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hermes-agent/run_agent.py
2025-11-17 18:35:36 -05:00

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#!/usr/bin/env python3
"""
AI Agent Runner with Tool Calling
This module provides a clean, standalone agent that can execute AI models
with tool calling capabilities. It handles the conversation loop, tool execution,
and response management.
Features:
- Automatic tool calling loop until completion
- Configurable model parameters
- Error handling and recovery
- Message history management
- Support for multiple model providers
Usage:
from run_agent import AIAgent
agent = AIAgent(base_url="http://localhost:30000/v1", model="claude-opus-4-20250514")
response = agent.run_conversation("Tell me about the latest Python updates")
"""
import json
import logging
import os
import time
from typing import List, Dict, Any, Optional
from openai import OpenAI
import fire
from datetime import datetime
from pathlib import Path
# Load environment variables from .env file
from dotenv import load_dotenv
# Load .env file if it exists
env_path = Path(__file__).parent / '.env'
if env_path.exists():
load_dotenv(dotenv_path=env_path)
print(f"✅ Loaded environment variables from {env_path}")
else:
print(f" No .env file found at {env_path}. Using system environment variables.")
# Import our tool system
from model_tools import get_tool_definitions, handle_function_call, check_toolset_requirements
from tools.terminal_tool import cleanup_vm
class AIAgent:
"""
AI Agent with tool calling capabilities.
This class manages the conversation flow, tool execution, and response handling
for AI models that support function calling.
"""
def __init__(
self,
base_url: str = None,
api_key: str = None,
model: str = "gpt-4",
max_iterations: int = 10,
tool_delay: float = 1.0,
enabled_toolsets: List[str] = None,
disabled_toolsets: List[str] = None,
save_trajectories: bool = False,
verbose_logging: bool = False,
ephemeral_system_prompt: str = None,
log_prefix_chars: int = 100,
):
"""
Initialize the AI Agent.
Args:
base_url (str): Base URL for the model API (optional)
api_key (str): API key for authentication (optional, uses env var if not provided)
model (str): Model name to use (default: "gpt-4")
max_iterations (int): Maximum number of tool calling iterations (default: 10)
tool_delay (float): Delay between tool calls in seconds (default: 1.0)
enabled_toolsets (List[str]): Only enable tools from these toolsets (optional)
disabled_toolsets (List[str]): Disable tools from these toolsets (optional)
save_trajectories (bool): Whether to save conversation trajectories to JSONL files (default: False)
verbose_logging (bool): Enable verbose logging for debugging (default: False)
ephemeral_system_prompt (str): System prompt used during agent execution but NOT saved to trajectories (optional)
log_prefix_chars (int): Number of characters to show in log previews for tool calls/responses (default: 20)
"""
self.model = model
self.max_iterations = max_iterations
self.tool_delay = tool_delay
self.save_trajectories = save_trajectories
self.verbose_logging = verbose_logging
self.ephemeral_system_prompt = ephemeral_system_prompt
self.log_prefix_chars = log_prefix_chars
# Store toolset filtering options
self.enabled_toolsets = enabled_toolsets
self.disabled_toolsets = disabled_toolsets
# Configure logging
if self.verbose_logging:
logging.basicConfig(
level=logging.DEBUG,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
datefmt='%H:%M:%S'
)
# Keep OpenAI and httpx at INFO level to avoid massive base64 logs
# Even in verbose mode, we don't want to see full request/response bodies
logging.getLogger('openai').setLevel(logging.INFO)
logging.getLogger('httpx').setLevel(logging.WARNING)
print("🔍 Verbose logging enabled (OpenAI/httpx request bodies suppressed)")
else:
# Set logging to INFO level for important messages only
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(levelname)s - %(message)s',
datefmt='%H:%M:%S'
)
# Reduce OpenAI client logging
logging.getLogger('openai').setLevel(logging.WARNING)
logging.getLogger('httpx').setLevel(logging.WARNING)
# Initialize OpenAI client
client_kwargs = {}
if base_url:
client_kwargs["base_url"] = base_url
if api_key:
client_kwargs["api_key"] = api_key
