--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/libpasteurize/fixes/fix_newstyle.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,33 @@
+u"""
+Fixer for "class Foo: ..." -> "class Foo(object): ..."
+"""
+
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import LParen, RParen, Name
+
+from libfuturize.fixer_util import touch_import_top
+
+
+def insert_object(node, idx):
+    node.insert_child(idx, RParen())
+    node.insert_child(idx, Name(u"object"))
+    node.insert_child(idx, LParen())
+
+class FixNewstyle(fixer_base.BaseFix):
+
+    # Match:
+    #   class Blah:
+    # and:
+    #   class Blah():
+
+    PATTERN = u"classdef< 'class' NAME ['(' ')'] colon=':' any >"
+
+    def transform(self, node, results):
+        colon = results[u"colon"]
+        idx = node.children.index(colon)
+        if (node.children[idx-2].value == '(' and
+            node.children[idx-1].value == ')'):
+            del node.children[idx-2:idx]
+            idx -= 2
+        insert_object(node, idx)
+        touch_import_top(u'builtins', 'object', node)