Most integration tests (except 2) pass if we don't always make the use of an ExprStmt.

jedi/parser/pgen2/parse.py

@@ -190,7 +190,7 @@ class PgenParser(object):
         # If there's exactly one child, return that child instead of creating a
         # new node.  We still create expr_stmt and file_input though, because a
         # lot of Jedi depends on its logic.
-        if len(children) != 1 or type in (self.grammar.symbol2number['expr_stmt'],
+        if len(children) != 1 or type in (-1,
                                           self.grammar.symbol2number['file_input']):
             newnode = self.convert_node(self.grammar, type, children)
         else: