feat: remove the python2 pilot starter

Author: fstagni

.github/workflows/basic.yml

@@ -134,26 +134,6 @@ jobs:
         env:
           REFERENCE_BRANCH: ${{ github['base_ref'] || github['head_ref'] }}
 
-  pylint-py27:
-    name: Pylint for Python 2.7 in Pilot files
-    runs-on: ubuntu-latest
-    if: github.event_name != 'push' || github.repository == 'DIRACGrid/DIRAC'
-    steps:
-      - uses: actions/checkout@v6
-      - name: Fail-fast for outdated pipelines
-        run: .github/workflows/fail-fast.sh
-      - name: prepare environment
-        run: |
-          conda config --set add_pip_as_python_dependency false
-          conda create -c conda-forge -n test-env python=2.7 pylint=1.9.2 astroid=1.6.5
-      - name: run pilot wrapper test
-        run: |
-          eval "$(conda shell.bash hook)" && conda activate test-env
-          pylint -j 0 -E \
-            tests/Integration/WorkloadManagementSystem/Test_GenerateAndExecutePilotWrapper.py \
-            src/DIRAC/WorkloadManagementSystem/Utilities/PilotWrapper.py \
-            src/DIRAC/Resources/Computing/BatchSystems/*.py
-
   diracx:
     name: DiracX Unit Tests
     runs-on: ubuntu-latest

docs/source/AdministratorGuide/Systems/WorkloadManagement/Pilots/index.rst

@@ -40,7 +40,7 @@ where:
 - configure means adding dirac specific configuration files (which, at a minimum, should include the location of a DIRAC configuration service)
 
 
-A pilot has to run on each and every computing resource type, provided that Python 2.6+ is on the WN.
+A pilot has to run on each and every computing resource type, provided that Python 3.6+ is on the WN.
 The same pilot script can be used everywhere.
 
 .. image:: Pilots2.png

setup.cfg

@@ -326,10 +326,9 @@ console_scripts =
 [pycodestyle]
 # Pep8 codes:
 # E203 - Whitespace before ':' (spaces should be present for list slices)
-# E211 - Whitespace before '(' (black incorrectly formats exec when in Python 2 mode)
 # E266 - Too many leading '#' for block comment
 # E402 - module level import not at top of file (for scripts)
 # W503 - line break before binary operator (stupid, complains after or before...)
-ignore = E203, E211, E266, E402, W503
+ignore = E203, E266, E402, W503
 # TODO: This should be reduced back to 120 at some point
 max_line_length=130

src/DIRAC/Core/Utilities/Plotting/FileCoding.py

@@ -41,8 +41,7 @@ def extractRequestFromFileId(fileId):
     if compressType == "Z":
         gLogger.info("Compressed request, uncompressing")
         try:
-            # Encoding is only required for Python 2 and can be removed when Python 2 support is no longer needed
-            stub = base64.urlsafe_b64decode(stub.encode())
+            stub = base64.urlsafe_b64decode(stub)
         except Exception as e:
             gLogger.error("Oops! Plot request is not properly encoded!", str(e))
             return S_ERROR(f"Oops! Plot request is not properly encoded!: {str(e)}")

src/DIRAC/Resources/Computing/BatchSystems/Condor.py

@@ -3,9 +3,6 @@
     LocalComputingElement and SSHComputingElement classes
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
 import json
 import re
 import tempfile

src/DIRAC/Resources/Computing/BatchSystems/GE.py

@@ -14,9 +14,6 @@
     SubmitOption = -l ct=6000
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
 import re
 import shlex
 import subprocess

src/DIRAC/Resources/Computing/BatchSystems/Host.py

@@ -8,10 +8,6 @@
     with LocalComputingElement or SSHComputingElement objects
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
-
 import os
 import glob
 import shutil

src/DIRAC/Resources/Computing/BatchSystems/LSF.py

@@ -9,9 +9,6 @@
     LocalComputingElement and SSHComputingElement classes
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
 import re
 import subprocess
 import shlex

src/DIRAC/Resources/Computing/BatchSystems/OAR.py

@@ -9,10 +9,6 @@
     LocalComputingElement and SSHComputingElement classes
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
-
 import subprocess
 import shlex
 import os

src/DIRAC/Resources/Computing/BatchSystems/SLURM.py

@@ -3,10 +3,6 @@
     LocalComputingElement and SSHComputingElement classes
 """
 
-from __future__ import print_function
-from __future__ import absolute_import
-from __future__ import division
-
 import os
 import re
 import subprocess