How do you share data between a parent and forked child process in Python

before we begin, ensure you have python installed on your system. you can download it from the official python website.
in python, you can create multiple processes to perform parallel or concurrent tasks. these processes can share data with each other using various interprocess communication mechanisms. we'll cover two common approaches:
in this example, we'll create a parent process that spawns a child process. the parent process will put data into a queue, and the child process will retrieve and process that data.
in this example, we define a child process function child_process that retrieves data from the queue until it receives a none sentinel value, at which point it exits. the parent process puts data into the queue and sends the none value to signal the child process to exit.
in this example, we'll create a parent process that spawns a child process. the parent process will increment a shared integer value, and the child process will decrement it.

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