Final fix for pylint issue 4118

Details:

* Pylint issue pylint-dev/pylint#4118 introduced in
  Pylint 2.7.0 was fixed in Pylint 2.10.0.

  This change accomodates the fix by removing the circumvention of
  globally disabling warning R801, and by increasing the minimum version
  of Pylint to 2.10.0 for Python >=3.6. The Pylint version with the
  issue is not supported on earlier Python versions.

  No change log entry is needed, since the circumvention was introduced
  in the same package version.

Signed-off-by: Andreas Maier <andreas.r.maier@gmx.de>

dev-requirements.txt

@@ -79,12 +79,16 @@ Babel>=2.7.0
 # Pylint 1.x / astroid 1.x supports py27 and py34/35/36
 # Pylint 2.0 / astroid 2.0 removed py27, added py37
 # Pylint 2.4 / astroid 2.3 removed py34
+# Pylint 2.7 / astroid 2.5 removed py35
+# Pylint 2.7-2.9 had issue https://github.com/PyCQA/pylint/issues/4118
 pylint>=1.6.4,<2.0.0; python_version == '2.7'
 pylint>=2.2.2,<2.4; python_version == '3.4'
-pylint>=2.4.4; python_version >= '3.5'
+pylint>=2.4.4; python_version == '3.5'
+pylint>=2.10.0; python_version >= '3.6'
 astroid>=1.4.9,<2.0.0; python_version == '2.7'
 astroid>=2.1.0,<2.3; python_version == '3.4'
-astroid>=2.3.3; python_version >= '3.5'
+astroid>=2.3.3; python_version == '3.5'
+astroid>=2.7.2; python_version >= '3.6'
 # typed-ast is used by astroid on py34..py37
 # typed-ast 1.4.0 removed support for Python 3.4.
 typed-ast>=1.3.0,<1.4.0; python_version == '3.4' and implementation_name=='cpython'

minimum-constraints.txt

@@ -180,10 +180,12 @@ Babel==2.7.0
 # PyLint (no imports, invoked via pylint script) - does not support py3:
 pylint==1.6.4; python_version == '2.7'
 pylint==2.2.2; python_version == '3.4'
-pylint==2.4.4; python_version >= '3.5'
+pylint==2.4.4; python_version == '3.5'
+pylint==2.10.0; python_version >= '3.6'
 astroid==1.4.9; python_version == '2.7'
 astroid==2.1.0; python_version == '3.4'
-astroid==2.3.3; python_version >= '3.5'
+astroid==2.3.3; python_version == '3.5'
+astroid==2.7.2; python_version >= '3.6'
 # typed-ast is used by astroid on py34..py37
 typed-ast==1.3.0; python_version == '3.4' and implementation_name=='cpython'
 typed-ast==1.4.0; python_version >= '3.5' and python_version < '3.8' and implementation_name=='cpython'

pylintrc

@@ -68,11 +68,7 @@ disable=I0011,
         wildcard-import, unused-wildcard-import,
         locally-enabled, superfluous-parens, useless-object-inheritance,
         consider-using-set-comprehension, unnecessary-pass, useless-return,
-        bad-option-value, redundant-u-string-prefix, consider-using-f-string,
-        R0801
-
-# TODO: R0801 was added due to https://github.com/PyCQA/pylint/issues/4118.
-#       Remove it again once fixed.
+        bad-option-value, redundant-u-string-prefix, consider-using-f-string
 
 # Note: "useless-object-inheritance" is python 3 only. In Python 2,
 #        "new-style" objects must inherit from object, or else