By default, Python still uses timestamp-based invalidation and does not generate hash-based .pyc files at runtime. Hash-based .pyc files may be generated with py_compile or compileall. Hash-based .pyc files come in two variants: checked and unchecked. Python validates checked hash-based ....
New function: in the shutil module, make_archive() takes a filename, archive type (zip or tar-format), and a directory path, and creates an archive containing the directory’s contents. (Added by Tarek Ziadé.) shutil’s copyfile() and copytree() functions now raise a SpecialFileError...