我刚刚将Python3解释器添加到Sublime，并且以下代码停止工作：

for directory in directoryList:
    fileList = os.listdir(directory)
    for filename in fileList:
        filename = os.path.join(directory, filename)
        currentFile = open(filename, 'rt')
        for line in currentFile:               ##Here comes the exception.
            currentLine = line.split(' ')
            for word in currentLine:
                if word.lower() not in bigBagOfWords:
                    bigBagOfWords.append(word.lower())
        currentFile.close()

我收到以下异常：

  File "/Users/Kuba/Desktop/DictionaryCreator.py", line 11, in <module>
    for line in currentFile:
  File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xcc in position 305: ordinal not in range(128)

我发现这很奇怪，因为据我所知Python3应该在任何地方都支持utf-8。而且，相同的精确代码在Python2.7上可以正常工作。我已经读过有关添加环境变量的信息PYTHONIOENCODING，但是我尝试了-
无济于事（但是，在OS X Mavericks中添加环境变量似乎并不容易，所以也许我在添加变量时做错了什么？ /etc/launchd.conf）