else:
client_kwargs["api_key"] = os.getenv("ANTHROPIC_API_KEY", "dummy-key")
try:
self.client = OpenAI(**client_kwargs)
print(f"🤖 AI Agent initialized with model: {self.model}")
if base_url:
print(f"🔗 Using custom base URL: {base_url}")
except Exception as e:
raise RuntimeError(f"Failed to initialize OpenAI client: {e}")
# Get available tools with filtering
self.tools = get_tool_definitions(
enabled_toolsets=enabled_toolsets,
disabled_toolsets=disabled_toolsets
)
# Show tool configuration
if self.tools:
tool_names = [tool["function"]["name"] for tool in self.tools]
print(f"🛠️ Loaded {len(self.tools)} tools: {', '.join(tool_names)}")
# Show filtering info if applied
if enabled_toolsets:
print(f" ✅ Enabled toolsets: {', '.join(enabled_toolsets)}")
if disabled_toolsets:
print(f" ❌ Disabled toolsets: {', '.join(disabled_toolsets)}")
else:
print("🛠️ No tools loaded (all tools filtered out or unavailable)")
# Check tool requirements
if self.tools:
requirements = check_toolset_requirements()
missing_reqs = [name for name, available in requirements.items() if not available]
if missing_reqs:
print(f"⚠️ Some tools may not work due to missing requirements: {missing_reqs}")
# Show trajectory saving status
if self.save_trajectories:
print("📝 Trajectory saving enabled")
# Show ephemeral system prompt status
if self.ephemeral_system_prompt:
prompt_preview = self.ephemeral_system_prompt[:60] + "..." if len(self.ephemeral_system_prompt) > 60 else self.ephemeral_system_prompt
print(f"🔒 Ephemeral system prompt: '{prompt_preview}' (not saved to trajectories)")
def _format_tools_for_system_message(self) -> str:
"""
Format tool definitions for the system message in the trajectory format.
Returns:
str: JSON string representation of tool definitions
"""
if not self.tools:
return "[]"
# Convert tool definitions to the format expected in trajectories
formatted_tools = []
for tool in self.tools:
func = tool["function"]
formatted_tool = {
"name": func["name"],
"description": func.get("description", ""),
"parameters": func.get("parameters", {}),
"required": None # Match the format in the example
}
formatted_tools.append(formatted_tool)
return json.dumps(formatted_tools, ensure_ascii=False)
def _convert_to_trajectory_format(self, messages: List[Dict[str, Any]], user_query: str, completed: bool) -> List[Dict[str, Any]]:
"""
Convert internal message format to trajectory format for saving.
Args:
messages (List[Dict]): Internal message history
user_query (str): Original user query
completed (bool): Whether the conversation completed successfully
Returns:
List[Dict]: Messages in trajectory format
"""
trajectory = []
# Add system message with tool definitions
system_msg = (
"You are a function calling AI model. You are provided with function signatures within <tools> </tools> XML tags. "
"You may call one or more functions to assist with the user query. If available tools are not relevant in assisting "
"with user query, just respond in natural conversational language. Don't make assumptions about what values to plug "
"into functions. After calling & executing the functions, you will be provided with function results within "
"<tool_response> </tool_response> XML tags. Here are the available tools:\n"
f"<tools>\n{self._format_tools_for_system_message()}\n</tools>\n"
"For each function call return a JSON object, with the following pydantic model json schema for each:\n"
"{'title': 'FunctionCall', 'type': 'object', 'properties': {'name': {'title': 'Name', 'type': 'string'}, "
"'arguments': {'title': 'Arguments', 'type': 'object'}}, 'required': ['name', 'arguments']}\n"
"Each function call should be enclosed within <tool_call> </tool_call> XML tags.\n"
"Example:\n<tool_call>\n{'name': <function-name>,'arguments': <args-dict>}\n</tool_call>"
)
trajectory.append({
"from": "system",
"value": system_msg
})
# Add the initial user message
trajectory.append({
"from": "human",
"value": user_query
})
# Process remaining messages
i = 1 # Skip the first user message as we already added it
while i < len(messages):
msg = messages[i]
if msg["role"] == "assistant":
# Check if this message has tool calls
if "tool_calls" in msg and msg["tool_calls"]:
# Format assistant message with tool calls
content = ""
