Support simplified slice AST in Python 3.9

dflook · dflook · commit ca888431d31a · 2020-10-15T09:12:06.000+01:00
diff --git a/src/python_minifier/expression_printer.py b/src/python_minifier/expression_printer.py
@@ -481,6 +481,10 @@ def visit_Subscript(self, node):
             self.visit_ExtSlice(node.slice)
         elif isinstance(node.slice, ast.Ellipsis):
             self.visit_Ellipsis(node)
+        elif sys.version_info >= (3, 9) and isinstance(node.slice, ast.Tuple):
+            self.visit_Tuple(node.slice)
+        elif sys.version_info >= (3, 9):
+            self._expression(node.slice)
         else:
             raise AssertionError('Unknown slice type %r' % node.slice)
 
@@ -788,4 +792,4 @@ def visit_Await(self, node):
         assert isinstance(node, ast.Await)
         self.token_break()
         self.code += 'await'
-        self._rhs(node.value, node)
+        self._rhs(node.value, node)
