Python使用eval强制转换字符串为字典时报错：File "<string>", line 1, in <module> NameError: name 'nan' is not defined

　　文本中保存的内容为：

{
    ‘QQQ‘: [0.067, 0.167, 0.2, 0.033, 0.233, 0.267, 0.1, 0.133], 
    ‘TTT‘: [0.5, 0.375, 0.25, 0.3, 0.6, 0.333, 0.857, 0.636, 0.667, 0.556]
}

　　　用eval转换为字符串时报错：

File "test.py", line 43, in d1
    data = eval(infile.readline())
  File "<string>", line 1, in <module>
NameError: name ‘nan‘ is not defined

　　解决：

globals = {
    ‘nan‘: 0   
}

# -----------
data = eval(infile.readline(), globals)

　　参考资料：

文章来自：http://www.cnblogs.com/zifenger/p/3941751.html