Python UnicodeWarning:Unicode相等比较无法将两个参数转换为Unicode MacOSX

我在MacOSLion，Python2.7上遇到了这个错误

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> /usr/local/lib/python2.7/site-packages/matplotlib/text.py:52: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal if rotation in ('horizontal', None):

 /usr/local/lib/python2.7/site-packages/matplotlib/text.py:54: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal elif rotation == 'vertical':

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> /usr/local/lib/python2.7/site-packages/matplotlib/text.py:52: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal if rotation in ('horizontal', None):

 /usr/local/lib/python2.7/site-packages/matplotlib/text.py:54: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal elif rotation == 'vertical':

我的代码

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这些只是警告，代码仍然应该产生正确的结果。这已在master Hi@tcaswell上修复，我如何将这些更改应用于我的文件，我是否应该进行提交？？或者我应该将这些行复制到我的文件中？？我通过自制安装了python。谢谢