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Parses command-line arguments for a contract validity analysis tool that processes FileCloud documents with configurable options for paths, concurrency, output, and file filtering.

Purpose

This function sets up and parses command-line arguments for a contract analysis application. It provides a comprehensive CLI interface allowing users to customize configuration file paths, FileCloud document locations, processing concurrency, output directories, logging verbosity, dry-run mode, file extension filtering, and file processing limits. The function uses argparse to create a user-friendly interface with help text and usage examples.

Source Code

def parse_arguments():
    """Parse command line arguments."""
    parser = argparse.ArgumentParser(
        description='Analyze contract validity from FileCloud documents',
        formatter_class=argparse.RawDescriptionHelpFormatter,
        epilog="""
Examples:
  python main.py                              # Run with default configuration
  python main.py --config custom_config.yaml # Use custom configuration file
  python main.py --path "/custom/path"        # Override FileCloud path
  python main.py --concurrent 5              # Use 5 concurrent threads
  python main.py --output-dir ./results      # Save results to custom directory
        """
    )
    
    parser.add_argument(
        '--config', '-c',
        help='Path to configuration file',
        default=None
    )
    
    parser.add_argument(
        '--path', '-p',
        help='FileCloud path to analyze (overrides config)',
        default=None
    )
    
    parser.add_argument(
        '--concurrent', '-t',
        help='Number of concurrent processing threads',
        type=int,
        default=3
    )
    
    parser.add_argument(
        '--output-dir', '-o',
        help='Output directory for results',
        default=None
    )
    
    parser.add_argument(
        '--verbose', '-v',
        help='Enable verbose logging',
        action='store_true'
    )
    
    parser.add_argument(
        '--dry-run',
        help='Show what would be analyzed without actually processing',
        action='store_true'
    )
    
    parser.add_argument(
        '--extensions',
        help='File extensions to analyze (comma-separated)',
        default='.pdf,.doc,.docx'
    )
    
    parser.add_argument(
        '--max-files',
        help='Maximum number of files to process (for testing)',
        type=int,
        default=None
    )
    
    return parser.parse_args()

Return Value

Returns an argparse.Namespace object containing parsed command-line arguments with the following attributes: config (str or None) - path to configuration file, path (str or None) - FileCloud path to analyze, concurrent (int, default 3) - number of concurrent threads, output_dir (str or None) - output directory path, verbose (bool) - verbose logging flag, dry_run (bool) - dry-run mode flag, extensions (str, default '.pdf,.doc,.docx') - comma-separated file extensions, max_files (int or None) - maximum files to process

Dependencies

• argparse

Required Imports

import argparse

Usage Example

import argparse

def parse_arguments():
    parser = argparse.ArgumentParser(
        description='Analyze contract validity from FileCloud documents',
        formatter_class=argparse.RawDescriptionHelpFormatter,
        epilog="""
Examples:
  python main.py                              # Run with default configuration
  python main.py --config custom_config.yaml # Use custom configuration file
  python main.py --path "/custom/path"        # Override FileCloud path
  python main.py --concurrent 5              # Use 5 concurrent threads
  python main.py --output-dir ./results      # Save results to custom directory
        """
    )
    parser.add_argument('--config', '-c', help='Path to configuration file', default=None)
    parser.add_argument('--path', '-p', help='FileCloud path to analyze (overrides config)', default=None)
    parser.add_argument('--concurrent', '-t', help='Number of concurrent processing threads', type=int, default=3)
    parser.add_argument('--output-dir', '-o', help='Output directory for results', default=None)
    parser.add_argument('--verbose', '-v', help='Enable verbose logging', action='store_true')
    parser.add_argument('--dry-run', help='Show what would be analyzed without actually processing', action='store_true')
    parser.add_argument('--extensions', help='File extensions to analyze (comma-separated)', default='.pdf,.doc,.docx')
    parser.add_argument('--max-files', help='Maximum number of files to process (for testing)', type=int, default=None)
    return parser.parse_args()

# Usage in main script
if __name__ == '__main__':
    args = parse_arguments()
    print(f"Config file: {args.config}")
    print(f"FileCloud path: {args.path}")
    print(f"Concurrent threads: {args.concurrent}")
    print(f"Output directory: {args.output_dir}")
    print(f"Verbose mode: {args.verbose}")
    print(f"Dry run: {args.dry_run}")
    print(f"Extensions: {args.extensions}")
    print(f"Max files: {args.max_files}")

Best Practices

• This function should be called once at the start of the main script to parse command-line arguments
• The returned Namespace object should be validated before use, especially for file paths and numeric values
• Consider wrapping the call in a try-except block to handle argparse.ArgumentError gracefully
• The extensions argument returns a string; split by comma to get individual extensions: args.extensions.split(',')
• Default values are provided for most arguments, making all options truly optional
• The --dry-run flag should be checked before performing any actual file processing or API calls
• The --max-files option is intended for testing and should be documented as such in production use
• Verbose mode should be used to configure logging levels in the application
• The concurrent threads value should be validated against system resources before use

Tags

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