use "with open" instead of "open" and "close"

SirIsaac/fittingProblem.py

@@ -1801,12 +1801,11 @@ def localFitToData_parallel(self,numprocs,fittingData,dataModel,
         save(inputDict,inputDictFilename)
 
         # call mpi
-        stdoutFile = open(prefix+"stdout.txt",'w')
-        subprocess.call([ "mpirun","-np",str(numprocs),"--allow-run-as-root","python",
-                          os.path.join(SIRISAACDIR, "localFitParallel.py"),
-                          inputDictFilename ],
-                        stderr=stdoutFile,stdout=stdoutFile,env=os.environ)
-        stdoutFile.close()
+        with open(prefix+"stdout.txt",'w') as stdoutFile:
+            subprocess.call([ "mpirun","-np",str(numprocs),"python",
+                              os.path.join(SIRISAACDIR, "localFitParallel.py"),
+                              inputDictFilename ],
+                            stderr=stdoutFile,stdout=stdoutFile,env=os.environ)
         os.remove(inputDictFilename)
 
         try:
@@ -2622,12 +2621,11 @@ def generateEnsemble_parallel(self,numprocs,dataModel,initialParameters,
           # for info on "env=os.environ", see
           # https://stackoverflow.com/questions/60060142/strange-interaction-
           #         between-h5py-subprocess-and-mpirun
-          stdoutFile = open(prefix+"stdout.txt",'w')
-          subprocess.call([ "mpirun","-np",str(numprocs),"--allow-run-as-root","python",
-                os.path.join(SIRISAACDIR, "generateEnsembleParallel.py"),
-                inputDictFilename ],
-                stderr=stdoutFile,stdout=stdoutFile,env=os.environ)
-          stdoutFile.close()
+          with open(prefix+"stdout.txt",'w') as stdoutFile:
+              subprocess.call([ "mpirun","-np",str(numprocs),"python",
+                    os.path.join(SIRISAACDIR, "generateEnsembleParallel.py"),
+                    inputDictFilename ],
+                    stderr=stdoutFile,stdout=stdoutFile,env=os.environ)
           os.remove(inputDictFilename)
 
           try: