vaspy不能适配python2.7及其canopy环境

[YYangZiXin]

python2.7中类的继承语法有所改变，可能因此导致了大量类似‘ValueError: XDATCAR not exist. ’的错误。 现在canopy环境已更新为内置python2.7，希望可以更新您的vaspy，非常感谢。

[PytLab]

你好，vaspy是兼容py3和py2的，而且canopy也都做过测试。从你错误的信息来看，可能是你安装vaspy有误。如果方便的话可以将你的脚本和具体报错信息贴出来。

[YYangZiXin]

谢谢回复，之前的错误信息找不到了，现在错误变为了

`%run "D:\VASPy-master\scripts\md_viz\map.py"

ImportErrorTraceback (most recent call last)
D:\VASPy-master\scripts\md_viz\map.py in <module>()
      8 import matplotlib.patheffects as pe
      9 
---> 10 from vaspy.iter import XdatCar, AniFile
     11 from traj import get_trajectories
     12 
C:\Users\y7216\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\vaspy\iter.py in <module>()
     21     plt_installed = False
     22 
---> 23 from vaspy import VasPy, PY2
     24 from vaspy import LazyProperty
     25 from vaspy.atomco import PosCar, XyzFile
ImportError: cannot import name VasPy `

我想应该是因为vasyp安装错误，我安装的方法是在canopy的命令行中

`(User) D:\VASPy-master>pip install vaspy
Requirement already satisfied: vaspy in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages
Requirement already satisfied: scipy>=0.18.0 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from vaspy)
Requirement already satisfied: matplotlib>=1.5.2 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from vaspy)
Requirement already satisfied: numpy>=1.11.1 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from vaspy)
Requirement already satisfied: six>=1.10 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)
Requirement already satisfied: python-dateutil in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)
Requirement already satisfied: functools32 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)
Requirement already satisfied: pytz in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)
Requirement already satisfied: cycler>=0.10 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)
Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,>=1.5.6 in c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages (from matplotlib>=1.5.2->vaspy)`

之前按照您网页中的方法在（管理员）CMD中尝试安装时出错：

`C:\WINDOWS\system32>alias canopy='\Users\y7216\AppData\Local\Enthought\Canopy\edm\envs\User\python'
'alias' 不是内部或外部命令，也不是可运行的程序
或批处理文件。

在powerShell中尝试安装时出错：

PS C:\Users\y7216> alias canopy='\Users\y7216\AppData\Local\Enthought\Canopy\edm\envs\User\python'
alias : 此命令找不到匹配的别名，因为具有 name“canopy=\Users\y7216\AppData\Local\Enthought\Canopy\edm\envs\User\python
”的别名不存在。
所在位置 行:1 字符: 1
+ alias canopy='\Users\y7216\AppData\Local\Enthought\Canopy\edm\envs\Us ...
+ 
    + CategoryInfo          : ObjectNotFound: (canopy=\Users\y...nvs\User\python:String) [Get-Alias], ItemNotFoundExce
   ption
    + FullyQualifiedErrorId : ItemNotFoundException,Microsoft.PowerShell.Commands.GetAliasCommand

[YYangZiXin]

有时间解答一下吗？

[PytLab]

你好，根据你的跑错信息是vaspy未安装成功，我readme里面的alias是针对*nix平台的。不过在windows平台上直接使用canopy命令行中的pip是可以的，你可以查看下你本地c:\users\y7216\appdata\local\enthought\canopy\edm\envs\user\lib\site-packages中是否有vaspy

另外，你执行的时候也是在canopy中执行的吗？

[YYangZiXin]

该路径有vaspy。执行是在cannopy的Editor中打开并运行的。