Convert some python files to python3

These aren't actually used in ESMPy so haven't been causing an issue,
but can create errors in some circumstances.

Resolves #331

src/addon/esmpy/doc/api.rst

@@ -941,7 +941,7 @@ MPI.Spawn
             raise ValueError('Could not connect to parent - ' + usage)
 
         # worker code goes here, regridding etc..
-        print "Hello World from PET #"+str(rank)
+        print("Hello World from PET #"+str(rank))
 
         # Shutdown
         comm.Disconnect()

src/addon/esmpy/examples/mpi_spawn_regrid.py

@@ -11,6 +11,7 @@
 
 from esmpy.util.cache_data import DATA_DIR
 from esmpy.util.exceptions import DataMissing
+from functools import reduce
 
 # The data files can be retrieved from the ESMF data repository by uncommenting the
 # following block of code:
@@ -94,8 +95,8 @@ def compute_error(dstfield, xctfield):
         meanrelerr = relerr / num_nodes
 
     meanrelerr = relerr / num_nodes
-    print "ESMPy regridding as a spawned MPI process:"
-    print "  interpolation mean relative error = {0}".format(meanrelerr)
+    print("ESMPy regridding as a spawned MPI process:")
+    print("  interpolation mean relative error = {0}".format(meanrelerr))
 
 
 ########################################### MAIN #############################

src/addon/esmpy/src/esmpy/fragments/dump_esmf_internal_info.py

@@ -1,3 +1,4 @@
+from functools import reduce
 # This file contains old routines to dump internal ESMF info from ESMPy Grid and Field objects
 # This code is likely obsolete, but was useful in the original development process ..
 #    so it is being kept for a rainy day situation
@@ -6,11 +7,11 @@ def dump_gridinfo(self, stagger):
 
     [x,y,z] = [0,1,2]
 
-    print "bounds - low, high"
-    print self.lower_bounds[stagger], \
-                self.upper_bounds[stagger]
-    print "shape - [x, y, z] or [lat, lon]"
-    print self.coords[stagger][0].shape
+    print("bounds - low, high")
+    print(self.lower_bounds[stagger], \
+                self.upper_bounds[stagger])
+    print("shape - [x, y, z] or [lat, lon]")
+    print(self.coords[stagger][0].shape)
 
     if self.rank == 2:
         return [self.coords[stagger][x], self.coords[stagger][y]]
@@ -20,11 +21,11 @@ def dump_gridinfo(self, stagger):
 def dump_gridinfo_lower(self, stagger):
     [x, y, z] = [0, 1, 2]
 
-    print "bounds - low, high"
-    print self.lower_bounds[stagger], \
-                self.upper_bounds[stagger]
-    print "shape - [x, y, z] or [lat, lon]"
-    print self.coords[stagger][0].shape
+    print("bounds - low, high")
+    print(self.lower_bounds[stagger], \
+                self.upper_bounds[stagger])
+    print("shape - [x, y, z] or [lat, lon]")
+    print(self.coords[stagger][0].shape)
 
     # retrieve buffers to esmf coordinate memory
     gridptrX = self.get_grid_coords_from_esmc(x, stagger)
@@ -67,10 +68,10 @@ def dump_gridinfo_ctypes(self, stagger, dim=2):
         np.dtype(constants._ESMF2PythonType[self.type]).itemsize*size)
     ycoords = np.frombuffer(ybuffer, constants._ESMF2PythonType[self.type])
 
-    print "DIAGNOSTICS:"
-    print "self.type = ", self.type
-    print "constants._ESMF2PythonType", constants._ESMF2PythonType[self.type]
-    print "constants._ESMF2PythonType.itemsize", constants._ESMF2PythonType[self.type].itemsize
+    print("DIAGNOSTICS:")
+    print("self.type = ", self.type)
+    print("constants._ESMF2PythonType", constants._ESMF2PythonType[self.type])
+    print("constants._ESMF2PythonType.itemsize", constants._ESMF2PythonType[self.type].itemsize)
 
 
     # find the size of the local coordinates at this stagger location
@@ -80,12 +81,12 @@ def dump_gridinfo_ctypes(self, stagger, dim=2):
     # these appear to both return bounds information only
     lb, ub = ESMP_GridGetCoordBounds(self, staggerloc=stagger)
 
-    print "Bounds:"
-    print "  ESMPy.Grid:    ", size
-    print "  ESMPy.ctypes1: ", lb, ub
+    print("Bounds:")
+    print("  ESMPy.Grid:    ", size)
+    print("  ESMPy.ctypes1: ", lb, ub)
 
