From 84220627a211b4a702bc2434c2a6bb37a9f1e471 Mon Sep 17 00:00:00 2001
From: David Ketcheson <dketch@gmail.com>
Date: Thu, 2 Nov 2023 13:04:49 +0300
Subject: [PATCH] Drop Python 2 support, remove imports of six and __future__

---
 dev/fix_maxmx.py                         |  3 ---
 dev/tests/run_regression_tests.py        |  3 ---
 dev/tests/run_regression_tests_mandli.py |  3 ---
 src/python/amrclaw/compare_gauges.py     |  3 ---
 src/python/amrclaw/data.py               | 10 +++-------
 5 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/dev/fix_maxmx.py b/dev/fix_maxmx.py
index 4a0174895..89b6e7197 100644
--- a/dev/fix_maxmx.py
+++ b/dev/fix_maxmx.py
@@ -9,10 +9,7 @@
 # Now supports wildcards in list of targetfiles.
 #
 
-from __future__ import absolute_import
-from __future__ import print_function
 import os,sys,glob
-from six.moves import zip
 
 rootdir = '.'
 targetfiles = ['*.f*']
diff --git a/dev/tests/run_regression_tests.py b/dev/tests/run_regression_tests.py
index d361b66ff..9f9131733 100644
--- a/dev/tests/run_regression_tests.py
+++ b/dev/tests/run_regression_tests.py
@@ -8,15 +8,12 @@
 "Test 2", etc.
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
 from setrun_regression import setrun
 from setplot import setplot
 from clawpack.clawutil.runclaw import runclaw
 from clawpack.visclaw.plotclaw import plotclaw
 from clawpack.clawutil.compare_regression_tests import compare_regression_tests
 import os,sys
-from six.moves import input
 
 
 def run_regression_tests(regression_dir="_regression_tests", \
diff --git a/dev/tests/run_regression_tests_mandli.py b/dev/tests/run_regression_tests_mandli.py
index 4a4e15ece..c5e0a5e8c 100644
--- a/dev/tests/run_regression_tests_mandli.py
+++ b/dev/tests/run_regression_tests_mandli.py
@@ -8,10 +8,7 @@
 "Test 2", etc.
 """
 
-from __future__ import absolute_import
-from __future__ import print_function
 import clawpack.clawutil.batch as batch
-from six.moves import input
 
 # from setrun_regression import setrun
 # from setplot import setplot
diff --git a/src/python/amrclaw/compare_gauges.py b/src/python/amrclaw/compare_gauges.py
index edebe62eb..5e14b0101 100755
--- a/src/python/amrclaw/compare_gauges.py
+++ b/src/python/amrclaw/compare_gauges.py
@@ -1,14 +1,11 @@
 #!/usr/bin/env python
 
-from __future__ import absolute_import
-from __future__ import print_function
 import sys
 
 import numpy
 import matplotlib.pyplot as plt
 
 import clawpack.pyclaw.gauges as gauges
-from six.moves import range
 
 # Load all gauges
 
diff --git a/src/python/amrclaw/data.py b/src/python/amrclaw/data.py
index 897457bd3..a3406cc15 100755
--- a/src/python/amrclaw/data.py
+++ b/src/python/amrclaw/data.py
@@ -2,13 +2,9 @@
 
 """Base AMRClaw data class for writing out data parameter files."""
 
-from __future__ import print_function
-from __future__ import absolute_import
 import os
 
 import clawpack.clawutil.data
-import six
-from six.moves import range
 
 class AmrclawInputData(clawpack.clawutil.data.ClawData):
     r"""
@@ -391,7 +387,7 @@ def __init__(self, num_dim=None):
         super(GaugeData,self).__init__()
         self.add_attribute('gauges',[])
 
-        for (value, default) in six.iteritems(self.defaults):
+        for (value, default) in self.defaults.items()):
             self.add_attribute(value, default)
 
 
@@ -475,7 +471,7 @@ def write(self, num_eqn, num_aux, out_file='gauges.data',
         self._out_file.write("# q fields\n")
         for gauge_num in self.gauge_numbers:
             # Handle special values of "all" and "none"
-            if isinstance(self.q_out_fields[gauge_num], six.string_types):
+            if isinstance(self.q_out_fields[gauge_num], str):
                 if self.q_out_fields[gauge_num].lower() == 'all':
                     self._out_file.write("%s\n" % " ".join(['True'] * num_eqn))
                 elif self.q_out_fields[gauge_num].lower() == 'none': 
@@ -498,7 +494,7 @@ def write(self, num_eqn, num_aux, out_file='gauges.data',
             self._out_file.write("# aux fields\n")
             for gauge_num in self.gauge_numbers:
                 # Handle special values of "all" and "none"
-                if isinstance(self.aux_out_fields[gauge_num], six.string_types):
+                if isinstance(self.aux_out_fields[gauge_num], str):
                     if self.aux_out_fields[gauge_num].lower() == 'all':
                         self._out_file.write("%s\n" % " ".join(['True'] * num_aux))
                     elif self.aux_out_fields[gauge_num].lower() == 'none':