reference_count
12345678910111213141516171819
import sys
a = [1,2,3]
print(hex(id(a)))
print(sys.getrefcount(a))
import ctypes
def ref_count(address: int):
return ctypes.c_long.from_address(address).value
print(ref_count(id(a)))
b= a
print(hex(id(b)))
print(ref_count(id(a)))
# interesting
b = None
print(id(b))
# keep the id of a and see what happen after a is pointing to other value
a_id = id(a)
a = None
print(ref_count(a_id))
print(ref_count(a_id))
Python
INFO