ImportError：dlopen（…）：找不到符號：__PyCodecInfo_GetIncrementalDecoder

Question

我是python的初學者。 當我嘗試python chainer/examples/mnist/train_mnist.py ，發生了錯誤。 我要執行鏈接器。

Traceback (most recent call last):
  File "chainer/examples/mnist/train_mnist.py", line 10, in <module>
    import numpy as np
  File "/usr/local/lib/python2.7/site-packages/numpy/__init__.py", line 180, in <module>
    from . import add_newdocs
  File "/usr/local/lib/python2.7/site-packages/numpy/add_newdocs.py", line 13, in <module>
    from numpy.lib import add_newdoc
  File "/usr/local/lib/python2.7/site-packages/numpy/lib/__init__.py", line 8, in <module>
    from .type_check import *
  File "/usr/local/lib/python2.7/site-packages/numpy/lib/type_check.py", line 11, in <module>
    import numpy.core.numeric as _nx
  File "/usr/local/lib/python2.7/site-packages/numpy/core/__init__.py", line 58, in <module>
    from numpy.testing import Tester
  File "/usr/local/lib/python2.7/site-packages/numpy/testing/__init__.py", line 14, in <module>
    from .utils import *
  File "/usr/local/lib/python2.7/site-packages/numpy/testing/utils.py", line 15, in <module>
    from tempfile import mkdtemp
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/tempfile.py", line 32, in <module>
    import io as _io
  File "/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/io.py", line 51, in <module>
    import _io
ImportError: dlopen(/usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so, 2): Symbol not found: __PyCodecInfo_GetIncrementalDecoder
  Referenced from: /usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so
  Expected in: flat namespace
 in /usr/local/Cellar/python/2.7.11/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload/_io.so

我該如何解決該錯誤？

Answer 1

伙計，當我嘗試在Mac Os El Captain中使用opencv時，我得到了類似的日志。 經過一段時間的嘗試，我通過從自制軟件然后從pip卸載numpy做到了。 看起來他們在哪里沖突。 之后，通過自制軟件進行安裝即可。

brew uninstall numpy
pip uninstall numpy
brew install numpy

如果這樣不嘗試從homebrew重新安裝python，並確保您具有使用以下命令的xcode命令行工具：

xcode-select --install

希望能幫助到你。