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Updating data to dash table

I am trying to get data from a csv and display it using dash table. I want to interact with one column and then changing another column accordingly (Subtracting value of ‘manual input’ column from ‘recommended’ column and storing the answer to ‘available’ column)

I have got the result of subtractions and can view the data frame on cmd but I do not understand how to write it to Output of Callback function and after trying following code it shows error loading dependencies.


DF= pd.read_csv(

app.layout = html.Div(children=[
html.H4(‘Manual recommendation’),

@app.callback(Output(‘edit-table’, ‘rows’),
[Input(‘edit-table’, ‘rows’)],

def update_table(rows):
df = pd.DataFrame(rows)
df[‘available’] = df[‘recommendation’].astype(int) - df[‘manual input’].astype(int)
return df

You don’t need to use a callback, just create your dataframe and then pass it in the ‘rows’ attribute of dt.DataTable
Callback would be usefull only if you wish to dynamically change your datatable.

Actually I am willing to make dynamic changes on data.
Initially I have a dataframe like this: Q2
which I am displaying in ‘rows’ attribute of dt.Datatable.

Now I want to enter numbers in ‘manual input’ column which should call the callback function and after making calculations ( subtraction : “df[‘available slots’] = df[‘recommendation rounded’].astype(int) - df[‘manual input’].astype(int)”) I want to display complete dataframe in the same rows attribute of that table.
I am confused about the ‘Output’ and ‘Input’ of callbacks because the table id will be same and also rows attribute will be same in Output and Input of callback as I am taking input from a table and want to print output to that same table.