Auto merge of #25239 - marmeladema:issue-23607/test-tidy-no-wpt, r=jdm

Make `mach test-tidy --no-wpt` compatible with Python3

Make `mach test-tidy --no-wpt` compatible with Python3
See also #23607

After this pull request, all python files (except WPT) will be checked for Python3 syntax compatibility.

---
<!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `___` with appropriate data: -->
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors

<!-- Either: -->
- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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<!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. -->

components/script/dom/bindings/codegen/CodegenRust.py

@@ -3943,8 +3943,8 @@ class CGMemberJITInfo(CGThing):
                 depth=self.descriptor.interface.inheritanceDepth(),
                 opType=opType,
                 aliasSet=aliasSet,
-                returnType=reduce(CGMemberJITInfo.getSingleReturnType, returnTypes,
-                                  ""),
+                returnType=functools.reduce(CGMemberJITInfo.getSingleReturnType, returnTypes,
+                                            ""),
                 isInfallible=toStringBool(infallible),
                 isMovable=toStringBool(movable),
                 # FIXME(nox): https://github.com/servo/servo/issues/10991
@@ -4131,8 +4131,8 @@ class CGMemberJITInfo(CGThing):
             if u.hasNullableType:
                 # Might be null or not
                 return "JSVAL_TYPE_UNKNOWN"
-            return reduce(CGMemberJITInfo.getSingleReturnType,
-                          u.flatMemberTypes, "")
+            return functools.reduce(CGMemberJITInfo.getSingleReturnType,
+                                    u.flatMemberTypes, "")
         if t.isDictionary():
             return "JSVAL_TYPE_OBJECT"
         if t.isDate():
@@ -4202,8 +4202,8 @@ class CGMemberJITInfo(CGThing):
         if t.isUnion():
             u = t.unroll()
             type = "JSJitInfo::Null as i32" if u.hasNullableType else ""
-            return reduce(CGMemberJITInfo.getSingleArgType,
-                          u.flatMemberTypes, type)
+            return functools.reduce(CGMemberJITInfo.getSingleArgType,
+                                    u.flatMemberTypes, type)
         if t.isDictionary():
             return "JSJitInfo_ArgType::Object as i32"
         if t.isDate():
@@ -5858,7 +5858,7 @@ class CGInterfaceTrait(CGThing):
         def contains_unsafe_arg(arguments):
             if not arguments or len(arguments) == 0:
                 return False
-            return reduce((lambda x, y: x or y[1] == '*mut JSContext'), arguments, False)
+            return functools.reduce((lambda x, y: x or y[1] == '*mut JSContext'), arguments, False)
 
         methods = []
         for name, arguments, rettype in members():

components/script/dom/bindings/codegen/Configuration.py

@@ -2,6 +2,7 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
+import functools
 import os
 
 from WebIDL import IDLExternalInterface, IDLSequenceType, IDLWrapperType, WebIDLError
@@ -15,7 +16,7 @@ class Configuration:
     def __init__(self, filename, parseData):
         # Read the configuration file.
         glbl = {}
-        execfile(filename, glbl)
+        exec(compile(open(filename).read(), filename, 'exec'), glbl)
         config = glbl['DOMInterfaces']
 
         # Build descriptors for all the interfaces we have in the parse data.
@@ -62,7 +63,8 @@ class Configuration:
                           c.isCallback() and not c.isInterface()]
 
         # Keep the descriptor list sorted for determinism.
-        self.descriptors.sort(lambda x, y: cmp(x.name, y.name))
+        cmp = lambda x, y: (x > y) - (x < y)
+        self.descriptors.sort(key=functools.cmp_to_key(lambda x, y: cmp(x.name, y.name)))
 
     def getInterface(self, ifname):
         return self.interfaces[ifname]