|
| 1 | +.. _asking_for_input: |
| 2 | + |
| 3 | +Asking for a choice |
| 4 | +=================== |
| 5 | + |
| 6 | +Similar to how the :func:`~prompt_toolkit.shortcuts.prompt` function allows for |
| 7 | +text input, prompt_toolkit has a |
| 8 | +:func:`~prompt_toolkit.shortcuts.prompt_choice` function to ask for a choice |
| 9 | +from a list of options: |
| 10 | + |
| 11 | +.. code:: python |
| 12 | +
|
| 13 | + from prompt_toolkit.shortcuts import prompt_choice |
| 14 | +
|
| 15 | + result = prompt_choice( |
| 16 | + message="Please choose a dish", |
| 17 | + options=[ |
| 18 | + ("pizza", "Pizza with mushrooms"), |
| 19 | + ("salad", "Salad with tomatoes"), |
| 20 | + ("sushi", "Sushi"), |
| 21 | + ], |
| 22 | + default="salad", |
| 23 | + ) |
| 24 | +
|
| 25 | + print(f"You have chosen: {text}") |
| 26 | +
|
| 27 | +
|
| 28 | +Coloring the options |
| 29 | +-------------------- |
| 30 | + |
| 31 | +Similar to text input prompts, it is possible to customize the colors and |
| 32 | +styles. The ``message`` parameter takes any :ref:`formatted text |
| 33 | +<formatted_text>`, and the labels (2nd argument of the options) can also be |
| 34 | +:ref:`formatted text <formatted_text>`. Further, we can pass a |
| 35 | +:class:`~prompt_toolkit.styles.Style` instance using the |
| 36 | +:meth:`~prompt_toolkit.styles.Style.from_dict` function: |
| 37 | + |
| 38 | +.. code:: python |
| 39 | +
|
| 40 | + from __future__ import annotations |
| 41 | +
|
| 42 | + from prompt_toolkit.formatted_text import HTML |
| 43 | + from prompt_toolkit.shortcuts import prompt_choice |
| 44 | + from prompt_toolkit.styles import Style |
| 45 | +
|
| 46 | + style = Style.from_dict( |
| 47 | + { |
| 48 | + "input-selection": "fg:#ff0000", |
| 49 | + "number": "fg:#884444 bold", |
| 50 | + "selected-option": "underline", |
| 51 | + "frame.border": "#884444", |
| 52 | + } |
| 53 | + ) |
| 54 | +
|
| 55 | + result = prompt_choice( |
| 56 | + message=HTML("<u>Please select a dish</u>:"), |
| 57 | + options=[ |
| 58 | + ("pizza", "Pizza with mushrooms"), |
| 59 | + ( |
| 60 | + "salad", |
| 61 | + HTML("<ansigreen>Salad</ansigreen> with <ansired>tomatoes</ansired>"), |
| 62 | + ), |
| 63 | + ("sushi", "Sushi"), |
| 64 | + ], |
| 65 | + style=style, |
| 66 | + ) |
| 67 | + print(result) |
| 68 | +
|
| 69 | +
|
| 70 | +Adding a frame |
| 71 | +-------------- |
| 72 | + |
| 73 | +The :func:`~prompt_toolkit.shortcuts.prompt_choice` function takes a |
| 74 | +``show_frame`` argument. When set to ``True``, the options will be shown |
| 75 | +inside a frame. It is also possible to pass a :ref:`filter <filters>`, like |
| 76 | +``~is_done``, so that the frame is only displayed when asking for input, but |
| 77 | +hidden once the input is accepted. |
| 78 | + |
| 79 | +.. code:: python |
| 80 | +
|
| 81 | + from prompt_toolkit.shortcuts import prompt_choice |
| 82 | + from prompt_toolkit.filters import is_done |
| 83 | + from prompt_toolkit.styles import Style |
| 84 | +
|
| 85 | + style = Style.from_dict( |
| 86 | + { |
| 87 | + "frame.border": "#884444", |
| 88 | + "selected-option": "bold underline", |
| 89 | + } |
| 90 | + ) |
| 91 | + result = prompt_choice( |
| 92 | + message="Please select a dish:", |
| 93 | + options=[ |
| 94 | + ("pizza", "Pizza with mushrooms"), |
| 95 | + ("salad", "Salad with tomatoes"), |
| 96 | + ("sushi", "Sushi"), |
| 97 | + ], |
| 98 | + style=style, |
| 99 | + show_frame=~is_done, |
| 100 | + ) |
| 101 | + print(result) |
| 102 | +
|
| 103 | +
|
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