问题描述
我在Windows 7上安装了Python2.6，并且刚刚安装了Python2.7.结果，我有了"C:\ Python26"和"C:\ Python27".
I had Python2.6 on my Windows 7 and I just installed Python2.7. As a result I have "C:\Python26" and "C:\Python27".
我的问题是系统仍然尝试使用旧版本.例如，如果键入Python --version，则会得到"Python 2.6.4".或者，如果我尝试安装"numpy"，它将找到旧版本，并且不允许我手动将其更改为新版本.
My problem is that system still tries to use the old version. For example if I type Python --version I get "Python 2.6.4". Or, if I try to install "numpy" it find the old version and does not allow me to manually change it to the new version.
我试图检查系统环境变量以找出是否有Python2.6(用Python2.7代替)，但是我没有找到类似的东西.
I tried to check system environment variables to find out if there is Python2.6 (to replace it by Python2.7) but I did not find anything like that.
推荐答案
您需要将Python路径更改为新版本.
You need to change Python path to the new version.
http://docs.python.org/using/windows.html#excursus环境设置变量
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