custom_thread.py

from threading import Thread

class CustomThread(Thread):
    """
    Custom thread class that permits to get the return value of a function.
    Based on https://superfastpython.com/thread-return-values/#Need_to_Return_Values_From_a_Thread
    """

    def __init__(self, target: callable, args: list) -> None:
        """
        Constructor

        Parameters
        ------------
        func: function to be executed in a new thread
        params: parameters of the function
        """

        # execute the base constructor
        Thread.__init__(self)

        # set a default value
        self.value = None
        self.func = target
        self.params = args
 
    def run(self) -> None:
        """	
        Run the thread, saving the return value in an instance variable
        """
        # store data in an instance variable
        self.value = self.func(**self.params)