cat tab；#。/usr/bin/python。import sys。import readline。import rlcompleter。import atexit。import os；readline.parse_and_bind(&#39；tab：complete&#39；)。histfile = os.path.join(os.environ[&#39；HOME&#39；]，&#39；.pythonhistory&#39；)。try。readline.read_history_file(histfile)。except IOError。pass；atexit.register(readline.write_history_file，histfile)。