Does pyhton consists of just a black screen?, Can not it be made an executable.exe file with forms & toolboxes ?

Answer 1

If you just want a program that has a GUI, see tkinter. If you want to try and implement simple graphics, try pygame.

Answer 2

You can convert py files into exe files. If you have python on your computer, install auto-py-to-exe with pip. You can then convert your python programs.

Answer 3

The "black screen" is in fact the console of your computer. You can change the output:
import sys
sys.stdout="Filename.txt"
print("Hello World!")

"Hello World" was printed in the file!