Skip to main content

No project description provided

Project description

Checks which imports are done and compares them to what's
in setup.py and warns when discovering missing or unneeded
dependencies.

Home-page: https://github.com/reinout/z3c.dependencychecker
Author: Reinout van Rees
Author-email: reinout@vanrees.org
License: BSD
Description-Content-Type: UNKNOWN
Description: z3c.dependencychecker
=====================

Checks which imports are done and compares them to what's in ``setup.py`` and
warn when discovering missing or unneeded dependencies.

.. image:: https://secure.travis-ci.org/reinout/z3c.dependencychecker.png?branch=master
:target: https://travis-ci.org/#!/reinout/z3c.dependencychecker

.. image:: https://coveralls.io/repos/github/reinout/z3c.dependencychecker/badge.svg?branch=master
:target: https://coveralls.io/github/reinout/z3c.dependencychecker?branch=master

.. contents::


What it does
------------

z3c.dependencychecker reports on:

- **Unused imports**: pyflakes is another tool that does this (and that also
reports on missing variables inside the files).

- **Missing (test) requirements**: imports without a corresponding requirement
in the ``setup.py``. There might be false alarms, but at least you've got a
(hopefully short) list of items to check.

Watch out for packages that have a different name than how they're imported.
For instance a requirement on ``pydns`` which is used as ``import DNS`` in
your code: pydns and DNS lead to separate "missing requirements: DNS" and
"unneeded requirements: pydns" warnings.

- **Unneeded (test) requirements**: requirements in your setup.py that aren't
imported anywhere in your code. You *might* need them because not
everything needs to be imported. It at least gives you a much smaller list
to check by hand.

- **Requirements that should be test-only**: if something is only imported in
a test file, it shouldn't be in the generic defaults. So you get a separate
list of requirements that should be moved from the regular to the test
requirements.

It checks the following locations:

- Python files for regular imports and their docstrings.

- Zcml files for ``package="some.thing"`` attributes. It also supports Plone's
generic setup files as well as FTI XML files.

- Python files, ``.txt`` and ``.rst`` files for imports in doctests.

- django settings files.

User mappings
-------------

Some packages available on pypi have a different name than the import statement needed to use them,
i.e. `python-dateutil` is imported as `import dateutil`.
Others provide more than one package, i.e `Zope2` provides several packages like `Products.Five` or `Products.OFSP`.

For those cases, z3c.dependencychecker has a solution: user mappings.

Add a `pyproject.toml` file on the root of your project with the following content:

[tool.dependencychecker]
python-dateutil = ['dateutil']
Zope2 = ['Products.Five', 'Products.OFSP' ]

z3c.dependencychecker will read this information and use it on its reports.

Credits
-------

z3c.dependencychecker is a different application/packaging of zope's
importchecker utility. It has been used in quite some projects, I grabbed a
copy from `lovely.recipe's checkout
<http://bazaar.launchpad.net/~vcs-imports/lovely.recipe/trunk/annotate/head%3A/src/lovely/recipe/importchecker/importchecker.py>`_.

- Martijn Faassen wrote the original importchecker script.

- `Reinout van Rees <http://reinout.vanrees.org>`_ added the dependency
checker functionality and packaged it (mostly while working at `The Health
Agency <http://www.thehealthagency.com>`_).

- Quite some fixes from `Jonas Baumann <https://github.com/jone>`_.

- Many updates to work well with modern Plone versions by `Gil Forcada
Codinachs <http://gil.badall.net/>`.


Source code, forking and reporting bugs
---------------------------------------

The source code can be found on github:
https://github.com/reinout/z3c.dependencychecker

You can fork and fix it from there. And you can add issues and feature
requests in the github issue tracker.

Every time you commit something, ``bin/code-analysis`` is automatically
run. Pay attention to the output and fix the problems that are reported. Or
fix the setup so that inappropriate reports are filtered out.


Usage of z3c.dependencychecker
==============================

.. :doctest:


Installation
------------

Either install z3c.dependencychecker globally (``easy_install
z3c.dependencychecker``) or install it in your buildout.


Usage
-----

Run the ``dependencychecker`` or ``bin/dependencychecker`` script from your
project's root folder and it will report on your dependencies.

By default, it looks in the ``src/`` directory for your sources.
Alternatively, you can specify a start directory yourself, for instance
``'.'`` if there's no ``src/`` directory.

