pyliveupdate 0.1.2

A tool to manipulate python code at runtime for logging, profiling, debugging, etc.

pyliveupdate

PyLiveUpdate is a Python runtime monitoring, profiling, debugging and bugfixing tool under development.

PyLiveUpdate allows developers to profile, troubleshoot and fix production issues for Python applications without restarting the programs.

Key features (under developing)

• Profile specific (by name) Python functions call time.
• Check the function invocation details such as function parameters, return object, local variables and etc.
• Add logs to specific functions
• Dynamic patching a function

Quick start

Requirements

• bytecode

Compatibility

• Supports Python 3.6+ on Linux.

Install

pip install pyliveupdate

How to use

We currently implemented function profiling and are implementing more. Please feel free to let us know if you find other features useful: https://github.com/devopspp/pyliveupdate/issues/2.

profile function call time

1. Start pyliveupdate server

pylu-server --logserver

2. In your program (like examples/program1.py) main module add

from pyliveupdate import *
client.UpdateClient().start()

3. Run your program (make sure in the correct directory)

cd examples
python program1.py

4. Start profile one function on the server side

instru('__main__.bar')

or any functions

instru('**')

5. Check output in either your program output or /tmp/instru.log
6. List applied profiling

listinstru

7. Stop a profiling by its id without stop your program

revert(1)

Known Users

Welcome to register your company name here: https://github.com/devopspp/pyliveupdate/issues/1

Credit

Projects

• pyrasite: Inject code into running Python processes.