This is a Python3 example I got from https://www.kite.com/python/answers/how-to-check-if-a-network-port-is-open-in-python
import socket
a_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
port = 8080
location = ("127.0.0.1", port)
check = a_socket.connect_ex(location)
if check == 0:
print("Port is open")
else:
print("Port is not open")
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solved Check If Port is Open in Python3?