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  plotly:
    description: How to use group by in Python with Plotly.
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    name: Group By
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    permalink: python/group-by/
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---

#### Basic Example

```python
import plotly.io as pio

subject = ['Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly']
score = [1,6,2,8,2,9,4,5,1,5,2,8]

data = [dict(
  type = 'scatter',
  x = subject,
  y = score,
  mode = 'markers',
  transforms = [dict(
    type = 'groupby',
    groups = subject,
    styles = [
        dict(target = 'Moe', value = dict(marker = dict(color = 'blue'))),
        dict(target = 'Larry', value = dict(marker = dict(color = 'red'))),
        dict(target = 'Curly', value = dict(marker = dict(color = 'black')))
    ]
  )]
)]

fig_dict = dict(data=data)
pio.show(fig_dict, validate=False)
```

#### Reference
See https://plotly.com/python/reference/ for more information and chart attribute options!