Yet another Python 2 compatibility fix

Author: joewa

OMPython/__init__.py

@@ -1324,7 +1324,10 @@ def simulate(self,resultfile=None,simflags=None,overrideaux=None):  # 11
                 # os.system(cmd)  # Original code
                 # p = subprocess.Popen([cmd], stdout=subprocess.PIPE)
                 # print(str(cmd))
-                p = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+                try:  # Python 3
+                    p = subprocess.run(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+                except:  # Python 2
+                    p = subprocess.call(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
                 # p = subprocess.run([getExeFile, r], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
                 out = p.stdout # .read()
             self.simulationFlag = True