Don't add more then one stderr handler

piker/log.py

@@ -72,21 +72,21 @@ def get_console_log(level: str = None, name: str = None) -> logging.Logger:
     if level:
         log.setLevel(level.upper() if not isinstance(level, int) else level)
 
-    if not any(
+    for handler in log.handlers:
-        handler.stream == sys.stderr for handler in log.handlers
+        if getattr(handler, 'stream', None) and handler.stream == sys.stderr:
-        if getattr(handler, 'stream', None)
+            break
-    ):
+    else:
         handler = logging.StreamHandler()
 
-        formatter = colorlog.ColoredFormatter(
+    formatter = colorlog.ColoredFormatter(
-            LOG_FORMAT,
+        LOG_FORMAT,
-            datefmt=DATE_FORMAT,
+        datefmt=DATE_FORMAT,
-            log_colors=STD_PALETTE,
+        log_colors=STD_PALETTE,
-            secondary_log_colors=BOLD_PALETTE,
+        secondary_log_colors=BOLD_PALETTE,
-            style='{',
+        style='{',
-        )
+    )
-        handler.setFormatter(formatter)
+    handler.setFormatter(formatter)
-        log.addHandler(handler)
+    log.addHandler(handler)
 
     return log