private static void replaceExec(@NotNull final PsiElement expression) {
    final PyElementGenerator elementGenerator = PyElementGenerator.getInstance(expression.getProject());
    final String expressionText = expression.getText();
    final StringBuilder stringBuilder = new StringBuilder(expressionText + " (");

    final PsiElement next = getNextElement(expression);
    if (next == null) {
      stringBuilder.append(")");
      expression.replace(elementGenerator.createFromText(LanguageLevel.forElement(expression), PyElement.class,
                                                         stringBuilder.toString()));
      return;
    }
    final String commentText = getComment(next);
    if (next instanceof PyExpressionStatement) {
      final PyExpression expr = ((PyExpressionStatement)next).getExpression();
      if (expr instanceof PyBinaryExpression) {
        final PsiElement operator = ((PyBinaryExpression)expr).getPsiOperator();
        if (operator instanceof LeafPsiElement && ((LeafPsiElement)operator).getElementType() == PyTokenTypes.IN_KEYWORD) {
          addInArguments(stringBuilder, (PyBinaryExpression)expr);
        }
        else {
          stringBuilder.append(next.getText());
        }
      }
      else if (expr instanceof PyTupleExpression) {
        final PyExpression[] elements = ((PyTupleExpression)expr).getElements();
        if (elements.length > 1) {
          if (elements[0] instanceof PyBinaryExpression) {
            addInArguments(stringBuilder, (PyBinaryExpression)elements[0]);
          }
          stringBuilder.append(", ");
          stringBuilder.append(elements[1].getText());
        }
      }
      else {
        stringBuilder.append(((PyExpressionStatement)next).getExpression().getText());
      }
    }
    else {
      stringBuilder.append(next.getText());
    }
    next.delete();
    stringBuilder.append(")");
    if (commentText != null) {
      stringBuilder.append(commentText);
    }
    expression.replace(elementGenerator.createFromText(LanguageLevel.forElement(expression), PyStatement.class,
                                                       stringBuilder.toString()));
  }
private static void replaceExec(@NotNull final PsiElement expression)