`!rlcompleter` --- Completion function for GNU readline
rlcompleter
Source code: Lib/rlcompleter.py
The !rlcompleter module defines a completion function suitable to be passed to ~readline.set_completer in the readline module.
When this module is imported on a Unix platform with the readline module available, an instance of the Completer class is automatically created and its ~Completer.complete method is set as the readline completer <readline-completion>. The method provides completion of valid Python identifiers and keywords <identifiers>.
Example:
>>> import rlcompleter
>>> import readline
>>> readline.parse_and_bind("tab: complete")
>>> readline. <TAB PRESSED>
readline.__doc__ readline.get_line_buffer( readline.read_init_file(
readline.__file__ readline.insert_text( readline.set_completer(
readline.__name__ readline.parse_and_bind(
>>> readline.
The !rlcompleter module is designed for use with Python's interactive mode <tut-interactive>. Unless Python is run with the -S option, the module is automatically imported and configured (see rlcompleter-config).
On platforms without readline, the Completer class defined by this module can still be used for custom purposes.
Completer objects have the following method:
Completer.complete(text, state)
Return the next possible completion for text.
When called by the readline module, this method is called successively with state == 0, 1, 2, ... until the method returns None.
If called for text that doesn't include a period character ('.'), it will complete from names currently defined in __main__, builtins and keywords (as defined by the keyword module).
If called for a dotted name, it will try to evaluate anything without obvious side-effects (functions will not be evaluated, but it can generate calls to ~object.__getattr__) up to the last part, and find matches for the rest via the dir function. Any exception raised during the evaluation of the expression is caught, silenced and None is returned.
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