matplotlib導入但pyplot無法導入

Question

我的Mac中有兩個python，分別是python 3.4和2.7。我可以在python 3.4中導入matplotlib，但在運行時

from matplotlib import pyplot

我得到錯誤：

Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    from matplotlib import pyplot
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/pyplot.py", line 29, in <module>
    import matplotlib.colorbar
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/colorbar.py", line 34, in <module>
    import matplotlib.collections as collections
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/collections.py", line 27, in <module>
    import matplotlib.backend_bases as backend_bases
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/backend_bases.py", line 62, in <module>
    import matplotlib.textpath as textpath
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/textpath.py", line 18, in <module>
    from matplotlib.mathtext import MathTextParser
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/mathtext.py", line 63, in <module>
    import matplotlib._png as _png
ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/_png.so, 2): Library not loaded: libpng15.15.dylib
  Referenced from: /Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/matplotlib-1.5.dev1-py3.4-macosx-10.6-intel.egg/matplotlib/_png.so
  Reason: image not found

我是初學者。 有人可以幫我弄清楚發生了什么事，我該怎么辦？

Answer 1

這是你的問題。

庫未加載：libpng15.15.dylib

使用此命令序列到達所需位置。

pip uninstall matplotlib
rm -rf /tmp/pip-build-root/
brew update
brew install libpng --universal
brew install freetype --universal
pip install matplotlib

(venv)  venv ~ python 
Python 3.4.3 (default, Mar 23 2015, 04:19:36) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from matplotlib import pyplot
>>> 

Answer 2

對我有用的問題的簡單解決方案：

1-輸入終端類型$open -a Finder /usr

2-右鍵單擊本地並獲取信息

3-解鎖底部的鎖

4單擊+號並將您的用戶添加到列表中並賦予讀/寫權限

5-單擊底部的齒輪標志，然后選擇“應用於包含的項目”以遞歸該目錄下的目錄，並為其下的所有目錄分配特權。