We have a sample project in a temp directory:

>>> sample1_dir
'/TESTTEMP/sample1'
>>> ls(sample1_dir)
setup.py
src

For our test, we call the main() method, just like the ``dependencychecker``
script would:

>>> import os
>>> os.chdir(sample1_dir)
>>> from z3c.dependencychecker import dependencychecker
>>> dependencychecker.main()
Unused imports
==============
src/sample1/unusedimports.py:7: tempfile
src/sample1/unusedimports.py:4: zest.releaser
src/sample1/unusedimports.py:6: os
<BLANKLINE>
Missing requirements
====================
Products.GenericSetup.interfaces.EXTENSION
missing.req
other.generic.setup.dependency
plone.app.content.interfaces.INameFromTitle
plone.app.dexterity.behaviors.metadata.IBasic
plone.random1.interfaces.IMySchema
plone.random2.content.MyType
some_django_app
something.origname
zope.exceptions
zope.interface
<BLANKLINE>
Missing test requirements
=========================
plone.dexterity.browser.views.ContentTypeView
plone.dexterity.interfaces.IContentType
reinout.hurray
transaction
zope.filerepresentation.interfaces.IRawReadFile
<BLANKLINE>
Unneeded requirements
=====================
some.other.extension
unneeded.req
<BLANKLINE>
Requirements that should be test requirements
=============================================
Needed.By.Test
<BLANKLINE>
Unneeded test requirements
==========================
zope.testing
<BLANKLINE>
Note: requirements are taken from the egginfo dir, so you need
to re-run buildout (or setup.py or whatever) for changes in
setup.py to have effect.
<BLANKLINE>


Changelog of z3c.dependencychecker
==================================

2.1.1 (2018-03-10)
------------------

- Note: 2.1 had a technical release problem, hence 2.1.1.
[reinout]

- We're releasing it as a wheel, too, now.
[reinout]

- Small improvements to the debug logging (``-v/--verbose`` shows it).
[reinout]

- Remove unused parameter in DottedName.
[gforcada]

- All imports found by DocFiles imports extractor are marked as test ones.
[gforcada]

- Handle multiple dotted names found in a single ZCML parameter.
[gforcada]

- Use properties to make code more pythonic.
[gforcada]

- Allow users to define their own mappings on a `pyproject.toml` file.
See README.rst.

- Filter imports when adding them to the database, rather than on each report.
[gforcada]


2.0 (2018-01-04)
----------------

- Complete rewrite: code does no longer use deprecated functionality,
is more modular, more pythonic, easier to extend and hack, and above all,
has a 100% test coverage to ensure that it works as expected.
[gforcada]

- Add support for Python 3.
[gforcada]


1.16 (2017-06-21)
-----------------

- Don't crash anymore on, for instance, django code that needs a django
settings file to be available or that needs the django app config step to be
finished.
[reinout]

- Improved Django settings extraction.
[reinout]

- Better detection of python build-in modules. ``logging/__init__.py`` style
modules were previously missed.
[reinout]


1.15 (2015-09-02)
-----------------

- The name of a wrong package was sometimes found in case of a directory with
multiple egg-info directories (like
``/usr/lib/python2.7/dist-packages/*.egg-info/``...). Now the
``top_level.txt`` file in the egg-info directories is checked if the
top-level directory matches.
[reinout]


1.14 (2015-09-01)
-----------------

- The debug logging (``-v``) is now printed to stdout instead of stderr. This
makes it easier to grep or search in the verbose output for debugging
purposes.
[reinout]


1.13 (2015-08-29)
-----------------

- Import + semicolon + statement (like ``import
transaction;transaction.commit()``) is now also detected correctly.
[gforcada]

- The starting directory for packages with a dotted name (like
``zest.releaser``) is now also found automatically.
[reinout]

- Internal code change: moved the code out of the ``src/``
directory. Everything moved one level up.
[reinout]

- Dependencychecker doesn't descend anymore into directories without an
``__init__.py``. This helps with website projects that sometimes have python
files buried deep in directories that aren't actually part of the project's
python code.
[reinout]

- Multiple imports from similarly-named libraries on separate lines are now
handled correctly. An import of ``zope.interface`` on one line could
sometimes "hide" a ``zope.component`` import one line down.
[gforcada]


1.12 (2015-08-16)
-----------------

- Improve ZCML imports coverage (look on ``for`` and ``class`` as well).
[gforcada]

- Internal project updates (buildout version, test adjustments, etc).
[gforcada]

- Add support for FTI dependencies (behaviors, schema and class).
[gforcada]


1.11 (2013-04-16)
-----------------

- Support python installations without global setuptools installed
by searching the name in the setup.py as fallback.


