readline - Persistent history in python cmd module -


is there way configure cmd module python keep persistent history after interactive shell has been closed?

when press , down keys access commands entered shell on previous occasions ran python script ones have entered during session.

if cmd uses set_completer imported readline module

readline automatically keeps history of enter. need add hooks load , store history.

use readline.read_history_file(filename) read history file. use readline.write_history_file() tell readline persist history far. may want use readline.set_history_length() keep file growing without bound:

import os.path try:     import readline except importerror:     readline = none  histfile = os.path.expanduser('~/.someconsole_history') histfile_size = 1000  class someconsole(cmd.cmd):     def preloop(self):         if readline , os.path.exists(histfile):             readline.read_history_file(histfile)      def postloop(self):         if readline:             readline.set_history_length(histfile_size)             readline.write_history_file(histfile)

i used cmd.preloop() , cmd.postloop() hooks trigger loading , saving points command loop starts , ends.

if don't have readline installed, simulate still adding precmd() method , record entered commands yourself.


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