How to get an object in memory ? python pointers

Question

I don't know if this is possible but I'm trying to open an object from another script by i'ts place on the memory

This is my first script:

from time import sleep
myobj = 'Hi'

# i'm aware that this somehow is the position of the object on memory
myid = id(myobj)

print(myid)
# output: 140196737647120

sleep(3600)

how i could try to open it from a non related script? I tried with:


from ctypes import cast, py_object
jc = cast( 140196737647120 , py_object).value
# output: Segmentation fault (core dumped)

Also if there is some other easier way please suggest

Davis Herring · Accepted Answer · 2020-06-30 19:31:20Z

1

Virtual memory renders this impossible without altering Python to use shared memory (which is a lot harder to do safely than it sounds).

answered Jun 30, 2020 at 19:31

Davis Herring

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2 Comments

ikenas Over a year ago

Thanks for the answer, it did not solve the question but the information was good, at the end i found this gitlab.com/tenzing/shared-array , Thank you.

Davis Herring Over a year ago

@VasylYovdiy: It did answer the question, which to your credit acknowledged that the answer might be “you can’t”. I’m glad you found a library you could use; multiprocessing in the standard library also supports (some) such use cases.

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