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-rw-r--r--Doc/library/linecache.rst11
1 files changed, 7 insertions, 4 deletions
diff --git a/Doc/library/linecache.rst b/Doc/library/linecache.rst
index 34fcac5..9278fc0 100644
--- a/Doc/library/linecache.rst
+++ b/Doc/library/linecache.rst
@@ -30,10 +30,13 @@ The :mod:`linecache` module defines the following functions:
.. index:: triple: module; search; path
- If a file named *filename* is not found, the function will look for it in the
- module search path, ``sys.path``, after first checking for a :pep:`302`
- ``__loader__`` in *module_globals*, in case the module was imported from a
- zipfile or other non-filesystem import source.
+ If a file named *filename* is not found, the function first checks
+ for a :pep:`302` ``__loader__`` in *module_globals*.
+ If there is such a loader and it defines a ``get_source`` method,
+ then that determines the source lines
+ (if ``get_source()`` returns ``None``, then ``''`` is returned).
+ Finally, if *filename* is a relative filename,
+ it is looked up relative to the entries in the module search path, ``sys.path``.
.. function:: clearcache()