PyCharm and Python's id() function

Simple code run in PyCharm and in a terminal:

Terminal:

>>> a = 500
>>> b = 500
>>> print(id(a))
139745079475248
>>> print(id(b))
139745079475408

PyCharm:

print(id(a))

139708112895280

print(id(b))

139708112895280

Using Python 3.6. So in PyCharm objects with values greater than 256 have the same ID.

a is b in PyCharm reports True. In the terminal it's False.

I'm probably missing something here so i'd be grateful if someone can shine some light. Thanks!