This commit is contained in:
Will McGugan 2019-12-23 16:21:51 +00:00
parent 26ac25e091
commit 155ee591c7
7 changed files with 84 additions and 7 deletions

1
.gitignore vendored
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.DS_Store
.vscode
mypy_report
# Byte-compiled / optimized / DLL files
__pycache__/

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test:
pytest --cov-report term-missing --cov=rich tests/ -v
typecheck:
mypy -p rich --python-version 3.7 --ignore-missing-imports --warn-unreachable
typecheck-report:
mypy -p rich --python-version 3.7 --ignore-missing-imports --warn-unreachable --html-report mypy_report

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# WIP
# Rich
Rich is a Python library for _rich_ text and advanced formatting to the terminal. Rich provided an easy to use API for colored text (up to 16.7million colors) with bold / italic / underline etc. and a number of more sophisticated formatting options, such as syntax / regex highlighting, emoji, tables, and markdown rendering.
Rich is also a _framework_ in that it implements a simple protocol which you may use to make custom objects renderable with advanced terminal formatting.
## Installing
Rich may be installed with pip or your favorite PyPi package manager.
```
pip install rich
```
## Basic Usage
The first step to using the rich console is to import and construct the `Console` object.
```python
from rich.console import Console
console = Console()
```
Most applications will require one `Console` instance. The easiest way to manage your console instance would be to construct an instance at the module level and import it where needed.
The Console object has a `print` method which has an intentionally similar interface to the builtin `print` function. Here's an example of use:
```
console.print("Hello", "World!")
```
As you might expect, this will print `"Hello World!"` to the terminal. The only difference from the `print` function is that the output is word-wrapped by default (Rich auto-detects the width of the terminal).
There are a few ways of adding color and style to your output. You can set a style for the entire output, by adding a `style` keyword argument. Here's an example:
```
console.print("Hello", "World!", style="bold red")
```
The output will be something like the following:
<code>
<pre style="font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace"><span style="color: #800000; font-weight: bold">Hello World!
</span></pre>
</code>
That's fine for styling a line of text at a time. For more finely grained styling, Rich renders a special markup which is similar in syntax to [bbcode](https://en.wikipedia.org/wiki/BBCode). Here's an example:
```python
console.print("Where there is a [b]Will[/b] there is a [i]way[/i].")
```
<code>
<pre style="font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">
Where there is a <span style="font-weight: bold">Will</span> there is a <span style="font-style: italic">way</span>.
</pre>
</code>
## Emoji
Rich supports a simple way of inserting emoji in to terminal output, by using the name of the emoji between two colons. Here's an example:
```python
console.print(":smiley: :vampire: :pile_of_poo: :thumbs_up: :raccoon:")
```
<code>
<pre style="font-family:Menlo,'DejaVu Sans Mono',consolas,'Courier New',monospace">😃 🧛 💩 👍 🦝
</pre>
</code>
Please use this feature wisely.

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@ -261,7 +261,7 @@ class Color(NamedTuple):
number: Optional[int] = None
triplet: Optional[ColorTriplet] = None
def __str__(self):
def __str__(self) -> str:
"""Render the color to the terminal."""
attrs = self.get_ansi_codes(foreground=True)
return (

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@ -578,8 +578,8 @@ class Console:
render_str = renderable
if emoji:
render_str = _emoji_replace(render_str)
render_str = self.render_str(render_str)
append_text(highlight(render_str) if highlight else render_str)
render_text = self.render_str(render_str)
append_text(highlight(render_text) if highlight else render_text)
elif isinstance(renderable, Text):
append_text(renderable)
elif isinstance(renderable, (int, float, bool, bytes, type(None))):

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@ -59,7 +59,7 @@ class Emoji:
if __name__ == "__main__": # pragma: no cover
from .console import Console
c = Console(markup=None)
c = Console(markup=False)
e = Emoji("thumbs_up")
print(repr(e))

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@ -104,11 +104,11 @@ class Style:
append(self._bgcolor.name)
return " ".join(attributes) or "none"
def __repr__(self):
def __repr__(self) -> str:
"""Render a named style differently from an anonymous style."""
return f'<style "{self}">'
def __eq__(self, other) -> bool:
def __eq__(self, other: Any) -> bool:
if not isinstance(other, Style):
return NotImplemented
return (