Every time I open some files they....

Every time I open some files they come up then disaper very fast how do I keep them up I’m new to the panda 3d

the Panda3D will find you if you want it to

Just an educated guess.

If you had no python installation before you installed panda
and if you click on panda .py file from the Windows explorer,
you will see only a black windows for half a second and nothing happen.

Short solution is to open a command prompt in the folder of the py file.
(right click on folder name and choose open command prompt here)
Then in the command prompt type ppython filename.py and you will see the panda3D in action…