use run instead of Popen

Author: ctroupin

pydiva2d.py

@@ -1025,15 +1025,15 @@ def make(self, divadir, datafile=None, paramfile=None, contourfile=None, outputf
                     logger.error("File {0} doesn't exist".format(contourfile))
                     logger.error("Execution stopped")
                     return
-        """
+
         # Check for mesh
         if os.path.exists(divafiles.mesh) and os.path.exists(divafiles.meshtopo):
             logger.info("Mesh already exists")
         else:
             Diva2DMesh().make(divadir,
                               contourfile=divafiles.contour,
                               paramfile=divafiles.parameter)
-        """
+        
 
         calcprocess = subprocess.run("./divacalc", cwd=divadirs.diva2d,
                                        stdout=subprocess.PIPE, shell=True)