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https://github.com/thoth-station/invectio

Statically analyze sources and extract information about called or exported library functions in Python applications
https://github.com/thoth-station/invectio

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Statically analyze sources and extract information about called or exported library functions in Python applications

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README

          

Invectio
--------

A simple tool to gather symbols provided or library calls and attribute usage
based on static analysis of sources of Python applications.

See `the linked article describing this
tool `__.

Installation
============

Invectio can be installed from `PyPI `_ using:

.. code-block:: console

$ pip3 install invectio
$ invectio --help

Usage
=====

You can use this library as a CLI tool or as a Python module:

.. code-block:: console

invectio whatprovides project-dir/ # To scan all Python files recursively for symbols provided.
invectio whatprovides app.py # To perform symbols gathering on app.py file.

invectio whatuses project-dir/ # To scan all Python files recursively for symbols used from libraries.
invectio whatuses app.py # To perform gather symbols used from libraries on app.py file.

.. code-block:: python

from invectio import gather_library_usage
from invectio import gather_symbols_provided

result: dict = gather_library_usage("project-dir")
result: dict = gather_library_usage("app.py")

result: dict = gather_symbols_provided("project-dir")
result: dict = gather_symbols_provided("app.py")

Limitations
###########

As Python is a dynamic programming language, it's not possible to obtain all
library functions/attributes usage simply by performing static analysis of
sources. One can still perfom "crazy" things like:

.. code-block:: python

import tensorflow

getattr(tensorflow, "const" + "ant")("Hello, Invectio")

This library does its best to detect all function/attributes being used inside
Python sources, but usage like shown above cannot be detected simply by static
analysis of source code.

Development
===========

To create a dev environment, clone the invectio repo and install all the dependencies:

.. code-block:: console

git clone https://github.com/thoth-station/invectio && cd invectio
pipenv install --dev

To perform checks against unit tests present in the `tests/` directory,
issue the following command from the root of the git repo:

.. code-block:: console

pipenv run python3 setup.py test