Auto merge of #24435 - marmeladema:issue-23607/compat, r=jdm

Issue 23607: first pass of changes for compatibility with Python3

As much as i want to migrate entirely to Python3 (see #23607), it will require some time as changes in web-platform-tests are significant and rely on upstream fixes to be merged and synced downstream.
In the meantime, lets improve compatibility with Python3 so that later, migration will be less painful.

Build system is definitely not ready yet for Python3, but its a step in the right direction.

---
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- [x ] `./mach build -d` does not report any errors
- [ x] `./mach test-tidy` does not report any errors

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1 files changed, 3 insertions, 1 deletions

diff --git a/python/servo/lints/wpt_lint.py b/python/servo/lints/wpt_lint.py
index a1c7e528c77..e2e44c729ae 100644
--- a/python/servo/lints/wpt_lint.py
+++ b/python/servo/lints/wpt_lint.py
@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import print_function
+
 import os
 import sys
 
@@ -20,7 +22,7 @@ class Lint(LintRunner):
     def _get_wpt_files(self, suite):
         working_dir = os.path.join(WPT_PATH, suite, '')
         file_iter = self.get_files(working_dir, exclude_dirs=[])
-        print '\nRunning the WPT lint on %s...' % working_dir
+        print('\nRunning the WPT lint on %s...' % working_dir)
         for f in file_iter:
             if filter_file(f):
                 yield f[len(working_dir):]