File python-casacore-no-six.patch of Package python-casacore

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File python-casacore-no-six.patch of Package python-casacore (Revision 1bd7a9b8da614714c507735c43169925)

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From afb5cbf88eb6e78dd2aefe53d5ddf5179e1f8110 Mon Sep 17 00:00:00 2001
From: Tammo Jan Dijkema <dijkema@astron.nl>
Date: Wed, 28 Aug 2024 10:41:12 +0200
Subject: [PATCH] Remove dependency on six

diff --git a/casacore/fitting/fitting.py b/casacore/fitting/fitting.py
index b0ec1e05..42d9b106 100644
--- a/casacore/fitting/fitting.py
+++ b/casacore/fitting/fitting.py
@@ -2,9 +2,7 @@
 
 from ._fitting import fitting
 import numpy as NUM
-import six
 from casacore.functionals import *
-from six import string_types
 
 
 class fitserver(object):
@@ -102,13 +100,13 @@ def init(self, n=0, ftype="real", colfac=1.0e-8, lmfac=1.0e-3, fid=0):
             return False
 
     def _gettype(self, ftype):
-        if isinstance(ftype, string_types):
+        if isinstance(ftype, str):
             ftype = ftype.lower()
             if ftype not in self._typeids:
                 raise TypeError("Illegal fitting type")
             else:
                 return self._typeids[ftype]
-        elif isinstance(ftype, six.integer_types):
+        elif isinstance(ftype, int):
             if ftype not in self._typeids.values():
                 raise TypeError("Illegal fitting type")
         else:
diff --git a/casacore/functionals/functional.py b/casacore/functionals/functional.py
index 4f671881..301b40de 100644
--- a/casacore/functionals/functional.py
+++ b/casacore/functionals/functional.py
@@ -1,4 +1,3 @@
-from six import string_types, integer_types
 from ._functionals import _functional
 
 import numpy
@@ -20,19 +19,19 @@ def _decorator(func):
 
 class functional(_functional):
     def __init__(self, name=None, order=-1, params=None, mode=None, dtype=0):
-        if isinstance(dtype, string_types):
+        if isinstance(dtype, str):
             dtypes = {'real': 0, 'complex': 1}
             dtype = dtypes.get(dtype.lower())
         if numpy.iscomplexobj(params):
             dtype = 1
         self._dtype = dtype
         progtext = ""
-        if not isinstance(name, string_types):
+        if not isinstance(name, str):
             raise TypeError("'name' was not of type string")
-        if not (isinstance(order, integer_types) or isinstance(order, string_types)):
+        if not (isinstance(order, int) or isinstance(order, str)):
             raise TypeError("'order' was not of type integer or string")
         else:
-            if isinstance(order, string_types):
+            if isinstance(order, str):
                 progtext = order
                 order = -1
         # our own functionals server
diff --git a/casacore/images/image.py b/casacore/images/image.py
index ef4ce8dc..c931f73d 100644
--- a/casacore/images/image.py
+++ b/casacore/images/image.py
@@ -25,7 +25,6 @@
 
 from __future__ import print_function
 
-from six import string_types, integer_types
 from ._images import Image
 import numpy
 import numpy.ma as nma
@@ -128,7 +127,7 @@ def __init__(self, imagename, axis=0, maskname="", images=(), values=None,
             if isinstance(imagename, tuple) or isinstance(imagename, list):
                 if len(imagename) == 0:
                     raise ValueError('No images given in list or tuple')
-                if isinstance(imagename[0], string_types):
+                if isinstance(imagename[0], str):
                     # Concatenate from image names
                     Image.__init__(self, imagename, axis)
                     opened = True
@@ -137,7 +136,7 @@ def __init__(self, imagename, axis=0, maskname="", images=(), values=None,
                     Image.__init__(self, imagename, axis, 0, 0)
                     opened = True
             if not opened:
-                if not isinstance(imagename, string_types):
+                if not isinstance(imagename, str):
                     raise ValueError("first argument must be name or" +
                                      " sequence of images or names")
                 if shape is None:
@@ -259,7 +258,7 @@ def attrgetrow(self, groupname, key, value=None):
         It can only be used for unique attribute keys. An IndexError exception
         is raised if no or multiple matches are found.
         """
-        if not isinstance(key, string_types):
+        if not isinstance(key, str):
             return self._attrgetrow(groupname, key)
         # The key is an attribute name whose value has to be found.
         rownrs = self.attrfindrows(groupname, key, value)
@@ -610,7 +609,7 @@ def view(self, tempname='/tmp/tempimage'):
 
