fix most "scripts"

related: #4754

electrum/util.py

@@ -278,7 +278,7 @@ class DaemonThread(threading.Thread, PrintError):
         self.print_error("stopped")
 
 
-verbosity = '*'
+verbosity = ''
 def set_verbosity(filters: Union[str, bool]):
     global verbosity
     if type(filters) is bool:  # backwards compat
@@ -983,3 +983,26 @@ class NetworkJobOnDefaultServer(PrintError):
         s = self.interface.session
         assert s is not None
         return s
+
+
+def create_and_start_event_loop() -> Tuple[asyncio.AbstractEventLoop,
+                                           asyncio.Future,
+                                           threading.Thread]:
+    def on_exception(loop, context):
+        """Suppress spurious messages it appears we cannot control."""
+        SUPPRESS_MESSAGE_REGEX = re.compile('SSL handshake|Fatal read error on|'
+                                            'SSL error in data received')
+        message = context.get('message')
+        if message and SUPPRESS_MESSAGE_REGEX.match(message):
+            return
+        loop.default_exception_handler(context)
+
+    loop = asyncio.get_event_loop()
+    loop.set_exception_handler(on_exception)
+    # loop.set_debug(1)
+    stopping_fut = asyncio.Future()
+    loop_thread = threading.Thread(target=loop.run_until_complete,
+                                         args=(stopping_fut,),
+                                         name='EventLoop')
+    loop_thread.start()
+    return loop, stopping_fut, loop_thread