if msg.get("content") and msg["content"].strip():
content = msg["content"] + "\n"
# Add tool calls wrapped in XML tags
for tool_call in msg["tool_calls"]:
tool_call_json = {
"name": tool_call["function"]["name"],
"arguments": json.loads(tool_call["function"]["arguments"]) if isinstance(tool_call["function"]["arguments"], str) else tool_call["function"]["arguments"]
}
content += f"<tool_call>\n{json.dumps(tool_call_json, ensure_ascii=False)}\n</tool_call>\n"
trajectory.append({
"from": "gpt",
"value": content.rstrip()
})
# Collect all subsequent tool responses
tool_responses = []
j = i + 1
while j < len(messages) and messages[j]["role"] == "tool":
tool_msg = messages[j]
# Format tool response with XML tags
tool_response = f"<tool_response>\n"
# Try to parse tool content as JSON if it looks like JSON
tool_content = tool_msg["content"]
try:
if tool_content.strip().startswith(("{", "[")):
tool_content = json.loads(tool_content)
except (json.JSONDecodeError, AttributeError):
pass # Keep as string if not valid JSON
tool_response += json.dumps({
"tool_call_id": tool_msg.get("tool_call_id", ""),
"name": msg["tool_calls"][len(tool_responses)]["function"]["name"] if len(tool_responses) < len(msg["tool_calls"]) else "unknown",
"content": tool_content
}, ensure_ascii=False)
tool_response += "\n</tool_response>"
tool_responses.append(tool_response)
j += 1
# Add all tool responses as a single message
if tool_responses:
trajectory.append({
"from": "tool",
"value": "\n".join(tool_responses)
})
i = j - 1 # Skip the tool messages we just processed
else:
# Regular assistant message without tool calls
trajectory.append({
"from": "gpt",
"value": msg["content"] or ""
})
elif msg["role"] == "user":
trajectory.append({
"from": "human",
"value": msg["content"]
})
i += 1
return trajectory
def _save_trajectory(self, messages: List[Dict[str, Any]], user_query: str, completed: bool):
"""
Save conversation trajectory to JSONL file.
Args:
messages (List[Dict]): Complete message history
user_query (str): Original user query
completed (bool): Whether the conversation completed successfully
"""
if not self.save_trajectories:
return
# Convert messages to trajectory format
trajectory = self._convert_to_trajectory_format(messages, user_query, completed)
# Determine which file to save to
filename = "trajectory_samples.jsonl" if completed else "failed_trajectories.jsonl"
# Create trajectory entry
entry = {
"conversations": trajectory,
"timestamp": datetime.now().isoformat(),
"model": self.model,
"completed": completed
}
# Append to JSONL file
try:
with open(filename, "a", encoding="utf-8") as f:
f.write(json.dumps(entry, ensure_ascii=False) + "\n")
print(f"💾 Trajectory saved to {filename}")
except Exception as e:
print(f"⚠️ Failed to save trajectory: {e}")
def run_conversation(
self,
user_message: str,
system_message: str = None,
conversation_history: List[Dict[str, Any]] = None,
task_id: str = None
) -> Dict[str, Any]:
"""
Run a complete conversation with tool calling until completion.
Args:
user_message (str): The user's message/question
system_message (str): Custom system message (optional, overrides ephemeral_system_prompt if provided)
conversation_history (List[Dict]): Previous conversation messages (optional)
task_id (str): Unique identifier for this task to isolate VMs between concurrent tasks (optional, auto-generated if not provided)
Returns:
Dict: Complete conversation result with final response and message history
"""
# Generate unique task_id if not provided to isolate VMs between concurrent tasks
import uuid
effective_task_id = task_id or str(uuid.uuid4())
# Initialize conversation
messages = conversation_history or []
# Add user message
messages.append({
"role": "user",
"content": user_message
})
print(f"💬 Starting conversation: '{user_message[:60]}{'...' if len(user_message) > 60 else ''}'")
# Determine which system prompt to use for API calls (ephemeral)
# Priority: explicit system_message > ephemeral_system_prompt > None
active_system_prompt = system_message if system_message is not None else self.ephemeral_system_prompt
# Main conversation loop
api_call_count = 0
final_response = None
while api_call_count < self.max_iterations:
api_call_count += 1
print(f"\n🔄 Making OpenAI-compatible API call #{api_call_count}...")