     def _adaptAxes(self, axes):
         # If axes is a single integer value, turn it into a list.
-        if isinstance(axes, integer_types):
+        if isinstance(axes, int):
             axes = [axes]
         # ImageProxy expects Fortran-numbered axes.
         # So reverse the axes.
diff --git a/casacore/measures/__init__.py b/casacore/measures/__init__.py
index b91a1255..89c9cf97 100755
--- a/casacore/measures/__init__.py
+++ b/casacore/measures/__init__.py
@@ -31,7 +31,6 @@
 import casacore.quanta as dq
 import os
 
-from six import string_types
 
 if 'MEASURESDATA' in os.environ.keys():
     if 'AIPSPATH' not in os.environ.keys():
@@ -436,7 +435,7 @@ def tofrequency(self, rf, v0, rfq):
         """
         if is_measure(rfq) and rfq['type'] == 'frequency':
             rfq = dq.quantity(rfq['m0'])
-        elif isinstance(rfq, string_types):
+        elif isinstance(rfq, str):
             rfq = dq.quantity(rfq)
         if is_measure(v0) and v0['type'] == 'doppler' \
                 and dq.is_quantity(rfq) \
@@ -488,7 +487,7 @@ def todoppler(self, rf, v0, rfq):
         """
         if is_measure(rfq) and rfq['type'] == 'frequency':
             rfq = dq.quantity(rfq['m0'])
-        elif isinstance(rfq, string_types):
+        elif isinstance(rfq, str):
             rfq = dq.quantity(rfq)
         if is_measure(v0):
             if v0['type'] == 'radialvelocity':
@@ -823,7 +822,7 @@ def riseset(self, crd, ev="5deg"):
         """
 
         a = self.rise(crd, ev)
-        if isinstance(a['rise'], string_types):
+        if isinstance(a['rise'], str):
             return {"rise": {"last": a[0], "utc": a[0]},
                     "set": {"last": a[1], "utc": a[1]},
                     "solved": False}
diff --git a/casacore/quanta/quantity.py b/casacore/quanta/quantity.py
index 0e92a009..ddc23755 100644
--- a/casacore/quanta/quantity.py
+++ b/casacore/quanta/quantity.py
@@ -1,4 +1,3 @@
-from six import string_types
 from ._quanta import QuantVec
 from ._quanta import Quantity
 from ._quanta import from_string, from_dict, from_dict_v
@@ -52,7 +51,7 @@ def quantity(*args):
 
     """
     if len(args) == 1:
-        if isinstance(args[0], string_types):
+        if isinstance(args[0], str):
             # use copy constructor to create quantity from string
             return Quantity(from_string(args[0]))
         elif isinstance(args[0], dict):
diff --git a/casacore/tables/msutil.py b/casacore/tables/msutil.py
index 6d49908f..eedb8e1d 100644
--- a/casacore/tables/msutil.py
+++ b/casacore/tables/msutil.py
@@ -25,7 +25,6 @@
 #
 from __future__ import print_function
 
-from six import string_types
 import numpy as np
 from casacore.tables.table import (table, taql,
                                    _required_ms_desc,
@@ -315,7 +314,7 @@ def msconcat(names, newname, concatTime=False):
     for key in keywords:
         if key != 'SORTED_TABLE':
             val = keywords[key]
-            if isinstance(val, string_types):
+            if isinstance(val, str):
                 tsub = table(val, ack=False)
                 tsubn = tsub.copy(newname + '/' + key, deep=True)
                 tnew.putkeyword(key, tsubn)
diff --git a/casacore/tables/table.py b/casacore/tables/table.py
index 189f0dae..f4f164ae 100755
--- a/casacore/tables/table.py
+++ b/casacore/tables/table.py
@@ -38,7 +38,6 @@
 
 from __future__ import print_function
 
-from six import string_types
 from ._tables import (Table,
                       _default_ms,
                       _default_ms_subtable,
@@ -47,8 +46,6 @@
 
