importlab

importlab

Importlab is a library for Python that automatically infers dependencies and calculates a dependency graph. It can perform dependency ordering of a set of files, including cycle detection.

Importlab's main use case is to work with static analysis tools that process one file at a time, ensuring that a file's dependencies are analysed before it is.

(This is not an official Google product.)

License

Apache 2.0

Installation

Importlab can be installed from pip

::

pip install importlab

To check out and install the latest source code

::

git clone https://github.com/google/importlab.git
cd importlab
python setup.py install

Usage

Importlab is primarily intended to be used as a library. It takes one or more python files as arguments, and generates an import graph, typically used to process files in dependency order.

It is currently integrated into pytype <https://github.com/google/pytype>__

Command-line tool

Importlab ships with a small command-line tool, also called importlab, which can display some information about a project's import graph.

::

usage: importlab [-h] [--tree] [--unresolved] [filename [filename ...]]

positional arguments:
  filename              input file(s)

optional arguments:
  -h, --help            show this help message and exit
  --tree                Display import tree.
  --unresolved          Display unresolved dependencies.

Roadmap

• Makefile generation, to take advantage of make's incremental update and parallel execution features

• Integration with other static analysis tools