can virtualenv run without the main installation?

[smith jack]

env create by virtualenv will refer to the main env, how did it find
the main env, is there any configuration files, if yes, where is it?

2011/8/6 smith jack <thinke365 at gmail.com>:
> At first i have a python environment, after using virtualenv test
> command, a new environment named test is created, in that directory
> have some of the executable commands
> such as python.exe, so can i program without the main installation of python?
>