bpo-19610: Warn if distutils is provided something other than a list to some fields (#4685)
* Rather than raise TypeError, warn and call list() on the value. * Fix tests, revise NEWS and whatsnew text. * Revise documentation, a string is okay as well. * Ensure 'requires' and 'obsoletes' are real lists. * Test that requires and obsoletes are turned to lists.
This commit is contained in:
Neil Schemenauer
GitHub
parent
9625bf520e
commit
8837dd092f
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@ -286,9 +286,9 @@ the full reference.
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Distribution constructor. :func:`setup` creates a Distribution instance.
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.. versionchanged:: 3.7
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:class:`~distutils.core.Distribution` now raises a :exc:`TypeError` if
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``classifiers``, ``keywords`` and ``platforms`` fields are not specified
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as a list.
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:class:`~distutils.core.Distribution` now warns if ``classifiers``,
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``keywords`` and ``platforms`` fields are not specified as a list or
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a string.
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.. class:: Command
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@ -298,10 +298,8 @@ README.rst is now included in the list of distutils standard READMEs and
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therefore included in source distributions.
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(Contributed by Ryan Gonzalez in :issue:`11913`.)
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:class:`distutils.core.setup` now raises a :exc:`TypeError` if
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``classifiers``, ``keywords`` and ``platforms`` fields are not specified
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as a list. However, to minimize backwards incompatibility concerns,
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``keywords`` and ``platforms`` fields still accept a comma separated string.
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:class:`distutils.core.setup` now warns if the ``classifiers``, ``keywords``
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and ``platforms`` fields are not specified as a list or a string.
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(Contributed by Berker Peksag in :issue:`19610`.)
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http.client
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@ -27,6 +27,20 @@ from distutils.debug import DEBUG
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command_re = re.compile(r'^[a-zA-Z]([a-zA-Z0-9_]*)$')
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def _ensure_list(value, fieldname):
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if isinstance(value, str):
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# a string containing comma separated values is okay. It will
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# be converted to a list by Distribution.finalize_options().
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pass
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elif not isinstance(value, list):
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# passing a tuple or an iterator perhaps, warn and convert
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typename = type(value).__name__
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msg = f"Warning: '{fieldname}' should be a list, got type '{typename}'"
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log.log(log.WARN, msg)
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value = list(value)
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return value
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class Distribution:
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"""The core of the Distutils. Most of the work hiding behind 'setup'
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is really done within a Distribution instance, which farms the work out
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@ -257,10 +271,7 @@ Common commands: (see '--help-commands' for more)
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setattr(self, key, val)
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else:
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msg = "Unknown distribution option: %s" % repr(key)
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if warnings is not None:
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warnings.warn(msg)
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else:
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sys.stderr.write(msg + "\n")
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# no-user-cfg is handled before other command line args
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# because other args override the config files, and this
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@ -1189,36 +1200,19 @@ class DistributionMetadata:
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return self.keywords or []
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def set_keywords(self, value):
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# If 'keywords' is a string, it will be converted to a list
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# by Distribution.finalize_options(). To maintain backwards
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# compatibility, do not raise an exception if 'keywords' is
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# a string.
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if not isinstance(value, (list, str)):
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msg = "'keywords' should be a 'list', not %r"
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raise TypeError(msg % type(value).__name__)
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self.keywords = value
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self.keywords = _ensure_list(value, 'keywords')
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def get_platforms(self):
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return self.platforms or ["UNKNOWN"]
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def set_platforms(self, value):
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# If 'platforms' is a string, it will be converted to a list
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# by Distribution.finalize_options(). To maintain backwards
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# compatibility, do not raise an exception if 'platforms' is
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# a string.
