--- a/env/lib/python3.7/site-packages/rdflib/extras/describer.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,269 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-
-from rdflib import py3compat
-__doc__ = py3compat.format_doctest_out("""
-A Describer is a stateful utility for creating RDF statements in a
-semi-declarative manner. It has methods for creating literal values, rel and
-rev resource relations (somewhat resembling RDFa).
-
-The `rel` and ``rev`` methods return a context manager which sets the current
-about to the referenced resource for the context scope (for use with the
-``with`` statement).
-
-Full example in the ``to_rdf`` method below::
-
-    >>> import datetime
-    >>> from rdflib.graph import Graph
-    >>> from rdflib.namespace import Namespace, RDFS, FOAF
-    >>>
-    >>> ORG_URI = "http://example.org/"
-    >>>
-    >>> CV = Namespace("http://purl.org/captsolo/resume-rdf/0.2/cv#")
-    >>>
-    >>> class Person(object):
-    ...     def __init__(self):
-    ...         self.first_name = %(u)s"Some"
-    ...         self.last_name = %(u)s"Body"
-    ...         self.username = "some1"
-    ...         self.presentation = %(u)s"Just a Python & RDF hacker."
-    ...         self.image = "/images/persons/" + self.username + ".jpg"
-    ...         self.site = "http://example.net/"
-    ...         self.start_date = datetime.date(2009, 9, 4)
-    ...     def get_full_name(self):
-    ...         return %(u)s" ".join([self.first_name, self.last_name])
-    ...     def get_absolute_url(self):
-    ...         return "/persons/" + self.username
-    ...     def get_thumbnail_url(self):
-    ...         return self.image.replace('.jpg', '-thumb.jpg')
-    ...
-    ...     def to_rdf(self):
-    ...         graph = Graph()
-    ...         graph.bind('foaf', FOAF)
-    ...         graph.bind('cv', CV)
-    ...         lang = 'en'
-    ...         d = Describer(graph, base=ORG_URI)
-    ...         d.about(self.get_absolute_url()+'#person')
-    ...         d.rdftype(FOAF.Person)
-    ...         d.value(FOAF.name, self.get_full_name())
-    ...         d.value(FOAF.firstName, self.first_name)
-    ...         d.value(FOAF.surname, self.last_name)
-    ...         d.rel(FOAF.homepage, self.site)
-    ...         d.value(RDFS.comment, self.presentation, lang=lang)
-    ...         with d.rel(FOAF.depiction, self.image):
-    ...             d.rdftype(FOAF.Image)
-    ...             d.rel(FOAF.thumbnail, self.get_thumbnail_url())
-    ...         with d.rev(CV.aboutPerson):
-    ...             d.rdftype(CV.CV)
-    ...             with d.rel(CV.hasWorkHistory):
-    ...                 d.value(CV.startDate, self.start_date)
-    ...                 d.rel(CV.employedIn, ORG_URI+"#company")
-    ...         return graph
-    ...
-    >>> person_graph = Person().to_rdf()
-    >>> expected = Graph().parse(data='''<?xml version="1.0" encoding="utf-8"?>
-    ... <rdf:RDF
-    ...   xmlns:foaf="http://xmlns.com/foaf/0.1/"
-    ...   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-    ...   xmlns:cv="http://purl.org/captsolo/resume-rdf/0.2/cv#"
-    ...   xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
-    ...   <foaf:Person rdf:about="http://example.org/persons/some1#person">
-    ...     <foaf:name>Some Body</foaf:name>
-    ...     <foaf:firstName>Some</foaf:firstName>
-    ...     <foaf:surname>Body</foaf:surname>
-    ...     <foaf:depiction>
-    ...       <foaf:Image
-    ...         rdf:about=
-    ...             "http://example.org/images/persons/some1.jpg">
-    ...         <foaf:thumbnail
-    ...         rdf:resource=
-    ...             "http://example.org/images/persons/some1-thumb.jpg"/>
-    ...       </foaf:Image>
-    ...     </foaf:depiction>
-    ...     <rdfs:comment xml:lang="en">
-    ...             Just a Python &amp; RDF hacker.
-    ...     </rdfs:comment>
-    ...     <foaf:homepage rdf:resource="http://example.net/"/>
-    ...   </foaf:Person>
-    ...   <cv:CV>
-    ...     <cv:aboutPerson
-    ...         rdf:resource="http://example.org/persons/some1#person">
-    ...     </cv:aboutPerson>
-    ...     <cv:hasWorkHistory>
-    ...       <rdf:Description>
-    ...         <cv:startDate
-    ...             rdf:datatype="http://www.w3.org/2001/XMLSchema#date"
-    ...             >2009-09-04</cv:startDate>
-    ...         <cv:employedIn rdf:resource="http://example.org/#company"/>
-    ...       </rdf:Description>
-    ...     </cv:hasWorkHistory>
-    ...   </cv:CV>
-    ... </rdf:RDF>
-    ... ''')
-    >>>
-    >>> from rdflib.compare import isomorphic
-    >>> isomorphic(person_graph, expected)  #doctest: +SKIP
-    True
-""")
-
-from contextlib import contextmanager
-from rdflib.graph import Graph
-from rdflib.namespace import RDF
-from rdflib.term import BNode
-from rdflib.term import Identifier
-from rdflib.term import Literal
-from rdflib.term import URIRef
-from rdflib.py3compat import format_doctest_out
-
-
-class Describer(object):
-
-    def __init__(self, graph=None, about=None, base=None):
-        if graph is None:
-            graph = Graph()
-        self.graph = graph
-        self.base = base
-        self._subjects = []
-        self.about(about or None)
-
-    @format_doctest_out
-    def about(self, subject, **kws):
-        """
-        Sets the current subject. Will convert the given object into an
-        ``URIRef`` if it's not an ``Identifier``.
