当我第一次使用python virtualenv时，它有一个问题

这是我第一次尝试virtualenv，我得到了这个。我在网上搜索过，但我能找到适合我的答案。
我目前正在运行： Mac OS:10.12
问题是：

fangyuxsMacBook:~ fANgyUXIn$ virtualenv env
Using base prefix '/Users/fANgyUXIn/anaconda'
New python executable in /Users/fANgyUXIn/env/bin/python
dyld: Library not loaded: @rpath/libpython3.5m.dylib
Referenced from: /Users/fANgyUXIn/env/bin/python
Reason: image not found
ERROR: The executable /Users/fANgyUXIn/env/bin/python is not functioning
ERROR: It thinks sys.prefix is '/Users/fANgyUXIn' (should be   '/Users/fANgyUXIn/env')
ERROR: virtualenv is not compatible with this system or executable

谢谢大家!