1 #!/usr/bin/env python  2 # python startup file  3 import sys 4 import readline 5 import rlcompleter 6 import atexit 7 import os 8 # tab completion  9 readline.parse_and_bind(‘tab: complete‘)10 # history file 11 histfile = os.path.join(os.environ[‘HOME‘], ‘.pythonhistory‘)12 try:13     readline.read_history_file(histfile)14 except IOError:15     pass16 atexit.register(readline.write_history_file, histfile)17 del os, histfile, readline, rlcompleter