To enable 'tab-completion' on the command line of the default Python shell, put this in ~/.pythonrc, and setup the PYTHONSTARTUP environment variable to point to it: export PYTHONSTARTUP=~/.pythonrc
# ~/.pythonrc # enable syntax completion try: import readline except ImportError: print "Module readline not available." else: import rlcompleter readline.parse_and_bind("tab: complete")
It needs the GNU readline library and so probably doesn't work on Windows. On Mac OS X there are some issues with readline too, see →Readline on Mac OS X.
For even fancier stuff, use the following startup file: .pystartup in your home-dir
# Add auto-completion and a stored history file of commands to your Python # interactive interpreter. Requires Python 2.0+, readline. Autocomplete is # bound to the Esc key by default (you can change it - see readline docs). # # Store the file in ~/.pystartup, and set an environment variable to point # to it, e.g. "export PYTHONSTARTUP=/max/home/itamar/.pystartup" in bash. # # Note that PYTHONSTARTUP does *not* expand "~", so you have to put in the # full path to your home directory. import atexit import os import readline import rlcompleter historyPath = os.path.expanduser("~/.pyhistory") historyTmp = os.path.expanduser("~/.pyhisttmp.py") endMarkerStr= "# # # histDUMP # # #" saveMacro= "import readline; readline.write_history_file('"+historyTmp+"'); \ print '####>>>>>>>>>>'; print ''.join(filter(lambda lineP: \ not lineP.strip().endswith('"+endMarkerStr+"'), \ open('"+historyTmp+"').readlines())[:])+'####<<<<<<<<<<'"+endMarkerStr readline.parse_and_bind('tab: complete') readline.parse_and_bind('\C-w: "'+saveMacro+'"') def save_history(historyPath=historyPath, endMarkerStr=endMarkerStr): import readline readline.write_history_file(historyPath) # Now filter out those line containing the saveMacro lines= filter(lambda lineP, endMarkerStr=endMarkerStr: not lineP.strip().endswith(endMarkerStr), open(historyPath).readlines()) open(historyPath, 'w+').write(''.join(lines)) if os.path.exists(historyPath): readline.read_history_file(historyPath) atexit.register(save_history) del os, atexit, readline, rlcompleter, save_history, historyPath del historyTmp, endMarkerStr, saveMacro
Additionaly you need to ~# export PYTHONSTARTUP=/root/.pystartup. Then you will have:
- Pressing tab completes the input like common unix-shells.
- Pressing CTRL-w gives You an python code to print the history-file (or parts of it -- there's a [:] in the command that You can replace by [-50:]; which will give you the last 50 lines)