： 康达工作正常。但是现在我得到以下信息：
$conda list:
EviornmentLocationNotfound: not a conda environment:C:/users/xxx/anaconda3
$conda --version:
conda 4.5.11:
$conda update numpy [or any package]:
PackageNotInstalledError :package not installed in prefix:
$conda install or info or search seem to work fine: