From 5136ac0ca21a05691978df8d0650f902c8ca3463 Mon Sep 17 00:00:00 2001 From: Antoine Pitrou Date: Fri, 13 Jan 2012 18:52:16 +0100 Subject: Issue #13645: pyc files now contain the size of the corresponding source code, to avoid timestamp collisions (especially on filesystems with a low timestamp resolution) when checking for freshness of the bytecode. --- Lib/importlib/abc.py | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'Lib/importlib/abc.py') diff --git a/Lib/importlib/abc.py b/Lib/importlib/abc.py index df8cd93634..0d376298c2 100644 --- a/Lib/importlib/abc.py +++ b/Lib/importlib/abc.py @@ -123,7 +123,20 @@ class SourceLoader(_bootstrap.SourceLoader, ResourceLoader, ExecutionLoader): def path_mtime(self, path): """Return the (int) modification time for the path (str).""" - raise NotImplementedError + if self.path_stats.__func__ is SourceLoader.path_stats: + raise NotImplementedError + return int(self.path_stats(path)['mtime']) + + def path_stats(self, path): + """Return a metadata dict for the source pointed to by the path (str). + Possible keys: + - 'mtime' (mandatory) is the numeric timestamp of last source + code modification; + - 'size' (optional) is the size in bytes of the source code. + """ + if self.path_mtime.__func__ is SourceLoader.path_mtime: + raise NotImplementedError + return {'mtime': self.path_mtime(path)} def set_data(self, path, data): """Write the bytes to the path (if possible). -- cgit v1.2.1