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https://github.com/CITGuru/PyInquirer

A Python module for common interactive command line user interfaces
https://github.com/CITGuru/PyInquirer

cli cli-app cmd command-line command-line-app command-line-interface command-line-tool inquirer ipython prompt-toolkit pyinquirer python python2 python3 unix-command

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A Python module for common interactive command line user interfaces

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README 

        
PythonInquirer

==============

.. image:: https://opencollective.com/pyinquirer/backers/badge.svg

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    :target: #backers



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    :alt: Sponsors on Open Collective

    :target: #sponsors



.. image:: https://travis-ci.org/expobrain/PyInquirer.svg?branch=master

    :target: https://travis-ci.org/expobrain/PyInquirer



**Update: We are looking for a successor/maintainance. Here: **

**Github is starting to invite developers in from the GitHub Sponsors waitlist!**



Your recommendations matter, so be sure to nominate `me and other contributors `__ of this project you'd like to see on GitHub Sponsors next by using the form in this link: http://github.co/2IHdeOw



PyInquirer is a collection of common interactive command line user interfaces. 



PyInquirer 1.0.3 Bugfix Update

-----------------



`PyInquirer 1.0.3 `



Table of Contents

-----------------



1. `Documentation <#documentation>`__



   1. `Installation <#installation>`__

   2. `Examples <#examples>`__

   3. `Quickstart <#quickstart>`__

   4. `Question Types <#types>`__

   5. `Question Properties <#properties>`__

   6. `User Interfaces and Styles <#styles>`__



2. `Windows Platform <#windows>`__

3. `Support <#support>`__

4. `Contribution <#contribution>`__

5. `Acknowledgments <#acknowledgements>`__

6. `License <#license>`__



Goal and Philosophy

-------------------



**PyInquirer** strives to be an easily embeddable and beautiful

command line interface for `Python `__.

**PyInquirer** wants to make it easy for existing Inquirer.js users

to write immersive command line applications in Python. We are convinced

that its feature-set is the most complete for building immersive CLI

applications. We also hope that **PyInquirer** proves itself useful

to Python users.



**PyInquirer** should ease the process of - providing *error

feedback* - *asking questions* - *parsing* input - *validating* answers

- managing *hierarchical prompts



**Note:** **PyInquirer** provides the user interface and the inquiry

session flow. >



Documentation

-------------



Installation

~~~~~~~~~~~~



Like most Python packages PyInquirer is available on `PyPi `__.

Simply use pip to install the PyInquirer package



.. code:: shell



    pip install PyInquirer



In case you encounter any prompt\_toolkit error, that means you've the

wrong prompt\_toolkit version.



You can correct that by doing



.. code:: shell



    pip install prompt_toolkit==1.0.14



or download the wheel file from here:



.. code:: shell



    https://pypi.org/project/prompt_toolkit/1.0.14/#files



Quickstart

~~~~~~~~~~



Like Inquirer.js, using inquirer is structured into two simple steps:



-  you define a **list of questions** and hand them to **prompt**

-  prompt returns a **list of answers**



.. code:: python



    from __future__ import print_function, unicode_literals

    from PyInquirer import prompt, print_json



    questions = [

        {

            'type': 'input',

            'name': 'first_name',

            'message': 'What\'s your first name',

        }

    ]



    answers = prompt(questions)

    print_json(answers)  # use the answers as input for your app



A good starting point from here is probably the examples section.



Examples

~~~~~~~~



Most of the examples intend to demonstrate a single question type or

feature:



-  `editor.py <./examples/editor.py>`_

-  `expand.py <./examples/expand.py>`_

-  `list.py <./examples/list.py>`_

-  `password.py <./examples/password.py>`_

-  `when.py <./examples/when.py>`_

-  `checkbox.py <./examples/checkbox.py>`_

-  `confirm.py <./examples/confirm.py>`_

-  `hierarchical.py <./examples/hierarchical.py>`_

-  `pizza.py <./examples/pizza.py>`_ - demonstrate using different question types

-  `input.py  <./examples/input.py>`_

-  `rawlist.py <./examples/rawlist.py>`_



If you want to launch examples with the code from repository instead of

installing a package you need to execute ``pip install -e .`` within project

directory.



Question Types

~~~~~~~~~~~~~~



``questions`` is a list of questions. Each question has a type.



