Pass variable script return twice output problem

[Faruk]

Hello guys. I write two python code and I can pass variable two scrpit but I have some problem. My scrpits this:

script1.py

x='a'
import script2

script2.py

import script1
import time

print "second script start"
print script1.x
print "secon script end"

When I ran script2.py result this:

Output:
 second script start
 a
 second script end
 second script start
 a
 second script end

Why script2.py return result twice. How can i fix twice run problem? Thanks