# Log request details if verbose
if self.verbose_logging:
logging.debug(f"API Request - Model: {self.model}, Messages: {len(messages)}, Tools: {len(self.tools) if self.tools else 0}")
logging.debug(f"Last message role: {messages[-1]['role'] if messages else 'none'}")
api_start_time = time.time()
retry_count = 0
max_retries = 6 # Increased to allow longer backoff periods
while retry_count <= max_retries:
try:
# Prepare messages for API call
# If we have an ephemeral system prompt, prepend it to the messages
api_messages = messages.copy()
if active_system_prompt:
# Insert system message at the beginning
api_messages = [{"role": "system", "content": active_system_prompt}] + api_messages
# Make API call with tools
response = self.client.chat.completions.create(
model=self.model,
messages=api_messages,
tools=self.tools if self.tools else None,
timeout=300.0 # 5 minute timeout for long-running agent tasks
)
api_duration = time.time() - api_start_time
print(f"⏱️ OpenAI-compatible API call completed in {api_duration:.2f}s")
if self.verbose_logging:
logging.debug(f"API Response received - Usage: {response.usage if hasattr(response, 'usage') else 'N/A'}")
break # Success, exit retry loop
except Exception as api_error:
retry_count += 1
if retry_count > max_retries:
raise api_error
wait_time = min(2 ** retry_count, 60) # Exponential backoff: 2s, 4s, 8s, 16s, 32s, 60s, 60s
print(f"⚠️ OpenAI-compatible API call failed (attempt {retry_count}/{max_retries}): {str(api_error)[:100]}")
print(f"⏳ Retrying in {wait_time}s...")
logging.warning(f"API retry {retry_count}/{max_retries} after error: {api_error}")
time.sleep(wait_time)
try:
assistant_message = response.choices[0].message
# Handle assistant response
if assistant_message.content:
print(f"🤖 Assistant: {assistant_message.content[:100]}{'...' if len(assistant_message.content) > 100 else ''}")
# Check for tool calls
if assistant_message.tool_calls:
print(f"🔧 Processing {len(assistant_message.tool_calls)} tool call(s)...")
if self.verbose_logging:
for tc in assistant_message.tool_calls:
logging.debug(f"Tool call: {tc.function.name} with args: {tc.function.arguments[:200]}...")
# Add assistant message with tool calls to conversation
messages.append({
"role": "assistant",
"content": assistant_message.content,
"tool_calls": [
{
"id": tool_call.id,
"type": tool_call.type,
"function": {
"name": tool_call.function.name,
"arguments": tool_call.function.arguments
}
}
for tool_call in assistant_message.tool_calls
]
})
# Execute each tool call
for i, tool_call in enumerate(assistant_message.tool_calls, 1):
function_name = tool_call.function.name
try:
function_args = json.loads(tool_call.function.arguments)
except json.JSONDecodeError as e:
print(f"❌ Invalid JSON in tool call arguments: {e}")
function_args = {}
# Preview tool call arguments
args_str = json.dumps(function_args, ensure_ascii=False)
args_preview = args_str[:self.log_prefix_chars] + "..." if len(args_str) > self.log_prefix_chars else args_str
print(f" 📞 Tool {i}: {function_name}({list(function_args.keys())}) - {args_preview}")
tool_start_time = time.time()
# Execute the tool with task_id to isolate VMs between concurrent tasks
function_result = handle_function_call(function_name, function_args, effective_task_id)
tool_duration = time.time() - tool_start_time
result_preview = function_result[:200] if len(function_result) > 200 else function_result
if self.verbose_logging:
logging.debug(f"Tool {function_name} completed in {tool_duration:.2f}s")
logging.debug(f"Tool result preview: {result_preview}...")
