sublime text 2在python3.3下输出中文字符的问题

在python2.7下，我在一个文件中输入了点中文字符，然后保存为txt格式文件，之后读取输入至控制台没有报错。但是切换至python3.3下，读取同样一个文件，就报错，提示：
/Users/nintenace/Desktop/learn_python
Traceback (most recent call last):
File "/Users/nintenace/Desktop/learn_python/test.py", line 7, in
print(str)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-2: ordinal not in range(128)
[Finished in 0.0s with exit code 1]

代码如下：
with open('ttt.txt','r',encoding='utf-8') as ttt: str = ttt.readline() print(str)

很奇怪为什么会这样，我是在mac下操作的，望高手解答！

---

http://stackoverflow.com/a/15174760

Preferences -> Browse Packages -> Python -> Python.sublime-build

加上一句 env，比如这样：

{
    "cmd": ["/usr/local/bin/python3.3", "-u", "$file"],
    "file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)",
    "selector": "source.python",
    "env": {"LANG": "en_US.UTF-8"}
}

注意 selector 最后的逗号！