mac上TK Framework double implementation

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在mac上实验matplotlib相关功能的时候，发现报以下错误：

objc[5431]: Class TKApplication is implemented in both/Users/sykeoh/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined.objc[5431]: Class TKMenu is implemented in both /Users/sykeoh/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined.objc[5431]: Class TKContentView is implemented in both /Users/sykeoh/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined.objc[5431]: Class TKWindow is implemented in both /Users/sykeoh/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined.Segmentation fault: 11

问题应该是由anaconda安装包引起的。经过一番google，最终通过google在stack overflow上找着了答案：

cd ~/anaconda/lib/python3.5/lib-dynload$ install_name_tool -change "/System/Library/Frameworks/Tk.framework/Versions/8.5/Tk" "@rpath/libtk8.5.dylib" _tkinter.so$ install_name_tool -change "/System/Library/Frameworks/Tcl.framework/Versions/8.5/Tcl" "@rpath/libtcl8.5.dylib" _tkinter.so

之前没有用过install_name_tool命令，顺便查一下这个命令的作用：
otool 和 install_name_tool 是 Xcode 自带的两个工具，提供了对库文件(.so,.dylib,etc..) 进行查看与修改的功能。完整的功能可以直接在 Terminal 运行查看。

参考文献：
1.http://stackoverflow.com/questions/35593602/tk-framework-double-implementation-issue 解决方案的stackoverflow，里面解释得很详细。
2.http://www.jianshu.com/p/193ba07dadcf install_name_tool的用法

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