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/pkgutil.py

@@ -21,7 +21,7 @@ def read_code(stream):
     if magic != imp.get_magic():
         return None
 
-    stream.read(4) # Skip timestamp
+    stream.read(8) # Skip timestamp and size
     return marshal.load(stream)