1.10 (2013-02-24)
-----------------

- Treat non-test extras_require like normal install_requires.


1.9 (2013-02-13)
----------------

- Improved detection for "Django-style" package names with a dash in
them. Django doesn't deal well with namespace packages, so instead of
``zc.something``, you'll see packages like ``zc-something``. The import then
uses an underscore, ``zc_something``.

- Added support for Django settings files. Anything that matches
``*settings.py`` is searched for Django settings like ``INSTALLED_APPS =
[...]`` or ``MIDDLEWARE_CLASSES = (...)``.


1.8 (2013-02-13)
----------------

- Detect ZCML "provides", as used for generic setup profile registration.


1.7.1 (2012-11-26)
------------------

- Added travis.ci configuration. We're tested there, too, now!


1.7 (2012-11-26)
----------------

- Lookup package name for ZCML modules too, as it is done for python modules.

- Detect generic setup dependencies in ``metadata.xml`` files.


1.6 (2012-11-01)
----------------

- Fix AttributeError when "magic modules" like email.Header are imported.


1.5 (2012-07-03)
----------------

- Add support for zipped dists when looking up pkg name.


1.4 (2012-07-03)
----------------

- Lookup pkg name from egg-infos if possible (python >= 2.5). This helps for
instance with the PIL problem (which can be ``Imaging`` instead when you
import it).


1.3.2 (2012-06-29)
------------------

- Fixed broken 1.3.0 and 1.3.0 release: the ``MANIFEST.in`` was missing...


1.3.1 (2012-06-29)
------------------

- Documentation updates because we moved to github:
https://github.com/reinout/z3c.dependencychecker .


1.3 (2012-06-29)
----------------

- Added fix for standard library detection on OSX when using the python
buildout. (Patch by Jonas Baumann, as is the next item).

- Supporting ``[tests]`` in addition to ``[test]`` for test requirements.


1.2 (2011-09-19)
----------------

- Looking for a package directory named after the package name in preference
to the src/ directory.

- Compensating for django-style 'django-something' package names with
'django_something' package directories. Dash versus underscore.


1.1 (2010-01-06)
----------------

- Zcml files are also searched for 'component=' patterns as that can be used
by securitypolicy declarations.

- Dependencychecker is now case insensitive as pypi is too.

- Using optparse for parsing commandline now. Added --help and --version.


1.0 (2009-12-10)
----------------

- Documentation update.

- Improved test coverage. The dependencychecker module self is at 100%, the
original import checker module is at 91% coverage.


0.5 (2009-12-10)
----------------

- Searching in doctests (.py, .txt, .rst) for imports, too. Regex-based by
necessity, but it seems to catch what I can test it with.


0.4 (2009-12-10)
----------------

- Supporting "from zope import interface"-style imports where you really want
to be told you're missing an "zope.interface" dependency instead of just
"zope" (which is just a namespace package).


0.3 (2009-12-08)
----------------

- Sorted "unneeded requirements" reports and filtered out duplicates.

- Reporting separately on dependencies that should be moved from the regular
to the test dependencies.


0.2 (2009-12-08)
----------------

- Added tests. Initial quick test puts coverage at 86%.

- Fixed bug in test requirement detection.

- Added documentation.

- Moved source code to zope's svn repository.


0.1 (2009-12-02)
----------------

- Also reporting on unneeded imports.

- Added note on re-running buildout after a setup.py change.

- Added zcml lookup to detect even more missing imports.

- Added reporting on missing regular and test imports.

- Grabbing existing requirements from egginfo directory.

- Copied over Martijn Faassen's zope importchecker script.

Keywords: dependencies,requirements,missing,imports
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: BSD License
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Topic :: Software Development :: Quality Assurance

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

z3c.dependencychecker-2.1.1.tar.gz (42.0 kB view hashes)

Uploaded source

Built Distribution

z3c.dependencychecker-2.1.1-py2.py3-none-any.whl (57.6 kB view hashes)

Uploaded py2 py3

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page