rewrite for robustness.

logger.py

@@ -0,0 +1,44 @@
+# @File   : logger.py
+# @Time   : 2026/04/12 22:18:00
+# @Author : SilverAg.L
+
+import logging
+
+try:
+    import colorlog
+    fmt_arr = [
+        "%(cyan)s%(asctime)s.%(msecs)03d%(reset)s",
+        "%(log_color)s%(levelname)-7s%(reset)s",
+        "%(blue)s%(message)s%(reset)s",
+    ]
+    fmt = colorlog.ColoredFormatter(
+        " | ".join(fmt_arr),
+        datefmt="%Y-%m-%d %H:%M:%S"
+    )
+except ImportError:
+    fmt = logging.Formatter(
+        "%(asctime)s.%(msecs)03d | %(levelname)-7s | %(message)s",
+        datefmt="%Y-%m-%d %H:%M:%S"
+    )
+
+fmt.default_msec_format = "%s.%03d"
+handler = logging.StreamHandler()
+handler.setFormatter(fmt)
+
+
+def get_logger(name=None):
+    logger = logging.getLogger(name or __name__)
+    if not logger.handlers:
+        logger.addHandler(handler)
+    logger.setLevel('DEBUG')
+    return logger
+
+
+def test_logger():
+    log1 = get_logger("test1")
+    _ = get_logger("test1")
+    log1.info("Should print once")
+
+
+if __name__ == "__main__":
+    test_logger()