Update some python code to remove errors

Also excludes the dev directory from linting

.github/workflows/testing.yml

@@ -46,7 +46,7 @@ jobs:
       run: |
         cd ${CLAW}/amrclaw
         # stop the build if there are Python syntax errors or undefined names
-        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics --exclude dev
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest

examples/acoustics_2d_adjoint/run_adjoint_flagging.py

@@ -4,17 +4,17 @@
 
 import os
 
-currentdir = os.getcwd()
-adjointdir = currentdir + '/adjoint'
+current_dir = os.getcwd()
+adjoint_dir = os.path.join(current_dir, "adjoint")
 
 # Running the adjoint problem
-os.chdir(adjointdir)
+os.chdir(adjoint_dir)
 os.system('make new')
 os.system('make .plots')
 
 # Running the forward problem
-os.chdir(currentdir)
+os.chdir(current_dir)
 os.system('make new')
 os.system('make .plots')
 
-print 'Finished running example with adjoint refinement'
+print('Finished running example with adjoint refinement')

src/python/amrclaw/data.py

@@ -228,7 +228,7 @@ def __init__(self, num_dim, region=None):
             self.convert_old_region(region)
 
 
-    def convert_old_region(region):
+    def convert_old_region(self, region):
         """
         Take a list region = [minlevel, maxlevel, t1, t2, x1, x2, y1, y2]
         in the old style and convert to a new flagregion.
@@ -266,10 +266,10 @@ def __init__(self,flagregions=None,num_dim=2):
 
         super(FlagRegionData,self).__init__()
 
-        if flagregions is None or not isinstance(regions,list):
+        if flagregions is None or not isinstance(flagregions,list):
             self.add_attribute('flagregions',[])
         else:
-            self.add_attribute('flagregions',regions)
+            self.add_attribute('flagregions',flagregions)
         self.add_attribute('num_dim',num_dim)
 
 

tests/advection_1d_example1/setplot.py

@@ -11,7 +11,7 @@
 from numpy import linspace
 probdata = ClawData()
 probdata.read('setprob.data', force=True)
-print "Parameters: u = %g, beta = %g" % (probdata.u, probdata.beta)
+print("Parameters: u = %g, beta = %g" % (probdata.u, probdata.beta))
 
 def qtrue(x,t):
     """