example.qmd

---
title: "Black-formatter Example"
format: 
  html:
    code-tools: true
jupyter: python3
filters:
  - black-formatter
embed-resources: true
---

> Note: View the source of this document along with unformatted python codes by clicking `</> Code` on top-right corner to compare.

## Example 1

```{python}
#| label: hello_world
print (    'hello, world' )
```

## Example 2

```{python}
#| label: is_unique
def is_unique(
               s
               ):
    s = list(s
                )
    s.sort()
 
 
    for i in range(len(s) - 1):
        if s[i] == s[i + 1]:
            return 0
    else:
        return 1
```


[black defaults to 88 character per line](https://black.readthedocs.io/en/stable/the_black_code_style/current_style.html#line-length). But you can change this default behavior
by specifying `line-length` in the `pyproject.toml` file.

```{.toml filename='pyproject.toml'}
[tool.black]
line-length = 40
```


## Example 3

This extension works on non executable code blocks (i.e. `{.python}`) too.


```{.python}
def example_function(arg_1: str, arg_2: bool, arg_3: int = 0, arg_4: int = 1, arg_5: float = 0.0):
    pass
```


## Example 4

```{.python #test_function}
def function(name, default=None, *args, variable="1123", a, b, c, employee, office, d, e, f, **kwargs):
    """This is function is created to demonstrate black"""
    pass
```