Interpreter and running a .py file give different outputs

[PythonNPC]

I have written the following code which gives different output when saved as a .py file and run and on the Python interpreter.

a=100000
b=a
c=100000
print (id(a),id(b),id(c))

Output when saving as .py file and running through command prompt:
2122603390032 2122603390032 2122603390032

All memory addresses are same.


Output via interpreter:
2351093736464 2351093736464 2351093736304

Last memory address is different.


Why is this happening? I am on Python 3.7.4.
What are the differences when running on the interpreter and when running a .py file.