为什么TextBlob 0.3.7有时会生成小于-1的情感极性

Question

I recently started using the TextBlob package for Python (version 0.3.7). According to the documentation, the .sentiment method returns a tuple of sentiment polarity and subjectivity, with the defined range for polarity being between -1 and +1 .

However, this code gives me a polarity value of -1.24 .

Is this a known bug or is there anything wrong with my usage of the code?

from text.blob import TextBlob
MyText = '''
tired of nbc universal. got 2 of the 3 periods of tonight's game and 62 of the 78 laps of the f1 race in monaco. stop the pregame crap and fill it with the event you morons!!!!!!
'''
text = TextBlob(MyText)
print text.sentiment

Answer 1

This is a known bug in 0.3.7. There have been significant updates since version 0.3.7, including improved sentiment analysis, so I would update to the latest version (0.5.2 as of this writing). This can be done with

pip install -U textblob