[Fix] Prevent Python Firecrawl logger from interfering with loggers in client applications (#613)

* Prevent firecrawl logger from interfering with other loggers

* Always check if logger has handlers

---------

Co-authored-by: Gergő Móricz <mo.geryy@gmail.com>

apps/python-sdk/firecrawl/__init__.py

@@ -11,7 +11,7 @@ For more information visit https://github.com/firecrawl/
 import logging
 import os
 
-from .firecrawl import FirecrawlApp
+from .firecrawl import FirecrawlApp # noqa
 
 __version__ = "1.4.0"
 
@@ -19,24 +19,46 @@ __version__ = "1.4.0"
 logger: logging.Logger = logging.getLogger("firecrawl")
 
 
-def _basic_config() -> None:
-    """Set up basic configuration for logging with a specific format and date format."""
+def _configure_logger() -> None:
+    """
+    Configure the firecrawl logger for console output.
+
+    The function attaches a handler for console output with a specific format and date
+    format to the firecrawl logger.
+    """
     try:
-        logging.basicConfig(
-            format="[%(asctime)s - %(name)s:%(lineno)d - %(levelname)s] %(message)s",
+        # Create the formatter
+        formatter = logging.Formatter(
+            "[%(asctime)s - %(name)s:%(lineno)d - %(levelname)s] %(message)s",
             datefmt="%Y-%m-%d %H:%M:%S",
         )
+
+        # Create the console handler and set the formatter
+        console_handler = logging.StreamHandler()
+        console_handler.setFormatter(formatter)
+
+        # Add the console handler to the firecrawl logger
+        logger.addHandler(console_handler)
     except Exception as e:
         logger.error("Failed to configure logging: %s", e)
 
 
 def setup_logging() -> None:
     """Set up logging based on the FIRECRAWL_LOGGING_LEVEL environment variable."""
-    env = os.environ.get(
-        "FIRECRAWL_LOGGING_LEVEL", "INFO"
-    ).upper()  # Default to 'INFO' level
-    _basic_config()
+    # Check if the firecrawl logger already has a handler
+    if logger.hasHandlers():
+        return # To prevent duplicate logging
 
+    # Check if the FIRECRAWL_LOGGING_LEVEL environment variable is set
+    if not (env := os.getenv("FIRECRAWL_LOGGING_LEVEL", "").upper()):
+        # Attach a no-op handler to prevent warnings about no handlers
+        logger.addHandler(logging.NullHandler()) 
+        return
+
+    # Attach the console handler to the firecrawl logger
+    _configure_logger()
+
+    # Set the logging level based on the FIRECRAWL_LOGGING_LEVEL environment variable
     if env == "DEBUG":
         logger.setLevel(logging.DEBUG)
     elif env == "INFO":