Fix get_config_var('Py_DEBUG') usage in sysconfig._get_pybuilddir()

Author: XuehaiPan

Lib/sysconfig/__main__.py

@@ -162,7 +162,7 @@ def _print_config_dict(d, stream):
 
 def _get_pybuilddir():
     pybuilddir = f'build/lib.{get_platform()}-{get_python_version()}'
-    if get_config_var('Py_DEBUG') == '1':
+    if get_config_var('Py_DEBUG'):
         pybuilddir += '-pydebug'
     return pybuilddir