 from .tablehelper import (_add_prefix, _remove_prefix, _do_remove_prefix,
                           _format_row)
-import six
-
 
 def default_ms(name, tabdesc=None, dminfo=None):
     """
@@ -344,7 +341,7 @@ def __init__(self, tablename, tabledesc=False, nrow=0, readonly=True,
             #  - concatenate open tables (ConcatTable)
             tabname = _remove_prefix(tablename)
             lockopt = lockoptions
-            if isinstance(lockoptions, string_types):
+            if isinstance(lockoptions, str):
                 lockopt = {'option': lockoptions}
             if isinstance(tabledesc, dict):
                 # Create a new table.
@@ -371,7 +368,7 @@ def __init__(self, tablename, tabledesc=False, nrow=0, readonly=True,
                     opt = 5
                     if _delete:
                         opt = 6
-                if isinstance(tabname, string_types):
+                if isinstance(tabname, str):
                     Table.__init__(self, tabname, lockopt, opt)
                     if ack:
                         print('Successful', typstr, 'open of',
@@ -379,7 +376,7 @@ def __init__(self, tablename, tabledesc=False, nrow=0, readonly=True,
                               tabname + ':',
                               self.ncols(), 'columns,',
                               self.nrows(), 'rows')
-                elif isinstance(tabname[0], string_types):
+                elif isinstance(tabname[0], str):
                     # Concatenate and open named tables.
                     Table.__init__(self, tabname, concatsubtables,
                                    lockopt, opt)
@@ -1277,7 +1274,7 @@ def fieldnames(self, keyword=''):
         of the struct value of the i-th keyword.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._getfieldnames('', keyword, -1)
         else:
             return self._getfieldnames('', '', keyword)
@@ -1299,7 +1296,7 @@ def colfieldnames(self, columnname, keyword=''):
         of the struct value of the i-th keyword.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._getfieldnames(columnname, keyword, -1)
         else:
             return self._getfieldnames(columnname, '', keyword)
@@ -1327,7 +1324,7 @@ def getkeyword(self, keyword):
         of the i-th keyword.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._getkeyword('', keyword, -1)
         else:
             return self._getkeyword('', '', keyword)
@@ -1338,7 +1335,7 @@ def getcolkeyword(self, columnname, keyword):
         It is similar to :func:`getkeyword`.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._getkeyword(columnname, keyword, -1)
         else:
             return self._getkeyword(columnname, '', keyword)
@@ -1366,7 +1363,7 @@ def getsubtables(self):
         keyset = self.getkeywords()
         names = []
         for key, value in keyset.items():
-            if isinstance(value, string_types) and value.find('Table: ') == 0:
+            if isinstance(value, str) and value.find('Table: ') == 0:
                 names.append(_do_remove_prefix(value))
         return names
 
@@ -1402,7 +1399,7 @@ def putkeyword(self, keyword, value, makesubrecord=False):
         val = value
         if isinstance(val, table):
             val = _add_prefix(val.name())
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._putkeyword('', keyword, -1, makesubrecord, val)
         else:
             return self._putkeyword('', '', keyword, makesubrecord, val)
@@ -1416,7 +1413,7 @@ def putcolkeyword(self, columnname, keyword, value, makesubrecord=False):
         val = value
         if isinstance(val, table):
             val = _add_prefix(val.name())
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             return self._putkeyword(columnname, keyword, -1,
                                     makesubrecord, val)
         else:
@@ -1451,7 +1448,7 @@ def removekeyword(self, keyword):
         the i-th keyword.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             self._removekeyword('', keyword, -1)
         else:
             self._removekeyword('', '', keyword)
@@ -1462,7 +1459,7 @@ def removecolkeyword(self, columnname, keyword):
         It is similar to :func:`removekeyword`.
 
