導入matplotlib不起作用

Question

在終端窗口中，打開ipython環境，然后輸入import matplotlib.pyplot as plt 。 通過執行此操作得到的錯誤消息是：

ImportError                               Traceback (most recent call last)
<ipython-input-1-eff513f636fd> in <module>()
----> 1 import matplotlib.pyplot as plt

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py in <module>()
     25 
     26 import matplotlib
---> 27 import matplotlib.colorbar
     28 from matplotlib import style
     29 from matplotlib import _pylab_helpers, interactive

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/colorbar.py in <module>()
     32 import matplotlib.artist as martist
     33 import matplotlib.cbook as cbook
---> 34 import matplotlib.collections as collections
     35 import matplotlib.colors as colors
     36 import matplotlib.contour as contour

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/collections.py in <module>()
     25 import matplotlib.artist as artist
     26 from matplotlib.artist import allow_rasterization
---> 27 import matplotlib.backend_bases as backend_bases
     28 import matplotlib.path as mpath
     29 from matplotlib import _path

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py in <module>()
     54 
     55 import matplotlib.tight_bbox as tight_bbox
---> 56 import matplotlib.textpath as textpath
     57 from matplotlib.path import Path
     58 from matplotlib.cbook import mplDeprecation

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/textpath.py in <module>()
     20 from matplotlib.ft2font import FT2Font, KERNING_DEFAULT, LOAD_NO_HINTING
     21 from matplotlib.ft2font import LOAD_TARGET_LIGHT
---> 22 from matplotlib.mathtext import MathTextParser
     23 import matplotlib.dviread as dviread
     24 from matplotlib.font_manager import FontProperties

/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/mathtext.py in <module>()
     61 
     62 import matplotlib.colors as mcolors
---> 63 import matplotlib._png as _png
     64 ####################
     65 

ImportError: dlopen(/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/_png.so, 2): Library not loaded: @loader_path/../../../libpng15.15.dylib
  Referenced from: /Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/_png.so
  Reason: image not found

我將非常感謝您解決此問題的一種方法。 我想做的就是繼續學習物理，所有這些不斷的計算挫折都非常麻煩和煩人。 因此，我應該感謝任何願意協助的人的迅速答復。

Answer 1

ImportError: dlopen(/Users/arazipinhas/anaconda/lib/python2.7/site-packages/matplotlib/_png.so, 2):
Library not loaded: @loader_path/../../../libpng15.15.dylib

真的很簡單：您的matplotlib與libpng15鏈接在一起，但是在運行時找不到。 因此，您可以搜索該文件libpng15.15.dylib 。 如果缺少該文件，則說明您的安裝不完整，並且您可能缺少用於構建matplotlib的libPNG版本。

Answer 2

Continuum最近更新了libpng，這導致了此損壞。 抱歉給你帶來不便。

解決此錯誤的方法是在終端中運行

conda update qt
conda update matplotlib