Python: is thread still running

You must start the thread by using threading.

id1 = threading.Thread(target = my_function)
id1.start()

And as of above if you don't have any args to mention you can just leave it blank.

To check your thread is alive or not you can use is_alive()

if id1.is_alive():
   print("Is Alive")
else:
   print("Dead")

Note: isAlive() is deprecated instead use is_alive()as per the python docs.

Python Documentation

The key is to start the thread using threading, not thread:

t1 = threading.Thread(target=my_function, args=())
t1.start()

Then use

z = t1.is_alive()
# Changed from t1.isAlive() based on comment. I guess it would depend on your version.

l = threading.enumerate()

You can also use join():

t1 = threading.Thread(target=my_function, args=())
t1.start()
t1.join()
# Will only get to here once t1 has returned.

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