Issue #14099: Backout changeset e5bb3044402b (except adapted tests).

1 files changed, 8 insertions, 2 deletions

diff --git a/Doc/library/zipfile.rst b/Doc/library/zipfile.rst
index 465d786cbd..1d23a7c4d2 100644
--- a/Doc/library/zipfile.rst
+++ b/Doc/library/zipfile.rst
@@ -219,8 +219,14 @@ ZipFile Objects
 
    .. note::
 
-      Objects returned by :meth:`.open` can operate independently of the
-      ZipFile.
+      If the ZipFile was created by passing in a file-like object as the  first
+      argument to the constructor, then the object returned by :meth:`.open` shares the
+      ZipFile's file pointer.  Under these  circumstances, the object returned by
+      :meth:`.open` should not  be used after any additional operations are performed
+      on the  ZipFile object.  If the ZipFile was created by passing in a string (the
+      filename) as the first argument to the constructor, then  :meth:`.open` will
+      create a new file object that will be held by the ZipExtFile, allowing it to
+      operate independently of the  ZipFile.
 
    .. note::