Issue #23746: Clarified is_python_build() documentation.

diff --git a/Doc/library/sysconfig.rst b/Doc/library/sysconfig.rst
index c51567a81a41c1c76e942db9654853a6d79e66d5..6ba094d66725b7f177a31604c18931fe5ec97390 100644 (file)
--- a/Doc/library/sysconfig.rst
+++ b/Doc/library/sysconfig.rst
@@ -204,7 +204,9 @@ Other functions
 
 .. function:: is_python_build()
 
-   Return ``True`` if the current Python installation was built from source.
+   Return ``True`` if the running Python interpreter was built from source and
+   is being run from its built location, and not from a location resulting from
+   e.g. running ``make install`` or installing via a binary installer.
 
 
 .. function:: parse_config_h(fp[, vars])