         """
-        if isinstance(keyword, string_types):
+        if isinstance(keyword, str):
             self._removekeyword(columnname, keyword, -1)
         else:
             self._removekeyword(columnname, '', keyword)
@@ -1482,7 +1479,7 @@ def getdesc(self, actual=True):
         # as these aren't valid. (See tabledefinehypercolumn)
         hcdefs = tabledesc.get('_define_hypercolumn_', {})
 
-        for c, hcdef in six.iteritems(hcdefs):
+        for c, hcdef in hcdefs.items():
             if "HCcoordnames" in hcdef and len(hcdef["HCcoordnames"]) == 0:
                 del hcdef["HCcoordnames"]
             if "HCidnames" in hcdef and len(hcdef["HCidnames"]) == 0:
diff --git a/casacore/tables/tablehelper.py b/casacore/tables/tablehelper.py
index bc40b8be..7de6d2af 100644
--- a/casacore/tables/tablehelper.py
+++ b/casacore/tables/tablehelper.py
@@ -25,7 +25,6 @@
 #
 # $Id: tableutil.py,v 1.6 2006/11/08 00:12:55 gvandiep Exp $
 
-from six import string_types, integer_types
 import numpy
 import re
 from ..quanta import quantity
@@ -42,7 +41,7 @@ def _add_prefix(name):
 def _do_remove_prefix(name):
     """Strip the possible prefix 'Table: ' from a table name."""
     res = name
-    if isinstance(res, string_types):
+    if isinstance(res, str):
         if res.find('Table: ') == 0:
             res = res.replace('Table: ', '', 1)
     return res
@@ -50,7 +49,7 @@ def _do_remove_prefix(name):
 
 def _remove_prefix(name):
     """Strip the possible prefix 'Table: ' from one or more table names."""
-    if isinstance(name, string_types):
+    if isinstance(name, str):
         return _do_remove_prefix(name)
     return [_do_remove_prefix(nm) for nm in name]
 
@@ -114,13 +113,13 @@ def _check_key_slice(key, nrows, name):
 def _value_type_name(value):
     if isinstance(value, bool):
         return 'boolean'
-    if isinstance(value, integer_types):
+    if isinstance(value, int):
         return 'integer'
     if isinstance(value, float):
         return 'double'
     if isinstance(value, complex):
         return 'dcomplex'
-    if isinstance(value, string_types):
+    if isinstance(value, str):
         return 'string'
     if isinstance(value, dict):
         return 'record'
diff --git a/casacore/tables/tableutil.py b/casacore/tables/tableutil.py
index 9ec24ed3..4563fde5 100755
--- a/casacore/tables/tableutil.py
+++ b/casacore/tables/tableutil.py
@@ -28,7 +28,6 @@
 
 from collections import defaultdict
 
-import six
 from .table import table
 from .tablehelper import _remove_prefix, _value_type_name
 
@@ -525,7 +524,7 @@ def __init__(self):
 
   # Iterate through the table columns, grouping them
   # by their dataManagerGroup
-  for c, d in six.iteritems(tabdesc):
+  for c, d in tabdesc.items():
     if c in ('_define_hypercolumn_', '_keywords_', '_private_keywords_'):
       continue
 
@@ -568,7 +567,7 @@ def __init__(self):
       'SPEC' : dm_group.spec,
       'SEQNR': i
     } for i, (group, dm_group)
-    in enumerate(six.iteritems(dm_groups))
+    in enumerate(dm_groups.items())
   }
 
 # Create the old glish names for them.
diff --git a/casacore/util/substitute.py b/casacore/util/substitute.py
index f3203cbf..46bad62c 100644
--- a/casacore/util/substitute.py
+++ b/casacore/util/substitute.py
@@ -23,7 +23,6 @@
 #                        520 Edgemont Road
 #                        Charlottesville, VA 22903-2475 USA
 
-from six import string_types
 import numpy as np
 
 __all__ = ['getlocals', 'getvariable', 'substitute']
@@ -266,7 +265,7 @@ def substitutevar(v):
 def substituteonevar(v):
     # A string needs to be enclosed in quotes.
     # A vector value is enclosed in square brackets and separated by commas.
-    if isinstance(v, string_types):
+    if isinstance(v, str):
         return substitutestring(v)
     # A numeric or boolean value is converted to a string.
     # A vector value is enclosed in square brackets and separated by commas.
diff --git a/pyproject.toml b/pyproject.toml
index 28ac9d58..99ea3d0b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,6 @@ classifiers=[
 ]
 dependencies = [
     "numpy",
-    "six",
 ]
 
 [project.urls]

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