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The following code passes a list (varbinds) and it works fine.
t1 = threading.Thread(target = Main2_TrapToTxtDb, args = (varBinds,))
Now I need to pass another variable - vString along with this.
Please help with a simple code.
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Therefore, you have to put a comma, so it is interpreted as a tuple: (argument, ) . Since this tuple is meant to contain the arguments you pass to the thread's function, just put all the arguments in the tuple, as I wrote in the answer: (arg1, arg2, arg3, arg4) .
Example 1 - Thread Argument Passing long taskids[NUM_THREADS]; for(t=0; t<NUM_THREADS; t++) { taskids[t] = t; printf("Creating thread %ld\n", t); rc = pthread_create(&threads[t], NULL, PrintHello, (void *) taskids[t]); ... } See the source code.
You can only pass a single argument to the function that you are calling in the new thread. Create a struct to hold both of the values and send the address of the struct. Save this answer.
To recap, threading in Python allows multiple threads to be created within a single process, but due to GIL, none of them will ever run at the exact same time. Threading is still a very good option when it comes to running multiple I/O bound tasks concurrently.
The args parameter is a tuple, and allows you to pass many arguments to the target.
t1 = threading.Thread(target=Main2_TrapToTxtDb, args=(varBinds, otherVariable))
This is documented here:
threading.Thread(group=None, target=None, name=None, args=(), kwargs={})
This constructor should always be called with keyword arguments. Arguments are:
group should be None; reserved for future extension when a ThreadGroup class is implemented.
target is the callable object to be invoked by the run() method. Defaults to None, meaning nothing is called.
name is the thread name. By default, a unique name is constructed of the form “Thread-N” where N is a small decimal number.
args is the argument tuple for the target invocation. Defaults to ().
kwargs is a dictionary of keyword arguments for the target invocation. Defaults to {}.
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