我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用pkg_resources.find_distributions()。
def check_package_exists(package, lib_dir): """Check if a package is installed globally or in lib_dir. Returns True when the requirement is met. Returns False when the package is not installed or doesn't meet req. """ try: req = pkg_resources.Requirement.parse(package) except ValueError: # This is a zip file req = pkg_resources.Requirement.parse(urlparse(package).fragment) # Check packages from lib dir if lib_dir is not None: if any(dist in req for dist in pkg_resources.find_distributions(lib_dir)): return True # Check packages from global + virtual environment # pylint: disable=not-an-iterable return any(dist in req for dist in pkg_resources.working_set)
def check_package_exists(package: str, lib_dir: str) -> bool: """Check if a package is installed globally or in lib_dir. Returns True when the requirement is met. Returns False when the package is not installed or doesn't meet req. """ try: req = pkg_resources.Requirement.parse(package) except ValueError: # This is a zip file req = pkg_resources.Requirement.parse(urlparse(package).fragment) # Check packages from lib dir if lib_dir is not None: if any(dist in req for dist in pkg_resources.find_distributions(lib_dir)): return True # Check packages from global + virtual environment # pylint: disable=not-an-iterable return any(dist in req for dist in pkg_resources.working_set)
def test_distinfo(self): dists = {} for d in pkg_resources.find_distributions(self.tmpdir): dists[d.project_name] = d assert len(dists) == 2, dists unversioned = dists['UnversionedDistribution'] versioned = dists['VersionedDistribution'] assert versioned.version == '2.718' # from filename assert unversioned.version == '0.3' # from METADATA
def test_conditional_dependencies(self): requires = [pkg_resources.Requirement.parse('splort==4'), pkg_resources.Requirement.parse('quux>=1.1')] for d in pkg_resources.find_distributions(self.tmpdir): self.assertEqual(d.requires(), requires[:1]) self.assertEqual(d.requires(extras=('baz',)), requires) self.assertEqual(d.extras, ['baz'])
def _directory_import(self): """ Import astropy_helpers from the given path, which will be added to sys.path. Must return True if the import succeeded, and False otherwise. """ # Return True on success, False on failure but download is allowed, and # otherwise raise SystemExit path = os.path.abspath(self.path) # Use an empty WorkingSet rather than the man # pkg_resources.working_set, since on older versions of setuptools this # will invoke a VersionConflict when trying to install an upgrade ws = pkg_resources.WorkingSet([]) ws.add_entry(path) dist = ws.by_key.get(DIST_NAME) if dist is None: # We didn't find an egg-info/dist-info in the given path, but if a # setup.py exists we can generate it setup_py = os.path.join(path, 'setup.py') if os.path.isfile(setup_py): with _silence(): run_setup(os.path.join(path, 'setup.py'), ['egg_info']) for dist in pkg_resources.find_distributions(path, True): # There should be only one... return dist return dist
def test_distinfo(self): dists = dict( (d.project_name, d) for d in pkg_resources.find_distributions(self.tmpdir) ) assert len(dists) == 2, dists unversioned = dists['UnversionedDistribution'] versioned = dists['VersionedDistribution'] assert versioned.version == '2.718' # from filename assert unversioned.version == '0.3' # from METADATA
def test_conditional_dependencies(self): specs = 'splort==4', 'quux>=1.1' requires = list(map(pkg_resources.Requirement.parse, specs)) for d in pkg_resources.find_distributions(self.tmpdir): assert d.requires() == requires[:1] assert d.requires(extras=('baz',)) == requires assert d.extras == ['baz']
def test_non_egg_dir_named_egg(self, target_dir): dists = pkg_resources.find_distributions(target_dir) assert not list(dists)
def test_standalone_egg_directory(self, project_dir, target_dir): # install this distro as an unpacked egg: args = [ sys.executable, '-c', 'from setuptools.command.easy_install import main; main()', '-mNx', '-d', target_dir, '--always-unzip', project_dir, ] subprocess.check_call(args) dists = pkg_resources.find_distributions(target_dir) assert [dist.project_name for dist in dists] == ['my-test-package'] dists = pkg_resources.find_distributions(target_dir, only=True) assert not list(dists)
def test_zipped_egg(self, project_dir, target_dir): # install this distro as an unpacked egg: args = [ sys.executable, '-c', 'from setuptools.command.easy_install import main; main()', '-mNx', '-d', target_dir, '--zip-ok', project_dir, ] subprocess.check_call(args) dists = pkg_resources.find_distributions(target_dir) assert [dist.project_name for dist in dists] == ['my-test-package'] dists = pkg_resources.find_distributions(target_dir, only=True) assert not list(dists)
def test_distinfo(self, metadata): dists = dict( (d.project_name, d) for d in pkg_resources.find_distributions(metadata) ) assert len(dists) == 2, dists unversioned = dists['UnversionedDistribution'] versioned = dists['VersionedDistribution'] assert versioned.version == '2.718' # from filename assert unversioned.version == '0.3' # from METADATA
def test_conditional_dependencies(self, metadata): specs = 'splort==4', 'quux>=1.1' requires = list(map(pkg_resources.Requirement.parse, specs)) for d in pkg_resources.find_distributions(metadata): assert d.requires() == requires[:1] assert d.requires(extras=('baz',)) == [ requires[0], pkg_resources.Requirement.parse('quux>=1.1;extra=="baz"'), ] assert d.extras == ['baz']
