Hi William,
I believe this is what you are looking for, style_cell = {‘whitespace’:‘pre-line’}. I found it in the link here
dash_table.DataTable(
columns=[{"name": i, "id": i, "editable":True} for i in df.columns],
data=df.to_dict('records'),
style_cell={
'whiteSpace': 'pre-line'
}
)