Closes #10142: Support for SEEK_HOLE/SEEK_DATA
diff --git a/Lib/os.py b/Lib/os.py
index 11e4d60..261a39e 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -121,6 +121,7 @@
 
 # Python uses fixed values for the SEEK_ constants; they are mapped
 # to native constants if necessary in posixmodule.c
+# Other possible SEEK values are directly imported from posixmodule.c
 SEEK_SET = 0
 SEEK_CUR = 1
 SEEK_END = 2