id is the method you want to use: to convert it to hex:
hex(id(variable_here))
For instance:
x = 4
print hex(id(x))
Gave me:
0x9cf10c
Which is what you want, right?
(Fun fact, binding two variables to the same int may result in the same memory address being used.)
Try:
x = 4
y = 4
w = 9999
v = 9999
a = 12345678
b = 12345678
print hex(id(x))
print hex(id(y))
print hex(id(w))
print hex(id(v))
print hex(id(a))
print hex(id(b))
This gave me identical pairs, even for the large integers.