using is not to include timeout=0w!

Author: Your Name

micropython/umqtt.simple/umqtt/simple.py

@@ -62,7 +62,7 @@ def set_last_will(self, topic, msg, retain=False, qos=0):
 
     def connect(self, clean_session=True, timeout=None):
         self.sock = socket.socket()
-        if timeout:
+        if timeout is not None:
             self.sock.settimeout(timeout)
         addr = socket.getaddrinfo(self.server, self.port)[0][-1]
         self.sock.connect(addr)