Subprocess wait in deadlock averted

modules/bindings/pymod/clustalw.py

@@ -129,8 +129,8 @@ def ClustalW(seq1, seq2=None, clustalw=None, keep_files=False, nopgap=False,
   if clustalw_option_string!=False:
     command=command+" "+clustalw_option_string  #see useful flags: http://toolkit.tuebingen.mpg.de/clustalw/help_params
 
-  with subprocess.Popen(command, shell=True, stdout=subprocess.PIPE) as ps: 
-    ps.wait()
+  subprocess.run(command, shell=True, stdout=subprocess.DEVNULL) 
+
   aln=io.LoadAlignment(out)