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if not isinstance(value, (list, str)):
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msg = "'platforms' should be a 'list', not %r"
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raise TypeError(msg % type(value).__name__)
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self.platforms = value
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self.platforms = _ensure_list(value, 'platforms')
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def get_classifiers(self):
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return self.classifiers or []
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def set_classifiers(self, value):
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if not isinstance(value, list):
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msg = "'classifiers' should be a 'list', not %r"
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raise TypeError(msg % type(value).__name__)
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self.classifiers = value
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self.classifiers = _ensure_list(value, 'classifiers')
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def get_download_url(self):
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return self.download_url or "UNKNOWN"
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@ -1231,7 +1225,7 @@ class DistributionMetadata:
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import distutils.versionpredicate
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for v in value:
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distutils.versionpredicate.VersionPredicate(v)
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self.requires = value
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self.requires = list(value)
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def get_provides(self):
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return self.provides or []
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@ -1250,7 +1244,7 @@ class DistributionMetadata:
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import distutils.versionpredicate
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for v in value:
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distutils.versionpredicate.VersionPredicate(v)
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self.obsoletes = value
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self.obsoletes = list(value)
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def fix_help_options(options):
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"""Convert a 4-tuple 'help_options' list as found in various command
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@ -11,7 +11,9 @@ from unittest import mock
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from distutils.dist import Distribution, fix_help_options, DistributionMetadata
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from distutils.cmd import Command
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from test.support import TESTFN, captured_stdout, run_unittest
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from test.support import (
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TESTFN, captured_stdout, captured_stderr, run_unittest
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)
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from distutils.tests import support
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from distutils import log
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@ -319,6 +321,13 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
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"version": "1.0",
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"requires": ["my.pkg (splat)"]})
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def test_requires_to_list(self):
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attrs = {"name": "package",
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"requires": iter(["other"])}
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dist = Distribution(attrs)
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self.assertIsInstance(dist.metadata.requires, list)
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def test_obsoletes(self):
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attrs = {"name": "package",
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"version": "1.0",
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@ -341,6 +350,12 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
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"version": "1.0",
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"obsoletes": ["my.pkg (splat)"]})
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def test_obsoletes_to_list(self):
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attrs = {"name": "package",
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"obsoletes": iter(["other"])}
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dist = Distribution(attrs)
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self.assertIsInstance(dist.metadata.obsoletes, list)
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def test_classifier(self):
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attrs = {'name': 'Boa', 'version': '3.0',
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'classifiers': ['Programming Language :: Python :: 3']}
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@ -353,9 +368,14 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
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def test_classifier_invalid_type(self):
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attrs = {'name': 'Boa', 'version': '3.0',
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'classifiers': ('Programming Language :: Python :: 3',)}
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msg = "'classifiers' should be a 'list', not 'tuple'"
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with self.assertRaises(TypeError, msg=msg):
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Distribution(attrs)
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with captured_stderr() as error:
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d = Distribution(attrs)
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# should have warning about passing a non-list
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self.assertIn('should be a list', error.getvalue())
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# should be converted to a list
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self.assertIsInstance(d.metadata.classifiers, list)
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self.assertEqual(d.metadata.classifiers,
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list(attrs['classifiers']))
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def test_keywords(self):
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attrs = {'name': 'Monty', 'version': '1.0',
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@ -367,9 +387,13 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
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def test_keywords_invalid_type(self):
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attrs = {'name': 'Monty', 'version': '1.0',
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'keywords': ('spam', 'eggs', 'life of brian')}
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msg = "'keywords' should be a 'list', not 'tuple'"
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with self.assertRaises(TypeError, msg=msg):
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Distribution(attrs)
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with captured_stderr() as error:
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d = Distribution(attrs)
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# should have warning about passing a non-list
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self.assertIn('should be a list', error.getvalue())
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# should be converted to a list
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self.assertIsInstance(d.metadata.keywords, list)
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self.assertEqual(d.metadata.keywords, list(attrs['keywords']))
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def test_platforms(self):
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attrs = {'name': 'Monty', 'version': '1.0',
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@ -381,9 +405,13 @@ class MetadataTestCase(support.TempdirManager, support.EnvironGuard,
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def test_platforms_invalid_types(self):
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attrs = {'name': 'Monty', 'version': '1.0',
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'platforms': ('GNU/Linux', 'Some Evil Platform')}
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msg = "'platforms' should be a 'list', not 'tuple'"
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with self.assertRaises(TypeError, msg=msg):
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Distribution(attrs)
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with captured_stderr() as error:
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d = Distribution(attrs)
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# should have warning about passing a non-list
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self.assertIn('should be a list', error.getvalue())
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# should be converted to a list
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self.assertIsInstance(d.metadata.platforms, list)
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self.assertEqual(d.metadata.platforms, list(attrs['platforms']))
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def test_download_url(self):
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attrs = {'name': 'Boa', 'version': '3.0',
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@ -1,5 +1,4 @@
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``setup()`` now raises :exc:`TypeError` for invalid types.
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``setup()`` now warns about invalid types for some fields.
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The ``distutils.dist.Distribution`` class now explicitly raises an exception
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when ``classifiers``, ``keywords`` and ``platforms`` fields are not
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specified as a list.
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The ``distutils.dist.Distribution`` class now warns when ``classifiers``,
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``keywords`` and ``platforms`` fields are not specified as a list or a string.
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