在导入cv2时导入python

我已经使用brew安装了opencv3，但在执行导入cv2时遇到了导入错误

>>> import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>

ImportError: dlopen(/usr/local/lib/python2.7/site-packages/cv2.so, 2): Library not loaded: /usr/local/opt/libpng/lib/libpng16.16.dylib

  Referenced from: /usr/local/Cellar/opencv/2.4.12_2/lib/libopencv_highgui.2.4.dylib
  Reason: Incompatible library version: libopencv_highgui.2.4.dylib requires version 37.0.0 or later, but libpng16.16.dylib provides version 35.0.0

导入cv2 回溯（最近一次呼叫最后一次）： 文件“”，第1行，在 导入错误：dlopen（/usr/local/lib/python2.7/site-packages/cv2.so，2）：未加载库：/usr/local/opt/libpng/lib/libpng16.16.dylib 引用自：/usr/local/ceral/opencv/2.4.12_2/lib/libopencv_highgui.2.4.dylib 原因：库版本不兼容：libopencv_highgui.2.4.dylib需要37.0.0或更高版本，但libpng16.16.dylib提供35.0.0版本

---

有人能帮忙吗？

以下步骤解决了问题

brew uninstall --force brew-cask
brew uninstall --force opencv
brew doctor
brew tap homebrew/science
brew install opencv

---

您是否尝试升级您的libpng？是的，问题仍然存在最新的libpng位于何处？是

/usr/local/opt/libpng/lib/libpng16.16.dylib

还是其他地方？也许你有两个版本，但它找到了错误的版本。