Personal .pythonrc

.pythonrc

#################################################################
# Add the following to your bashrc to enable loading this script
#   alias py='python -i $HOME/.pythonrc'
#################################################################
import os, sys
from pprint import pprint
home=os.path.expanduser('~')
history_file=home+'/.python_history'
if not os.path.exists(history_file): open(history_file, 'w').close()
cwd = os.getcwd()
if cwd not in sys.path: sys.path.append(cwd)
del os
del sys

# this add completion to python interpreter
import readline
import rlcompleter
readline.parse_and_bind("set show-all-if-ambiguous on")
readline.parse_and_bind("tab: complete")
readline.read_history_file(history_file)
readline.set_history_length(-1)

# this cleans the history of the interpreter and save it to file
def clean_history(histfile):
    L=readline.get_current_history_length()
    history=[]
    for i in range(1,L+1): history.append(readline.get_history_item(i))
    history.reverse()
    clean_history=[]
    for i in range(len(history)):
        command=history[i]
        if command not in clean_history:
            clean_history.append(command)
        else:
            readline.remove_history_item(len(history)-(i+1))
    readline.write_history_file(histfile)

# here we register the "clean_history" function
import atexit
atexit.register(clean_history,history_file)

Adds tab completion and command history to Python interpreter