List - ``{type: 'list'}``

^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``, ``choices``\ [, ``default``,

``filter``] properties. (Note that default must be the choice ``index``

in the array or a choice ``value``)



|List prompt| s ---



Raw List - ``{type: 'rawlist'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``, ``choices``\ [, ``default``,

``filter``] properties. (Note that default must the choice ``index`` in

the array)



.. figure:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/raw-list.png

   :alt: Raw list prompt



   Raw list prompt



--------------



Expand - ``{type: 'expand'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``, ``choices``\ [, ``default``]

properties. (Note that default must be the choice ``index`` in the

array. If ``default`` key not provided, then ``help`` will be used as

default choice)



Note that the ``choices`` object will take an extra parameter called

``key`` for the ``expand`` prompt. This parameter must be a single

(lowercased) character. The ``h`` option is added by the prompt and

shouldn't be defined by the user.



See ``examples/expand.py`` for a running example.



|Expand prompt closed| |Expand prompt expanded|



--------------



Checkbox - ``{type: 'checkbox'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``, ``choices``\ [, ``filter``,

``validate``] properties.



Choices marked as ``{'checked': True}`` will be checked by default.



Choices whose property ``disabled`` is truthy will be unselectable. If

``disabled`` is a string, then the string will be outputted next to the

disabled choice, otherwise it'll default to ``"Disabled"``. The

``disabled`` property can also be a synchronous function receiving the

current answers as argument and returning a boolean or a string.



The ``pointer_index`` kwarg can be used to specify initial pointer position.



.. figure:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/checkbox-prompt.png

   :alt: Checkbox prompt



   Checkbox prompt



--------------



Confirm - ``{type: 'confirm'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``\ [, ``default``] properties.

``default`` is expected to be a boolean if used.



.. figure:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/confirm-prompt.png

   :alt: Confirm prompt



   Confirm prompt



--------------



Input - ``{type: 'input'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``\ [, ``default``, ``filter``,

``validate``] properties.



.. figure:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/input-prompt.png

   :alt: Input prompt



   Input prompt



--------------



Password - ``{type: 'password'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``\ [, ``default``, ``filter``,

``validate``] properties.



.. figure:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/password-prompt.png

   :alt: Password prompt



   Password prompt



--------------



Editor - ``{type: 'editor'}``

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^



Take ``type``, ``name``, ``message``\ [, ``default``, ``filter``,

``validate``, ``eargs``] properties



Editor Arguments - ``eargs``

~~~~~~~~~~~~~~~~~~~~~~~~~~~~



Opens an empty or edits the default text in the defined editor.  If an editor is given

(should be the full path to the executable but the regular operating

system search path is used for finding the executable) it overrides

the detected editor.  Optionally, some environment variables can be

used.  If the editor is closed without changes, ``None`` is returned.  In

case a file is edited directly the return value is always ``None`` and

``save`` and ``ext`` are ignored.



Takes:



-  editor: accepts ``default`` to get the default platform editor. But

   you can also provide the path to an editor e.g ``vi``.

-  ext: the extension to tell the editor about. This defaults to `.txt`

   but changing this might change syntax highlighting e.g ".py"

-  save: accepts ``True`` or ``False`` to determine to save a file.

-  filename: accepts the path of a file you'd like to edit.

-  env: accepts any given environment variables to pass to the editor



Launches an instance of the users preferred editor on a temporary file.

Once the user exits their editor, the contents of the temporary file are

read in as the result. The editor to use is determined by reading the

:math:``VISUAL or ``\ EDITOR environment variables. If neither of those

are present, notepad (on Windows) or vim (Linux or Mac) is used.



Question Properties

~~~~~~~~~~~~~~~~~~~



A question is a dictionary containing question related values:



-  ``type``: (String) Type of the prompt. Defaults: input - Possible values:

   input, confirm, list, rawlist, expand, checkbox, password, editor

-  ``name``: (String) The name to use when storing the answer in the answers

   hash. If the name contains periods, it will define a path in the

   answers hash.

