升級Python包dateutil：找不到版本

Question

我試圖將從2.5.3升級到最新版本2.6.0與pip install dateutil --upgrade，但得到了問題Could not find a version。

$ pip install dateutil --upgrade 
Collecting dateutil 
    Could not find a version that satisfies the requirement dateutil (from versions:) 
No matching distribution found for dateutil 

我查了帖子Could not find a version that satisfies the requirement。運行pip freeze | grep dateutil得到，

$ pip freeze | grep dateutil 
python-dateutil==2.5.3 

我怎麼知道哪個版本滿足我的機器？是否有可能將dateutil升級到最新版本？

Answer 1

這是

pip install python-dateutil --upgrade