tmng 1.1.2

A framework-agnostic, process-safe, local performance timer for Python applications.

Performance Timing Module (tmng)

A framework-agnostic, process-safe, local performance timer for Python applications, designed for easy development and debugging. It logs timing data to a local SQLite file, avoiding external dependencies and network latency.

This module is built for reliability, using Pydantic for rigorous data validation and serialization, ensuring that every timing event recorded is structured and correct.

Key Features

• Simple CLI: Manage the tool with intuitive commands like timing enable, timing report.
• Framework-Agnostic: Works with Django, Flask, FastAPI, or any Python script.
• Pydantic-Powered Validation: All timing events are validated against a strict schema.
• Process-Safe: Works flawlessly across multiple processes.
• Globally Switchable: Enable or disable via the CLI or an environment variable.
• Rich, Validated Context: Attach metadata (e.g., user_id, task_id) to your timing events.

---

Quickstart

1. Install the Package from PyPI:

   pip install tmng
   

2. Enable the Timer: This only needs to be done once. It creates a config file in your user directory.

   timing enable
   

3. Initialize the Database: Run this once in your project's root directory to create the timing_log.db file.

   timing init
   

4. Add Timing to Your Code: Use the decorators or context managers as needed.

   from timing import time_block, time_function
   
   # Best for specific blocks
   with time_block("api_call", service="xero"):
       # ... timed code ...
   
   # Best for entire functions
   @time_function
   def send_weekly_emails(user_id):
       # ... timed function ...
   

5. Generate a Report: After your code has run, generate an interactive HTML dashboard.

   timing report
   

   This will generate timing_dashboard.html and open it in your browser.

---

CLI Usage

The timing command is your main entry point for managing the tool.

Command	Description
timing status	Check if the tool is enabled and see the event count.
timing enable	Globally enables the timing tool for your user.
timing disable	Globally disables the timing tool.
timing init	Creates the SQLite database file in the current directory.
timing report	Generates the interactive HTML report.
timing report --output "perf.html" --no-open	Customize report generation.

---

Environment Variables

For servers or CI/CD, you can override the global config with environment variables:

• TIMING_TOOL_ENABLED: Set to true to enable the timer. This takes precedence over the CLI setting.
• TIMING_DB_PATH: Set the full path to your database file (e.g., /var/data/my_app_timing.db).

---

Viewing the Data

You can still use any SQLite client to view the timing_log.db file or use the built-in report generator:

timing report