# Add tool result to conversation
messages.append({
"role": "tool",
"content": function_result,
"tool_call_id": tool_call.id
})
# Preview tool response
response_preview = function_result[:self.log_prefix_chars] + "..." if len(function_result) > self.log_prefix_chars else function_result
print(f" ✅ Tool {i} completed in {tool_duration:.2f}s - {response_preview}")
# Delay between tool calls
if self.tool_delay > 0 and i < len(assistant_message.tool_calls):
time.sleep(self.tool_delay)
# Continue loop for next response
continue
else:
# No tool calls - this is the final response
final_response = assistant_message.content or ""
# Add final assistant message
messages.append({
"role": "assistant",
"content": final_response
})
print(f"🎉 Conversation completed after {api_call_count} OpenAI-compatible API call(s)")
break
except Exception as e:
error_msg = f"Error during OpenAI-compatible API call #{api_call_count}: {str(e)}"
print(f"{error_msg}")
if self.verbose_logging:
logging.exception("Detailed error information:")
# Add error to conversation and try to continue
messages.append({
"role": "assistant",
"content": f"I encountered an error: {error_msg}. Let me try a different approach."
})
# If we're near the limit, break to avoid infinite loops
if api_call_count >= self.max_iterations - 1:
final_response = f"I apologize, but I encountered repeated errors: {error_msg}"
break
# Handle max iterations reached
if api_call_count >= self.max_iterations:
print(f"⚠️ Reached maximum iterations ({self.max_iterations}). Stopping to prevent infinite loop.")
if final_response is None:
final_response = "I've reached the maximum number of iterations. Here's what I found so far."
# Determine if conversation completed successfully
completed = final_response is not None and api_call_count < self.max_iterations
# Save trajectory if enabled
self._save_trajectory(messages, user_message, completed)
# Clean up VM for this task after conversation completes
try:
cleanup_vm(effective_task_id)
except Exception as e:
if self.verbose_logging:
logging.warning(f"Failed to cleanup VM for task {effective_task_id}: {e}")
return {
"final_response": final_response,
"messages": messages,
"api_calls": api_call_count,
"completed": completed
}
def chat(self, message: str) -> str:
"""
Simple chat interface that returns just the final response.
Args:
message (str): User message
Returns:
str: Final assistant response
"""
result = self.run_conversation(message)
return result["final_response"]
def main(
query: str = None,
model: str = "claude-opus-4-20250514",
api_key: str = None,
base_url: str = "https://api.anthropic.com/v1/",
max_turns: int = 10,
enabled_toolsets: str = None,
disabled_toolsets: str = None,
list_tools: bool = False,
save_trajectories: bool = False,
verbose: bool = False,
log_prefix_chars: int = 20
):
"""
Main function for running the agent directly.
Args:
query (str): Natural language query for the agent. Defaults to Python 3.13 example.
model (str): Model name to use. Defaults to claude-opus-4-20250514.
api_key (str): API key for authentication. Uses ANTHROPIC_API_KEY env var if not provided.
base_url (str): Base URL for the model API. Defaults to https://api.anthropic.com/v1/
max_turns (int): Maximum number of API call iterations. Defaults to 10.
enabled_toolsets (str): Comma-separated list of toolsets to enable. Supports predefined
toolsets (e.g., "research", "development", "safe").
Multiple toolsets can be combined: "web,vision"
disabled_toolsets (str): Comma-separated list of toolsets to disable (e.g., "terminal")
list_tools (bool): Just list available tools and exit
save_trajectories (bool): Save conversation trajectories to JSONL files. Defaults to False.
verbose (bool): Enable verbose logging for debugging. Defaults to False.
log_prefix_chars (int): Number of characters to show in log previews for tool calls/responses. Defaults to 20.
