Revert black (#1400)

* add dateTimeStamp, fundamental & constraining facets, 7-prop data model

* revert black version to that pinned in black.toml

* Revert "add dateTimeStamp, fundamental & constraining facets, 7-prop data model"

This reverts commit e5bcdd381b73c9ecfd436d1f8e221b27aedd5d3c.

4 files changed, 49 insertions, 82 deletions

diff --git a/admin/README.md b/admin/README.md
index e56c2612..67d27a2d 100644
--- a/admin/README.md
+++ b/admin/README.md
@@ -23,9 +23,8 @@ Tools to assist with RDFlib releases, like extracting all merged PRs from GitHub
     * `python3 setup.py bdist_wheel sdist`
     * `twine upload ./dist/*`
 1. Make GitHub release
-    * go to the tagged version, e.g. https://github.com/RDFLib/rdflib/releases/tag/6.0.0
+    * go to the taged version, e.g. https://github.com/RDFLib/rdflib/releases/tag/6.0.0
     * edit the release' notes there (likely copy from CHANGELOG)
 1. Build readthedocs docco
     * `latest` and `stable` need to be built at least
     * best to make sure the previous (outgoing) release has a number-pegged version, e.g. 5.0.0
-1. update the rdflib.dev website page
diff --git a/rdflib/namespace/_XSD.py b/rdflib/namespace/_XSD.py
index 80b63862..98c1618d 100644
--- a/rdflib/namespace/_XSD.py
+++ b/rdflib/namespace/_XSD.py
@@ -7,87 +7,55 @@ class XSD(DefinedNamespace):
     W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes
 
     Generated from: ../schemas/datatypes.xsd
-    Date: 2021-09-05 20:37+10
+    Date: 2020-05-26 14:21:14.993677
 
     """
 
-    _NS = Namespace("http://www.w3.org/2001/XMLSchema#")
-
-    ENTITIES: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#ENTITIES
-    ENTITY: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#ENTITY
-    ID: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#ID
-    IDREF: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#IDREF
-    IDREFS: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#IDREFS
-    NCName: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#NCName
-    NMTOKEN: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#NMTOKEN
-    NMTOKENS: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#NMTOKENS
-    NOTATION: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#NOTATIONNOTATION cannot be used directly in a schema; rather a type
-    Name: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#Name
-    QName: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#QName
-    anyURI: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#anyURI
-    base64Binary: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#base64Binary
-    boolean: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#boolean
-    byte: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#byte
-    date: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#date
-    dateTime: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#dateTime
-    dateTimeStamp: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#dateTimeStamp
+    ENTITIES: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#ENTITIES
+    ENTITY: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#ENTITY
+    ID: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#ID
+    IDREF: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#IDREF
+    IDREFS: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#IDREFS
+    NCName: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#NCName
+    NMTOKEN: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#NMTOKEN
+    NMTOKENS: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#NMTOKENS
+    NOTATION: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#NOTATIONNOTATION cannot be used directly in a schema; rather a type
+    Name: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#Name
+    QName: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#QName
+    anyURI: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#anyURI
+    base64Binary: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#base64Binary
+    boolean: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#boolean
+    byte: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#byte
+    date: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#date
+    dateTime: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#dateTime
     dayTimeDuration: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#dayTimeDuration
-    decimal: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#decimal
-    double: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#double
-    duration: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#duration
-    float: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#float
-    gDay: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#gDay
-    gMonth: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#gMonth
-    gMonthDay: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#gMonthDay
-    gYear: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#gYear
-    gYearMonth: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#gYearMonth
-    hexBinary: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#binary
-    int: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#int
-    integer: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#integer
-    language: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#language
-    long: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#long
-    negativeInteger: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#negativeInteger
-    nonNegativeInteger: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#nonNegativeInteger
-    nonPositiveInteger: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#nonPositiveInteger
-    normalizedString: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#normalizedString
-    positiveInteger: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#positiveInteger
-    short: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#short
-    string: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#string
-    time: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#time
-    token: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#token
-    unsignedByte: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#unsignedByte
-    unsignedInt: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#unsignedInt
-    unsignedLong: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#unsignedLong
-    unsignedShort: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#unsignedShort
+    decimal: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#decimal
+    double: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#double
+    duration: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#duration
+    float: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#float
+    gDay: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#gDay
+    gMonth: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#gMonth
+    gMonthDay: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#gMonthDay
+    gYear: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#gYear
+    gYearMonth: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#gYearMonth
+    hexBinary: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#binary
+    int: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#int
+    integer: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#integer
+    language: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#language
+    long: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#long
+    negativeInteger: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#negativeInteger
+    nonNegativeInteger: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#nonNegativeInteger
+    nonPositiveInteger: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#nonPositiveInteger
+    normalizedString: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#normalizedString
+    positiveInteger: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#positiveInteger
+    short: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#short
+    string: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#string
+    time: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#time
+    token: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#token
+    unsignedByte: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#unsignedByte
+    unsignedInt: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#unsignedInt
+    unsignedLong: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#unsignedLong
+    unsignedShort: URIRef  # see: http://www.w3.org/TR/xmlschema-2/#unsignedShort
     yearMonthDuration: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#yearMonthDuration
 
-    # fundamental facets - https://www.w3.org/TR/xmlschema11-2/#rf-fund-facets
-    ordered: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-ordered
-    bounded: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-bounded
-    cardinality: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-cardinality
-    numeric: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-numeric
-
-    # constraining facets - https://www.w3.org/TR/xmlschema11-2/#rf-facets
-    length: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-length
-    minLength: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-minLength
-    maxLength: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-maxLength
-    pattern: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-pattern
-    enumeration: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-enumeration
-    whiteSpace: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-whiteSpace
-    maxExclusive: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-maxExclusive
-    maxInclusive: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-maxInclusive
-    minExclusive: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-minExclusive
-    minInclusive: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-minInclusive
-    totalDigits: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-totalDigits
-    fractionDigits: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-fractionDigits
-    Assertions: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#rf-assertions
-    explicitTimezone: URIRef  # see: http://www.w3.org/TR/xmlschema11-2/#rf-explicitTimezone
-
-    # The Seven-property Model - https://www.w3.org/TR/xmlschema11-2/#theSevenPropertyModel
-    year: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-http://www.w3.org/TR/xmlschema11-2/#rf-whiteSpace
-    month: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-month
-    day: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-day
-    hour: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-hour
-    minute: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-minute
-    second: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-second
-    timezoneOffset: URIRef  # see: https://www.w3.org/TR/xmlschema11-2/#vp-dt-timezone
+    _NS = Namespace("http://www.w3.org/2001/XMLSchema#")
diff --git a/requirements.dev.txt b/requirements.dev.txt
index be3f8fa3..e0b9cf7a 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -6,4 +6,4 @@ coverage
 flake8
 doctest-ignore-unicode==0.1.2
 berkeleydb
-black==21.7b0
+black==21.6b0
diff --git a/setup.py b/setup.py
index a769b255..7c9e7ec3 100644
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ kwargs["tests_require"] = [
     "nose==1.3.7",
     "nose-timer",
     "coverage",
-    "black==21.7b0",
+    "black==21.6b0",
     "flake8",
     "doctest-ignore-unicode==0.1.2",
 ]