Removal of python-future compatibility code

.github/workflows/workflow.yml

@@ -18,6 +18,7 @@ jobs:
           - '3.9'
           - '3.10'
           - '3.11'
+          - '3.12'
         os:
           - ubuntu-22.04
         include:

README.rst

@@ -19,7 +19,7 @@ Dependencies
 Direct dependencies of OMERO.py are:
 
 - `ZeroC IcePy 3.6`_
-- future
+- future (deprecated)
 - numpy
 - Pillow >= 10.0.0
 

docs/conf.py

@@ -55,7 +55,7 @@
 source_suffix = ".rst"
 
 # Build docs without external dependencies
-autodoc_mock_imports = ["omero", "omero_ext", "past", "future", 
+autodoc_mock_imports = ["omero", "omero_ext",
                         "Ice", "IceImport", "Glacier2", "pytest",
                         "appdirs", "IcePy", "omero_version",
                         "IceGrid", "mx", "matplotlib",

examples/projection_1.py

@@ -33,8 +33,7 @@
 # @param method  the method of projecting (maximum, average)
 # @return new pixels object containing the projection.
 #
-from builtins import range
-from builtins import object
+
 import sys
 import omero
 import omero.cli

manualtests/populate_roi_test.py

@@ -3,7 +3,6 @@
 """
 ...
 """
-from __future__ import print_function
 
 #
 #  Copyright (C) 2009 University of Dundee. All rights reserved.
@@ -24,8 +23,6 @@
 #
 
 
-from builtins import range
-from builtins import object
 import unittest
 import os
 

setup.py

@@ -6,7 +6,6 @@
 
    Use is subject to license terms supplied in LICENSE.txt
 """
-from __future__ import print_function
 
 import glob
 import sys
@@ -18,31 +17,18 @@
     find_packages,
 )
 
-try:
-    from StringIO import StringIO
-    from StringIO import StringIO as BytesIO
-except ImportError:
-    # Python 3
-    from io import StringIO
-    from io import BytesIO
+from io import StringIO
+from io import BytesIO
 
 from shutil import (
     copy,
     rmtree,
 )
 
-try:
-    from urllib.request import urlopen
-except ImportError:
-    # Python 2
-    from urllib import urlopen
+from urllib.request import urlopen
 from zipfile import ZipFile
 
-try:
-    import configparser
-except ImportError:
-    # Python 2
-    import ConfigParser as configparser
+import configparser
 
 
 def get_blitz_location():

src/omero/__init__.py

@@ -120,14 +120,3 @@ def proxy_to_instance(proxy_string, default=None):
         raise ClientError(("Invalid proxy string: %s. "
                           "Correct format is Class:ID") % proxy_string)
     return kls(proxy_string)
-
-#
-# Workaround for warning messages produced in
-# code-generated Ice files.
-#
-if _sys.version_info[:2] == (2, 6):
-    import warnings
-    warnings.filterwarnings(
-        action='ignore',
-        message='BaseException.message has been deprecated as of Python 2.6',
-        category=DeprecationWarning)

src/omero/callbacks.py

@@ -14,11 +14,6 @@
   module for backwards compatibility.
 """
 
-from __future__ import division
-
-from builtins import str
-from future.utils import native_str
-from past.utils import old_div
 import Ice
 import logging
 import threading
@@ -71,7 +66,7 @@ def __init__(self, adapter_or_client, process, poll=True, category=None):
         self.adapter, self.category = \
             adapter_and_category(adapter_or_client, category)
 
-        self.id = Ice.Identity(native_str(uuid.uuid4()), self.category)
+        self.id = Ice.Identity(str(uuid.uuid4()), self.category)
         self.prx = self.adapter.add(self, self.id)  # OK ADAPTER USAGE
         self.prx = omero.grid.ProcessCallbackPrx.uncheckedCast(self.prx)
         process.registerCallback(self.prx)
@@ -90,7 +85,7 @@ def block(self, ms):
             except Exception as e:
                 PROC_LOG.warn("Error calling poll: %s" % e)
 
-        self.event.wait(old_div(float(ms), 1000))
+        self.event.wait(ms / 1000)
         if self.event.isSet():
             return self.result
         return None
@@ -146,7 +141,7 @@ def __init__(self, adapter_or_client, handle, category=None,
         self.adapter, self.category = \
             adapter_and_category(adapter_or_client, category)
 
-        self.id = Ice.Identity(native_str(uuid.uuid4()), self.category)
+        self.id = Ice.Identity(str(uuid.uuid4()), self.category)
         self.prx = self.adapter.add(self, self.id)  # OK ADAPTER USAGE
         self.prx = omero.cmd.CmdCallbackPrx.uncheckedCast(self.prx)
         handle.addCallback(self.prx)
@@ -259,7 +254,7 @@ def loop(self, loops, ms):
         if found:
             return self.getResponse()
         else:
-            waited = (old_div(ms, 1000.0)) * loops
+            waited = (ms / 1000.0) * loops
             raise omero.LockTimeout(
                 None, None, "Command unfinished after %s seconds" % waited,
                 5000, int(waited))
@@ -271,7 +266,7 @@ def block(self, ms):
         which case it returns immediately with true. If false
         is returned, then the timeout was reached.
         """
-        self.event.wait(old_div(float(ms), 1000))
+        self.event.wait(ms / 1000)
         return self.event.isSet()
 
     #