Close #19734: ignore pip env vars in ensurepip

1 files changed, 6 insertions, 0 deletions

diff --git a/Doc/library/ensurepip.rst b/Doc/library/ensurepip.rst
index 528370cf8a..0d821351d7 100644
--- a/Doc/library/ensurepip.rst
+++ b/Doc/library/ensurepip.rst
@@ -119,6 +119,12 @@ Module API
 
    .. note::
 
+      The bootstrapping process has side effects on both ``sys.path`` and
+      ``os.environ``. Invoking the command line interface in a subprocess
+      instead allows these side effects to be avoided.
+
+   .. note::
+
       The bootstrapping process may install additional modules required by
       ``pip``, but other software should not assume those dependencies will
       always be present by default (as the dependencies may be removed in a