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``argcomplete.autocomplete()`` directly (it's a convenience instance of this class). It has the same signature as
:meth:`CompletionFinder.__call__()`.
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:param argument_parser: The argument parser to autocomplete on
:type argument_parser: :class:`argparse.ArgumentParser`
:param always_complete_options:
Controls the autocompletion of option strings if an option string opening character (normally ``-``) has not
been entered. If ``True`` (default), both short (``-x``) and long (``--x``) option strings will be
suggested. If ``False``, no option strings will be suggested. If ``long``, long options and short options
with no long variant will be suggested. If ``short``, short options and long options with no short variant
will be suggested.
:type always_complete_options: boolean or string
:param exit_method:
Method used to stop the program after printing completions. Defaults to :meth:`os._exit`. If you want to
perform a normal exit that calls exit handlers, use :meth:`sys.exit`.
:type exit_method: callable
:param exclude: List of strings representing options to be omitted from autocompletion
:type exclude: iterable
:param validator:
Function to filter all completions through before returning (called with two string arguments, completion
and prefix; return value is evaluated as a boolean)
:type validator: callable
:param print_suppressed:
Whether or not to autocomplete options that have the ``help=argparse.SUPPRESS`` keyword argument set.
:type print_suppressed: boolean
:param append_space:
Whether to append a space to unique matches. The default is ``True``.
:type append_space: boolean
.. note::
If you are not subclassing CompletionFinder to override its behaviors,
use ``argcomplete.autocomplete()`` directly. It has the same signature as this method.
Produces tab completions for ``argument_parser``. See module docs for more info.
Argcomplete only executes actions if their class is known not to have side effects. Custom action classes can be
added to argcomplete.safe_actions, if their values are wanted in the ``parsed_args`` completer argument, or
their execution is otherwise desirable.
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We save all active ArgumentParsers to extract all their possible option names later.
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Visits the active parsers and their actions, executes their completers or introspects them to collect their
option strings. Returns the resulting completions as a list of strings.
This method is exposed for overriding in subclasses; there is no need to use it directly.
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z$CompletionFinder.collect_completionsc C sz | j d }| jd }|�� }|s$dS ||kr4|d S d}tt|��D ]}|| |krD qZqD|d t|�k rv||d S dS )z>
Get the next positional action if it exists.
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z%CompletionFinder._get_next_positionalc s< dd� |D �}| j du r t� | _ t| j �� � fdd�|D �S )a
Ensures collected completions are Unicode text, de-duplicates them, and excludes those specified by ``exclude``.
Returns the filtered completions as an iterable.
This method is exposed for overriding in subclasses; there is no need to use it directly.
c S s g | ] }t |��qS r )r r� r r r r r z7CompletionFinder.filter_completions.<locals>.<listcomp>Nc s" g | ]}|� vr� � |�s|�qS r )�addr� ��seenr r r $ r )rY �set)r` r� r r� r r� s
z#CompletionFinder.filter_completionsc s� d}|dkr,�r"�fdd�|D �}|d7 }n|dkr<|d7 }t j�d�d v rRd}n|d
krld}d d� |D �}|D ]� � fd d�|D �}qp| jr�d
}t|�dkr�|d d |vr�|dkr�|d d7 < |S )a�
If the word under the cursor started with a quote (as indicated by a nonempty ``cword_prequote``), escapes
occurrences of that quote character in the completions, and adds the quote to the beginning of each completion.
Otherwise, escapes all characters that bash splits words on (``COMP_WORDBREAKS``), and removes portions of
completions before the first colon if (``COMP_WORDBREAKS``) contains a colon.
If there is only one completion, and it doesn't end with a **continuation character** (``/``, ``:``, or ``=``),
adds a space after the completion.
This method is exposed for overriding in subclasses; there is no need to use it directly.
�\r6 c s g | ]}|� d d� �qS )r Nr r� )r= r r r : r z6CompletionFinder.quote_completions.<locals>.<listcomp>z();<>|&!`$*
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z"CompletionFinder.quote_completionsc sr |dkrRt ��\}� }}}|�dtjd � | �|� ||�}� �fdd�|D �| _|t| j�k rj| j| S dS dS )a�
Alternate entry point for using the argcomplete completer in a readline-based REPL. See also
`rlcompleter <https://docs.python.org/2/library/rlcompleter.html#completer-objects>`_.
Usage:
.. code-block:: python
import argcomplete, argparse, readline
parser = argparse.ArgumentParser()
...
completer = argcomplete.CompletionFinder(parser)
readline.set_completer_delims("")
readline.set_completer(completer.rl_complete)
readline.parse_and_bind("tab: complete")
result = input("prompt> ")
(Use ``raw_input`` instead of ``input`` on Python 2, or use `eight <https://github.com/kislyuk/eight>`_).
r c s g | ]}�|t � �d � �qS rP )r7 )r �match�r� �textr r r m r z0CompletionFinder.rl_complete.<locals>.<listcomp>N)rO �insertr( �argvrx Z _rl_matchesr7 )r` r� r: r r� r� Zfirst_colon_pos�matchesr r� r � rl_completeV s
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This function returns a mapping of option names to their help strings for displaying to the user
Usage:
.. code-block:: python
def display_completions(substitution, matches, longest_match_length):
_display_completions = argcomplete.autocomplete.get_display_completions()
print("")
if _display_completions:
help_len = [len(x) for x in _display_completions.values() if x]
if help_len:
maxlen = max([len(x) for x in _display_completions])
print("\n".join("{0:{2}} -- {1}".format(k, v, maxlen)
for k, v in sorted(_display_completions.items())))
else:
print(" ".join(k for k in sorted(_display_completions)))
else:
print(" ".join(x for x in sorted(matches)))
import readline
print("cli /> {0}".format(readline.get_line_buffer()), end="")
readline.redisplay()
...
readline.set_completion_display_matches_hook(display_completions)
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Prints **args** to standard error when running completions. This will interrupt the user's command line interaction;
use it to indicate an error condition that is preventing your completer from working.
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