kingkybel-pyflashlogger 1.0.2

Advanced console logging with color support

kingkybel-pyflashlogger

Advanced console logging with color support and minimal configuration interface.

Features

• 🎨 Color-Coded Logging: Automatic ANSI color coding for different log levels
• 🏷️ Custom Log Levels: Support for custom log levels with configurable labels
• 🔄 Minimal Interface: Simple API for logging without complex setup
• 🌈 Special Color Support: Configurable colors for timestamps, process IDs, brackets, operators, etc.
• 📋 Field Ordering: Base class configurable field ordering (level, timestamp, pid, tid, message) for all log channels
• 💾 JSON Configuration: Save and load color/label configurations
• 🔗 Multiple Channels: Console and file logging implementations with unified configuration
• 🧪 Format Flexibility: Different formats for standard logs, commands, and std streams
• 📤 Output Formats: Multiple output formats (Human readable, JSON pretty, JSON lines) available to all channels
• ✅ Comprehensive Testing: Full test coverage including all new functionality

Installation

pip install kingkybel-pyflashlogger

Or from source:

git clone https://github.com/kingkybel/FlashLogger.git
cd FlashLogger
pip install -e .

Quick Start

from flashlogger import FlashLogger, ColorScheme, LogLevel

# Basic usage
logger = FlashLogger()
logger.log_info("This is an info message")
logger.log_warning("This is a warning")

# With custom colors
scheme = ColorScheme.default_color_scheme()
console_logger = FlashLogger(console=scheme)
console_logger.log_error("Colorized error message")

# Custom log levels
logger.log_custom0("Custom level message")

Advanced Usage

Color Configuration

from flashlogger import ColorScheme

# Load predefined schemes
color_scheme = ColorScheme(ColorScheme.Default.COLOR)
bw_scheme = ColorScheme(ColorScheme.Default.BLACK_AND_WHITE)

# Create custom scheme
custom_scheme = ColorScheme()
custom_scheme.warning_normal_foreground = Fore.RED
custom_scheme.warning_normal_background = Back.YELLOW

Field Ordering

# Customize log field display order
scheme.field_order = ["level", "timestamp", "message"]  # Omit pid/tid
logger = FlashLogger(console=scheme)

# Output: [WARNING] [2025-10-26 00:00:00.000] This is a message

Custom Labels

from flashlogger import LogLevel

# Define custom labels
LogLevel.set_str_repr(LogLevel.custom0, "NETWORK_IO")
LogLevel.set_str_repr(LogLevel.custom1, "DB_QUERY")

logger = FlashLogger()
logger.log_custom0("Network I/O operation")  # Shows as "NETWORK_IO"

Output Formats

from flashlogger import LogChannelConsole, OutputFormat

# Human readable (default)
human_channel = LogChannelConsole(minimum_log_level="INFO")

# JSON pretty printing
json_channel = LogChannelConsole(output_format=OutputFormat.JSON_PRETTY)

# JSON lines for streaming
lines_channel = LogChannelConsole(output_format="JSON_LINES")

# Example output comparison:
# Human: [2025-10-27 08:35:00.123] [INFO] [PID:1234|TID:5678] Operation completed
# JSON: {"timestamp": "2025-10-27 08:35:00.123", "level": "info", "message": "Operation completed", "pid": 1234, "tid": 5678}

Log Levels

• DEBUG: Debugging information
• INFO: General information
• WARNING: Warning conditions
• ERROR: Error conditions
• FATAL: Fatal errors
• CRITICAL: Critical conditions
• COMMAND: Command execution
• COMMAND_OUTPUT: Command stdout capture
• COMMAND_STDERR: Command stderr capture
• CUSTOM0-9: Custom user-defined levels

Configuration Files

FlashLogger includes default configuration files for color schemes and log level labels:

• color_scheme_color.json: Full color scheme
• color_scheme_bw.json: Black and white scheme
• log_levels_en.json: English log level labels
• log_levels_de.json: German log level labels

Channels

Console Channel

from flashlogger import LogChannelConsole

channel = LogChannelConsole(color_scheme=my_scheme, minimum_log_level="WARNING")
channel.do_log("ERROR", "This error will be logged")

File Channel

from flashlogger import LogChannelFile

channel = LogChannelFile(filename="app.log")
channel.do_log("INFO", "This goes to file")

Custom Channels

Extend LogChannelABC for custom logging destinations:

from flashlogger import LogChannelABC

class MyChannel(LogChannelABC):
    def do_log(self, log_level, *args, **kwargs):
        # Your custom logging logic
        pass

API Reference

FlashLogger

• log_debug(message): Log debug message
• log_info(message): Log info message
• log_warning(message): Log warning message
• log_error(message): Log error message
• log_fatal(message): Log fatal error
• log_custom0(message): Log custom level 0

ColorScheme

• Constructor: ColorScheme(default_scheme_or_path)
• Methods: save_to_json(path), set_level_color()

LogLevel

• Standard levels: DEBUG, INFO, WARNING, etc.
• Custom levels: CUSTOM0 through CUSTOM9
• Methods: set_str_repr(level, label), load_str_reprs_from_json(path)

License

GPLv2 - See the LICENSE file for details.

Contributing

Contributions welcome! Please open issues for bugs or feature requests.

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests if applicable
5. Submit a pull request