    157         self._show_matplotlib_backend(args.gui, backend)
    158         print ("Populating the interactive namespace from numpy and matplotlib")

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in enable_pylab(self, gui, import_all, welcome_message)
   3169         from IPython.core.pylabtools import import_pylab
   3170 
-> 3171         gui, backend = self.enable_matplotlib(gui)
   3172 
   3173         # We want to prevent the loading of pylab to pollute the user's

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in enable_matplotlib(self, gui)
   3118         """
   3119         from IPython.core import pylabtools as pt
-> 3120         gui, backend = pt.find_gui_and_backend(gui, self.pylab_gui_select)
   3121 
   3122         if gui != 'inline':

/Users/stephanng/anaconda/envs/py27/lib/python2.7/site-packages/IPython/core/pylabtools.pyc in find_gui_and_backend(gui, gui_select)
    237     """
    238 
--> 239     import matplotlib
    240 
    241     if gui and gui != 'auto':

ImportError: No module named matplotlib

我从中得到的是，在查看导入时，python2不再指向正确的目录。如何设置正确目录的路径？

先谢谢！

Answer 1

我完全卸载了所有内容，然后重新安装它并修正了路径。

Answer 2

这是一个非常普遍的问题，不同的python用例需要不同的安装。为避免串扰，您可以使用virtualenv将安装分开。

两种形式的Jupyter笔记本的问题

2 个答案: