How to log the Exception message using by logging module?

In the context of Python programming language, to handle the exceptions and log their message in Python programming language, you can use the logging module. The logging module can provide a flexible framework for emitting log messages from Python programs. You can configure different log handles and formats to customize how log messages are displayed and stored.

Here is the updated code with the detailed technical terms and a long example:-

Import the logging module.

Configuration of the logging setting.

Iterate over the data source.

Use a try block to handle potential exceptions during the data processing.

In the except block, you can retrieve the exception message and log it by using the logging module.

Import logging

# Step 1: Import the logging module
# Step 2: Configure logging settings
Logging.basicConfig(
    Level=logging.ERROR,                 # Set the logging level to ERROR
    Format=’%(asctime)s - %(levelname)s - %(message)s’,  # Define the log format
    Handlers=[
        Logging.FileHandler(“error.log”),   # Log output to a file named “error.log”
        Logging.StreamHandler()             # Log output to the console
    ]
)
# List of data sources
Data_sources = [“source1”, “source2”, “source3”]
# Step 3: Iterate over the data sources
For source in data_sources:
    Try:
        # Step 4: Simulating data processing
        If source == “source2”:
            Raise ValueError(“Invalid data from source2”)
        Print(f”Processed data from {source}”)
    Except Exception as e:
        # Step 5: Retrieve and log the exception message
        Exception_message = str€  # Retrieve the exception message from the exception object
        Logging.error(f”Error processing data from {source}: {exception_message}”)

Here is an example given below of how you can handle exceptions and log their message in Java by using the java.util.logging package. This would include detailed comments to explain each step:-

Import java.io.IOException;
Import java.util.logging.FileHandler;
Import java.util.logging.Level;
Import java.util.logging.Logger;
Import java.util.logging.SimpleFormatter;

Public class DataProcessor {
    // Step 1: Create a Logger instance
    Private static final Logger logger = Logger.getLogger(DataProcessor.class.getName());
    Public static void main(String[] args) {
        // Step 2: Configure the Logger
        configureLogger();
        // List of data sources
        String[] dataSources = {“source1”, “source2”, “source3”};
        // Step 3: Iterate over the data sources
        For (String source : dataSources) {
            Try {
                // Step 4: Simulate data processing
                processData(source);
                System.out.println(“Processed data from “ + source);
            } catch (Exception e) {
                // Step 5: Retrieve and log the exception message
                String exceptionMessage = e.getMessage(); // Retrieve the exception message
                Logger.log(Level.SEVERE, “Error processing data from “ + source + “: “ + exceptionMessage, e);
            }
        }
    }
    Private static void configureLogger() {
        Try {
            // Step 2.1: Create a FileHandler to log messages to a file
            FileHandler fileHandler = new FileHandler(“error.log”, true);
            // Step 2.2: Set a simple formatter for the FileHandler
            fileHandler.setFormatter(new SimpleFormatter());
            // Step 2.3: Add the FileHandler to the Logger
            Logger.addHandler(fileHandler);
            // Step 2.4: Set the logging level to SEVERE
            Logger.setLevel(Level.SEVERE);
        } catch (IOException e) {
            // Handle potential IOException from FileHandler
            e.printStackTrace();
        }
    }
    Private static void processData(String source) throws Exception {
        // Simulate data processing
        If (“source2”.equals(source)) {
            Throw new ValueError(“Invalid data from source2”);
        }
    }
    // Custom exception class to simulate ValueError
    Static class ValueError extends Exception {
        Public ValueError(String message) {
            Super(message);
        }
    }
}