 
-    print "Coordinates:"
+    print("Coordinates:")
     I = ub[x]-lb[x]
     J = ub[y]-lb[y]
     if dim == 3:
@@ -103,7 +104,7 @@ def dump_gridinfo_ctypes(self, stagger, dim=2):
                     (ycoords[ind] > -1e-10 and 1e-10 > ycoords[ind] and ycoords[ind] != 0) or \
                     ycoords[ind] > 90:
 
-                    print "[", i, ", ", j, "] = [", xcoords[ind], ", ", ycoords[ind], "]"
+                    print("[", i, ", ", j, "] = [", xcoords[ind], ", ", ycoords[ind], "]")
 
                 coordcount += 1
     elif dim == 3:
@@ -113,20 +114,20 @@ def dump_gridinfo_ctypes(self, stagger, dim=2):
             np.dtype(constants._ESMF2PythonType[self.type]).itemsize*size)
         zcoords = np.frombuffer(zbuffer, constants._ESMF2PythonType[self.type])
 
-        for i in xrange(I):
-            for j in xrange(J):
-                for k in xrange(K):
+        for i in range(I):
+            for j in range(J):
+                for k in range(K):
                     ind = i*I + j*J + k
                     if  (1e-10 > xcoords[ind] and xcoords[ind] != 0) or \
                         xcoords[ind] > 360 or \
                         -90 > ycoords[ind] or \
                         (ycoords[ind] > -1e-10 and 1e-10 > ycoords[ind] and ycoords[ind] != 0) or \
                         ycoords[ind] > 90:
 
-                        print "[", i, ", ", j, "] = [", xcoords[ind], ", ", ycoords[ind], "]"
+                        print("[", i, ", ", j, "] = [", xcoords[ind], ", ", ycoords[ind], "]")
                     coordcount += 1
 
-    print "Coordcount = ", coordcount
+    print("Coordcount = ", coordcount)
     '''
     # create a numpy array to point to the ESMF allocation
     # reshape the numpy array of coordinates using Fortran ordering in Grid
@@ -148,4 +149,4 @@ def _dump_field_coords_(self):
         np.dtype(constants._ESMF2PythonType[self.type]).itemsize*size)
     esmf_coords = np.frombuffer(buffer, constants._ESMF2PythonType[self.type])
 
-    print esmf_coords
+    print(esmf_coords)

src/addon/esmpy/src/esmpy/fragments/extras.py

@@ -112,11 +112,11 @@ def ESMP_ArraySpecSet(arrayspec, rank, typekind):
     if rc != _ESMP_SUCCESS:
         raise NameError('ESMC_ArraySpecSet() failed with rc = '+str(rc))
     arrayspec.shallowMem = las.value
-    print 'sizeof(arrayspec) = '+str(sizeof(arrayspec))
-    print 'arrayspec = '+str(arrayspec)
-    print 'sizeof(las) = '+str(sizeof(las))
-    print 'las = '+str(las)
-    print "\n"
+    print('sizeof(arrayspec) = '+str(sizeof(arrayspec)))
+    print('arrayspec = '+str(arrayspec))
+    print('sizeof(las) = '+str(sizeof(las)))
+    print('las = '+str(las))
+    print("\n")
 
     return arrayspec
 

src/addon/esmpy/src/esmpy/fragments/remap.py

@@ -101,15 +101,15 @@ def remap(srcgrid, dstgrid, weights, method='bilinear'):
     if os.environ.get('ESMF_NUM_PROCS'):
         NUM_PROCS = os.environ.get('ESMF_NUM_PROCS')
     else:
-        print "ESMF_NUM_PROCS not defined in user environment, using default ESMF_NUM_PROCS=1"
+        print("ESMF_NUM_PROCS not defined in user environment, using default ESMF_NUM_PROCS=1")
         NUM_PROCS = "1"
 
     # read the esmf.mk and get the location of the executable and the OS for 
     # this system
     if os.environ.get('ESMFMKFILE'):
         esmfmkfile = open(os.environ.get('ESMFMKFILE'))
     else:
-        print "ESMFMKFILE is not defined!"
+        print("ESMFMKFILE is not defined!")
         sys.exit
 
     for line in esmfmkfile:
@@ -137,7 +137,7 @@ def remap(srcgrid, dstgrid, weights, method='bilinear'):
         options = '-m conserve'
         file = 'c'
     else:
-        print 'Method: '+method+' is not supported!'
+        print('Method: '+method+' is not supported!')
         sys.exit
 
     # TODO: what is this cruft?