Method Name:
Process
Method Signature:
Process(group=None, target=None, name=None, args=(), kwargs={}, *, daemon=None))
Return Value:
Returns a Process object.
Method Overview:
- The Process() constructor creates a Process instance.
- By calling the start() method of this, instance the process is executed/introduced into the operating system.
- Any required parameters for the communication between the parent process and the child process are provided through args and kwargs.
- The process can be a normal process or a daemon process based on the Boolean value passed to the daemon named parameter.
Parameters:
group – This parameter exists to have compatibility with Threading.Thread class. The value passed should be None.
target – A callable object whose contents/instructions to be executed as a separate process.
Name - Name of the process. This is not a unique value across the list of running processes.
Args – Parameters passed for communication between the parent process and the child process. This is a tuple.
Kwargs - Parameters passed for communication between the parent process and the child process. This is a dictionary.
daemon – A Boolean value based on which the process is created as a Regular Process or a Daemon Process.
Example:
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import multiprocessing as multiproc
def procFunction(mq): mq.put("Message from child process")
if __name__ == "__main__": multiproc.set_start_method("spawn") mq = multiproc.Queue()
# Send the message queue as argument tuple for target invocation childProc = multiproc.Process(target=procFunction, args=(mq,)) childProc.start() childProc.join()
# print the message queue print(mq.get())
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Output:
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Message from child process |