servo: Merge #6234 - Clarify Python version checking conditional (from frewsxcv:patch-2); r=metajack

Source-Repo: https://github.com/servo/servo
Source-Revision: ce3debbc82e14523657974d1f6110e22272a178e

servo/python/mach_bootstrap.py

@@ -78,7 +78,7 @@ def bootstrap(topdir):
     # Ensure we are running Python 2.7+. We put this check here so we generate a
     # user-friendly error message rather than a cryptic stack trace on module
     # import.
-    if sys.version_info[0] != 2 or sys.version_info[1] < 7:
+    if not (3, 0) > sys.version_info >= (2, 7):
         print('Python 2.7 or above (but not Python 3) is required to run mach.')
         print('You are running Python', platform.python_version())
         sys.exit(1)