-
-        Usage::
-
-            >>> d = Describer()
-            >>> d._current() #doctest: +ELLIPSIS
-            rdflib.term.BNode(...)
-            >>> d.about("http://example.org/")
-            >>> d._current()
-            rdflib.term.URIRef(%(u)s'http://example.org/')
-
-        """
-        kws.setdefault('base', self.base)
-        subject = cast_identifier(subject, **kws)
-        if self._subjects:
-            self._subjects[-1] = subject
-        else:
-            self._subjects.append(subject)
-
-    @format_doctest_out
-    def value(self, p, v, **kws):
-        """
-        Set a literal value for the given property. Will cast the value to an
-        ``Literal`` if a plain literal is given.
-
-        Usage::
-
-            >>> from rdflib import URIRef
-            >>> from rdflib.namespace import RDF, RDFS
-            >>> d = Describer(about="http://example.org/")
-            >>> d.value(RDFS.label, "Example")
-            >>> d.graph.value(URIRef('http://example.org/'), RDFS.label)
-            rdflib.term.Literal(%(u)s'Example')
-
-        """
-        v = cast_value(v, **kws)
-        self.graph.add((self._current(), p, v))
-
-    @format_doctest_out
-    def rel(self, p, o=None, **kws):
-        """Set an object for the given property. Will convert the given object
-        into an ``URIRef`` if it's not an ``Identifier``. If none is given, a
-        new ``BNode`` is used.
-
-        Returns a context manager for use in a ``with`` block, within which the
-        given object is used as current subject.
-
-        Usage::
-
-            >>> from rdflib import URIRef
-            >>> from rdflib.namespace import RDF, RDFS
-            >>> d = Describer(about="/", base="http://example.org/")
-            >>> _ctxt = d.rel(RDFS.seeAlso, "/about")
-            >>> d.graph.value(URIRef('http://example.org/'), RDFS.seeAlso)
-            rdflib.term.URIRef(%(u)s'http://example.org/about')
-
-            >>> with d.rel(RDFS.seeAlso, "/more"):
-            ...     d.value(RDFS.label, "More")
-            >>> (URIRef('http://example.org/'), RDFS.seeAlso,
-            ...         URIRef('http://example.org/more')) in d.graph
-            True
-            >>> d.graph.value(URIRef('http://example.org/more'), RDFS.label)
-            rdflib.term.Literal(%(u)s'More')
-
-        """
-
-        kws.setdefault('base', self.base)
-        p = cast_identifier(p)
-        o = cast_identifier(o, **kws)
-        self.graph.add((self._current(), p, o))
-        return self._subject_stack(o)
-
-    @format_doctest_out
-    def rev(self, p, s=None, **kws):
-        """
-        Same as ``rel``, but uses current subject as *object* of the relation.
-        The given resource is still used as subject in the returned context
-        manager.
-
-        Usage::
-
-            >>> from rdflib import URIRef
-            >>> from rdflib.namespace import RDF, RDFS
-            >>> d = Describer(about="http://example.org/")
-            >>> with d.rev(RDFS.seeAlso, "http://example.net/"):
-            ...     d.value(RDFS.label, "Net")
-            >>> (URIRef('http://example.net/'), RDFS.seeAlso,
-            ...         URIRef('http://example.org/')) in d.graph
-            True
-            >>> d.graph.value(URIRef('http://example.net/'), RDFS.label)
-            rdflib.term.Literal(%(u)s'Net')
-
-        """
-        kws.setdefault('base', self.base)
-        p = cast_identifier(p)
-        s = cast_identifier(s, **kws)
-        self.graph.add((s, p, self._current()))
-        return self._subject_stack(s)
-
-    def rdftype(self, t):
-        """
-        Shorthand for setting rdf:type of the current subject.
-
-        Usage::
-
-            >>> from rdflib import URIRef
-            >>> from rdflib.namespace import RDF, RDFS
-            >>> d = Describer(about="http://example.org/")
-            >>> d.rdftype(RDFS.Resource)
-            >>> (URIRef('http://example.org/'),
-            ...     RDF.type, RDFS.Resource) in d.graph
-            True
-
-        """
-        self.graph.add((self._current(), RDF.type, t))
-
-    def _current(self):
-        return self._subjects[-1]
-
-    @contextmanager
-    def _subject_stack(self, subject):
-        self._subjects.append(subject)
-        yield None
-        self._subjects.pop()
-
-
-def cast_value(v, **kws):
-    if not isinstance(v, Literal):
-        v = Literal(v, **kws)
-    return v
-
-
-def cast_identifier(ref, **kws):
-    ref = ref or BNode()
-    if not isinstance(ref, Identifier):
-        ref = URIRef(ref, **kws)
-    return ref