Duplicate Output in Python Tab (OsX 10.8)

Question

Using the snippet below, I added adding tabs to the python interpreter.

import readline import rlcompleter if 'libedit' in readline.__doc__: readline.parse_and_bind("bind ^I rl_complete") else: readline.parse_and_bind("tab: complete") 

However, I came across strange behavior when, after pressing TAB, the interpreter returned duplicates as such:

 Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> d=dict() >>> d. Display all 108 possibilities? (y or n) d.__class__( d.__class__( d.__class__( d.__class__( d.__cmp__( d.__cmp__( d.__contains__( d.__contains__( d.__delattr__( d.__delattr__( d.__delattr__( d.__delitem__( d.__delitem__( d.__doc__ d.__doc__ d.__doc__ d.__eq__( d.__eq__( d.__format__( d.__format__( d.__format__( d.__ge__( d.__ge__( d.__getattribute__( d.__getattribute__( d.__getattribute__( d.__getitem__( d.__getitem__( d.__gt__( d.__gt__( d.__hash__ d.__hash__ d.__hash__ d.__init__( d.__init__( d.__init__( d.__iter__( d.__iter__( d.__le__( d.__le__( d.__len__( d.__len__( d.__lt__( d.__lt__( d.__ne__( d.__ne__( d.__new__( d.__new__( d.__new__( d.__reduce__( d.__reduce__( d.__reduce__( d.__reduce_ex__( d.__reduce_ex__( d.__reduce_ex__( d.__repr__( d.__repr__( d.__repr__( d.__setattr__( d.__setattr__( d.__setattr__( d.__setitem__( d.__setitem__( d.__sizeof__( d.__sizeof__( d.__sizeof__( d.__str__( d.__str__( d.__str__( d.__subclasshook__( d.__subclasshook__( d.__subclasshook__( d.clear( d.clear( d.copy( d.copy( d.fromkeys( d.fromkeys( d.get( d.get( d.has_key( d.has_key( d.items( d.items( d.iteritems( d.iteritems( d.iterkeys( d.iterkeys( d.itervalues( d.itervalues( d.keys( d.keys( d.pop( d.pop( d.popitem( d.popitem( d.setdefault( d.setdefault( d.update( d.update( d.values( d.values( d.viewitems( d.viewitems( d.viewkeys( d.viewkeys( d.viewvalues( d.viewvalues( 

108 possibilities! min 2, maximum 4 duplicates.

Besides,

• if I'm a subclass of dict , the total number of possibilities increases to 160 (and then to 209, 258).
• If I type enough characters for TAB to nail a command, it does this without displaying duplicates.

Any pointers or debugging tips are welcome.

Answer 1

I solved this problem by adding a custom kit. Now it works as expected.

 import readline import rlcompleter c = rlcompleter.Completer() def complete(text, state): buffer = readline.get_line_buffer() first = c.complete(buffer, 0) if state == 0: return first current = c.complete(buffer, state) if current != first: return current readline.parse_and_bind('bind ^I rl_complete') readline.set_completer(complete)