.pythonrc

#!/usr/bin/env python
'''
Save this file and add the following line to your ~/.bashrc"
export PYTHONSTARTUP="$HOME/.pythonrc"
'''

def run_from_ipython():                                                         
    try:                                                                        
        __IPYTHON__                                                             
        return True                                                             
    except NameError:                                                           
        return False                                                            
                                                                                
if not run_from_ipython():                                                      
    try:                                                                        
        import readline                                                         
    except ImportError:                                                         
        print "Module readline not available"                                   
    else:                                                                       
        import atexit                                                           
        import os                                                               
        import rlcompleter                                                      
        histfile = os.path.join(os.path.expanduser("~"), ".pythonhist")         
        try:                                                                    
            readline.read_history_file(histfile)                                
        except IOError:                                                         
            pass                                                                
        readline.parse_and_bind("set show-all-if-ambiguous on")                 
        readline.parse_and_bind("tab: complete")                                
        atexit.register(readline.write_history_file, histfile)                  
        del histfile, os, readline, rlcompleter                                 
else:                                                                           
    del run_from_ipython