Added logger.

rstat_tool/logger_setup.py

@@ -0,0 +1,47 @@
+# rstat_tool/logger_setup.py
+
+import logging
+import sys
+
+# Get the root logger
+logger = logging.getLogger("rstat_app")
+logger.setLevel(logging.INFO) # Set the minimum level of messages to handle
+
+# Prevent the logger from propagating messages to the parent (root) logger
+logger.propagate = False
+
+# Only add handlers if they haven't been added before
+# This prevents duplicate log messages if this function is called multiple times.
+if not logger.handlers:
+    # --- Console Handler ---
+    # This handler prints logs to the standard output (your terminal)
+    console_handler = logging.StreamHandler(sys.stdout)
+    console_handler.setLevel(logging.INFO)
+    # A simple formatter for the console
+    console_formatter = logging.Formatter('%(message)s')
+    console_handler.setFormatter(console_formatter)
+    logger.addHandler(console_handler)
+
+    # --- File Handler ---
+    # This handler writes logs to a file
+    # 'a' stands for append mode
+    file_handler = logging.FileHandler("rstat.log", mode='a')
+    file_handler.setLevel(logging.INFO)
+    # A more detailed formatter for the file, including timestamp and log level
+    file_formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
+    file_handler.setFormatter(file_formatter)
+    logger.addHandler(file_handler)
+
+# Get the logger used by the yfinance library
+yfinance_logger = logging.getLogger("yfinance")
+# Set its level to capture warnings and errors
+yfinance_logger.setLevel(logging.WARNING)
+# Add our existing handlers to it. This tells yfinance's logger
+# to send its messages to our console and our log file.
+if not yfinance_logger.handlers:
+    yfinance_logger.addHandler(console_handler)
+    yfinance_logger.addHandler(file_handler)
+
+def get_logger():
+    """A simple function to get our configured logger."""
+    return logger