-  ``message``: (String\|Function) The question to print. If defined as a

   function, the first parameter will be the current inquirer session

   answers.

-  ``default``: (String\|Number\|Array\|Function) Default value(s) to use if

   nothing is entered, or a function that returns the default value(s).

   If defined as a function, the first parameter will be the current

   inquirer session answers.

-  ``choices``: (Array\|Function) Choices array or a function returning a

   choices array. If defined as a function, the first parameter will be

   the current inquirer session answers. Array values can be simple

   strings, or objects containing a name (to display in list), a value

   (to save in the answers hash) and a short (to display after

   selection) properties. The choices array can also contain a

   Separator.

-  ``validate``: (Function) Receive the user input and should return true if

   the value is valid, and an error message (String) otherwise. If false

   is returned, a default error message is provided.

-  ``filter``: (Function) Receive the user input and return the filtered

   value to be used inside the program. The value returned will be added

   to the Answers hash.

-  ``when``: (Function, Boolean) Receive the current user answers hash and

   should return true or false depending on whether or not this question

   should be asked. The value can also be a simple boolean.

-  ``pageSize``: (Number) Change the number of lines that will be rendered

   when using list, rawList, expand or checkbox.



User Interfaces and Styles

~~~~~~~~~~~~~~~~~~~~~~~~~~



TODO



Windows Platform

----------------



**``PyInquirer``** is build on prompt\_toolkit which is cross platform,

and everything that you build on top should run fine on both Unix and

Windows systems. On Windows, it uses a different event loop

(WaitForMultipleObjects instead of select), and another input and output

system. (Win32 APIs instead of pseudo-terminals and VT100.)



It's worth noting that the implementation is a "best effort of what is

possible". Both Unix and Windows terminals have their limitations. But

in general, the Unix experience will still be a little better.



For Windows, it's recommended to use either cmder or conemu.



Support

-------



Most of the questions are probably related to using a question type or

feature. Please lookup and study the appropriate examples.



Issue on Github TODO link



For many issues like for example common Python programming issues

stackoverflow might be a good place to search for an answer. TODO link



Contribution

------------



.. code:: shell



    $ git clone [email protected]:CITGuru/PyInquirer.git

    $ cd PyInquirer

    $ python -m venv venv

    $ source venv/bin/activate

    $ pip install --upgrade pip

    $ pip install -r requirements.txt

    $ pip install -r requirements_dev.txt



With an environment ready you can add new feature and check everything works

just fine



.. code:: shell



    $ pytest -sv tests/



That's it, now you can fork a project and submit PR with your change!



Credits



+++++++



Contributors

------------



This project exists thanks to all the people who contribute!



.. image:: https://opencollective.com/pyinquirer/contributors.svg?width=890&button=false



Backers

-------



Thank you to all our backers! `Become a backer`__.



.. image:: https://opencollective.com/pyinquirer/backers.svg?width=890

    :target: https://opencollective.com/pyinquirer#backers



__ Backer_

.. _Backer: https://opencollective.com/pyinquirer#backer



Sponsors

--------



Support us by becoming a sponsor. Your logo will show up here with a link to your website. `Become a sponsor`__.



.. image:: https://opencollective.com/pyinquirer/sponsor/0/avatar.svg



    :target: https://opencollective.com/pyinquirer/sponsor/0/website



__ Sponsor_

.. _Sponsor: https://opencollective.com/pyinquirer#sponsor



License

-------



Copyright (c) 2018 Oyetoke Toby (twitter: @oyetokeT)



Licensed under the MIT license.



.. |List prompt| image:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/list-prompt.png

.. |Expand prompt closed| image:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/expand-prompt-1.png

.. |Expand prompt expanded| image:: https://raw.githubusercontent.com/citguru/PyInquirer/master/docs/images/expand-prompt-2.png