Merge pull request #153 from Byvire/close-Popen-without-incompatibility

Wait for subprocess to prevent ResourceWarning
pygraphviz · Aug 4, 2018 · c596e7c · c596e7c
2 parents b21f768 + 14580d8
commit c596e7c
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/pygraphviz/agraph.py b/pygraphviz/agraph.py
@@ -1359,6 +1359,7 @@ def _run_prog(self, prog='nop', args=''):
 
         for t in threads:
             t.join()
+        p.wait()
 
         if not data:
             raise IOError(b"".join(errors).decode(self.encoding))