可选的虚拟环境创建错误

Question

$dh = opendir("ftp://10.200.1.1/rt");
while($filename = readdir($dh))
{
echo " ".$filename."\n <br>";
?>

-是键入"virtualenv" is not recognized as an internal or external command, operable program or batch file.

后显示的错误消息

我正在尝试为Django项目创建另一个虚拟环境