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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

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