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Python Call Graph is a library and command line tool that visualises the flow of your Python application. See http://pycallgraph.slowchop.com/ for more information.

Project description

Welcome! Python Call Graph is a Python module that creates call graph visualizations for Python applications.

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Screenshots

Click on the images below to see a larger version and the source code that generated them.

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Project Status

The latest version is 1.0.1 which was released on 2013-09-17, and is a backwards incompatbile from the previous release.

The project lives on GitHub, where you can report issues, contribute to the project by forking the project then creating a pull request, or just browse the source code.

The documentation needs some work stiil. Feel free to contribute :)

Features

  • Support for Python 2.7+ and Python 3.3+.
  • Static visualizations of the call graph using various tools such as Graphviz and Gephi.
  • Execute pycallgraph from the command line or import it in your code.
  • Customisable colors. You can programatically set the colors based on number of calls, time taken, memory usage, etc.
  • Modules can be visually grouped together.
  • Easily extendable to create your own output formats.

Quick Start

Installation is easy as:

pip install pycallgraph

You can either use the command-line interface for a quick visualization of your Python script, or the pycallgraph module for more fine-grained settings.

The following examples specify graphviz as the outputter, so it’s required to be installed. They will generate a file called pycallgraph.png.

The command-line method of running pycallgraph is:

$ pycallgraph graphviz -- ./mypythonscript.py

A simple use of the API is:

from pycallgraph import PyCallGraph
from pycallgraph.output import GraphvizOutput

with PyCallGraph(output=GraphvizOutput()):
    code_to_profile()

Documentation

Feel free to browse the documentation of pycallgraph for the usage guide and API reference.

Project details


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1.0.1

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