Closes #19248: actually check for Python 3.x in tools/sphinx-build.py.
diff --git a/Doc/tools/sphinx-build.py b/Doc/tools/sphinx-build.py
index 91be6f0..a446dfa 100644
--- a/Doc/tools/sphinx-build.py
+++ b/Doc/tools/sphinx-build.py
@@ -15,7 +15,7 @@
if __name__ == '__main__':
- if sys.version_info[:3] < (2, 4, 0):
+ if sys.version_info[:3] < (2, 4, 0) or sys.version_info[:3] > (3, 0, 0):
sys.stderr.write("""\
Error: Sphinx needs to be executed with Python 2.4 or newer (not 3.0 though).
(If you run this from the Makefile, you can set the PYTHON variable