Access memory address in python

My question is: How can I read the content of a memory address in python? example: ptr = id(7) I want to read the content of memory pointed by ptr. Thanks.

Have a look at ctypes.string_at. Here's an example. It dumps the raw data structure of a CPython integer.

from ctypes import string_at
from sys import getsizeof

a = 0x7fff 
print(string_at(id(a),getsizeof(a)).hex())

Output:

0200000000000000d00fbeaafe7f00000100000000000000ff7f0000

Note that this works with the CPython implementation because id() happens to return the virtual memory address of a Python object, but this is not guaranteed by the Python language itself.

In Python, you don't generally use pointers to access memory unless you're interfacing with a C application. If that is what you need, have a look at the ctypes module for the accessor functions.

"I want to read the content of memory pointed by ptr"

Write code in C. Use the code from Python. http://docs.python.org/extending/extending.html