Python startup file

.pythonstartup

# python startup file                                                           
import readline                                                                 
import rlcompleter                                                              
import atexit                                                                   
import os                                                                       
# tab completion                                                                
readline.parse_and_bind('tab: complete')                                        
# history file                                                                  
histfile = os.path.join(os.environ['HOME'], '.pythonhistory')                   
try:                                                                            
    readline.read_history_file(histfile)                                        
except IOError:                                                                 
    pass                                                                        
atexit.register(readline.write_history_file, histfile)                          
del os, histfile, readline, rlcompleter, atexit

don't forge to del atexit too 😄