+ srcfile,abspath,code = self.modules[fullname]
+
+ override = os.environ.get('M5_OVERRIDE_PY_SOURCE', 'false').lower()
+ if override in ('true', 'yes') and os.path.exists(abspath):
+ src = open(abspath, 'r').read()
+ code = compile(src, abspath, 'exec')
+