import datetime
import re
import random  # Unused import

def get_current_time():
    """Get current time as ISO string - used function."""
    return datetime.datetime.now().isoformat()

def format_currency(amount, currency='USD'):
    """Format amount as currency string - used function."""
    symbols = {'USD': '$', 'EUR': '€', 'GBP': '£'}
    symbol = symbols.get(currency, '')
    return f"{symbol}{amount:.2f}"

def generate_random_token():
    """Generate random token - unused function."""
    import secrets
    return secrets.token_hex(16)

def validate_email(email):
    """Validate email format - unused function."""
    pattern = r'^[\w\.-]+@[\w\.-]+\.\w+$'
    return bool(re.match(pattern, email))

class DateUtils:
    """Date utility class - unused class."""
    
    @staticmethod
    def get_tomorrow():
        """Get tomorrow's date - unused method."""
        return datetime.datetime.now() + datetime.timedelta(days=1)
    
    @staticmethod
    def format_date(date, format_str='%Y-%m-%d'):
        """Format date - unused method."""
        return date.strftime(format_str)