Toolset Examples:
- "research": Web search, extract, crawl + vision tools
"""
print("🤖 AI Agent with Tool Calling")
print("=" * 50)
# Handle tool listing
if list_tools:
from model_tools import get_all_tool_names, get_toolset_for_tool, get_available_toolsets
from toolsets import get_all_toolsets, get_toolset_info
print("📋 Available Tools & Toolsets:")
print("-" * 50)
# Show new toolsets system
print("\n🎯 Predefined Toolsets (New System):")
print("-" * 40)
all_toolsets = get_all_toolsets()
# Group by category
basic_toolsets = []
composite_toolsets = []
scenario_toolsets = []
for name, toolset in all_toolsets.items():
info = get_toolset_info(name)
if info:
entry = (name, info)
if name in ["web", "terminal", "vision", "creative", "reasoning"]:
basic_toolsets.append(entry)
elif name in ["research", "development", "analysis", "content_creation", "full_stack"]:
composite_toolsets.append(entry)
else:
scenario_toolsets.append(entry)
# Print basic toolsets
print("\n📌 Basic Toolsets:")
for name, info in basic_toolsets:
tools_str = ', '.join(info['resolved_tools']) if info['resolved_tools'] else 'none'
print(f"{name:15} - {info['description']}")
print(f" Tools: {tools_str}")
# Print composite toolsets
print("\n📂 Composite Toolsets (built from other toolsets):")
for name, info in composite_toolsets:
includes_str = ', '.join(info['includes']) if info['includes'] else 'none'
print(f"{name:15} - {info['description']}")
print(f" Includes: {includes_str}")
print(f" Total tools: {info['tool_count']}")
# Print scenario-specific toolsets
print("\n🎭 Scenario-Specific Toolsets:")
for name, info in scenario_toolsets:
print(f"{name:20} - {info['description']}")
print(f" Total tools: {info['tool_count']}")
# Show legacy toolset compatibility
print("\n📦 Legacy Toolsets (for backward compatibility):")
legacy_toolsets = get_available_toolsets()
for name, info in legacy_toolsets.items():
status = "" if info["available"] else ""
print(f" {status} {name}: {info['description']}")
if not info["available"]:
print(f" Requirements: {', '.join(info['requirements'])}")
# Show individual tools
all_tools = get_all_tool_names()
print(f"\n🔧 Individual Tools ({len(all_tools)} available):")
for tool_name in sorted(all_tools):
toolset = get_toolset_for_tool(tool_name)
print(f" 📌 {tool_name} (from {toolset})")
print(f"\n💡 Usage Examples:")
print(f" # Use predefined toolsets")
print(f" python run_agent.py --enabled_toolsets=research --query='search for Python news'")
print(f" python run_agent.py --enabled_toolsets=development --query='debug this code'")
print(f" python run_agent.py --enabled_toolsets=safe --query='analyze without terminal'")
print(f" ")
print(f" # Combine multiple toolsets")
print(f" python run_agent.py --enabled_toolsets=web,vision --query='analyze website'")
print(f" ")
print(f" # Disable toolsets")
print(f" python run_agent.py --disabled_toolsets=terminal --query='no command execution'")
print(f" ")
print(f" # Run with trajectory saving enabled")
print(f" python run_agent.py --save_trajectories --query='your question here'")
return
# Parse toolset selection arguments
enabled_toolsets_list = None
disabled_toolsets_list = None
if enabled_toolsets:
enabled_toolsets_list = [t.strip() for t in enabled_toolsets.split(",")]
print(f"🎯 Enabled toolsets: {enabled_toolsets_list}")
if disabled_toolsets:
disabled_toolsets_list = [t.strip() for t in disabled_toolsets.split(",")]
print(f"🚫 Disabled toolsets: {disabled_toolsets_list}")
if save_trajectories:
print(f"💾 Trajectory saving: ENABLED")
print(f" - Successful conversations → trajectory_samples.jsonl")
print(f" - Failed conversations → failed_trajectories.jsonl")
# Initialize agent with provided parameters
try:
agent = AIAgent(
base_url=base_url,
model=model,
api_key=api_key,
max_iterations=max_turns,
enabled_toolsets=enabled_toolsets_list,
disabled_toolsets=disabled_toolsets_list,
save_trajectories=save_trajectories,
verbose_logging=verbose,
log_prefix_chars=log_prefix_chars
)
except RuntimeError as e:
print(f"❌ Failed to initialize agent: {e}")
return
# Use provided query or default to Python 3.13 example
if query is None:
user_query = (
"Tell me about the latest developments in Python 3.13 and what new features "
"developers should know about. Please search for current information and try it out."
)
else:
user_query = query
print(f"\n📝 User Query: {user_query}")
print("\n" + "=" * 50)
# Run conversation
result = agent.run_conversation(user_query)
print("\n" + "=" * 50)
print("📋 CONVERSATION SUMMARY")
print("=" * 50)
print(f"✅ Completed: {result['completed']}")
print(f"📞 API Calls: {result['api_calls']}")
print(f"💬 Messages: {len(result['messages'])}")
if result['final_response']:
print(f"\n🎯 FINAL RESPONSE:")
print("-" * 30)
print(result['final_response'])
print("\n👋 Agent execution completed!")
if __name__ == "__main__":
fire.Fire(main)