The dataframe iâ€™m using to create the tree graph has both parent and children cells empty sometimes. After modifing them to â€˜noneâ€™, the tree graph works, but it displays all the â€˜noneâ€™ parents and childrens, wich make the graph a bit confusing and less pretty. The only solution i could think was to modify the dataframe, bringing the children cells back, placing them on the empty cells. But i would like to know if there is, i dont know, a buil-in way for plotly to ignore the empty cells on tree graphs somehow ?

```
def grafico_arvore(dataframe):
import plotly.express as px
import numpy as np
import pandas as pd
df = dataframe
df=df.fillna('none')
#df["world"] = "world" # in order to have a single root node
fig = px.treemap(df, path=['categoria1', 'categoria2'], values='gastos',
color='teto', hover_data=['categoria2'],
color_continuous_scale='RdBu',
color_continuous_midpoint=np.average(df['teto'], weights=df['gastos']))
fig.show()
```

Part of the dataframe alredy modified to replace the empty cells with â€˜noneâ€™: