Rerun on new upload - st.file_uploader

Using Streamlit
,
1

I want my app to update everytime data is uploaded with st.file_uploader. It seems to do this only when a completely new file (or file with different name) is uploaded but not when the same file (or file with same name) is uploaded. In my app, the user will upload a csv and edit it with st.data_editor. I want him to be able to reupload the same file to start over if necessary. The following code illustrates the problem:

import streamlit as st
import pandas as pd

uploaded_file = st.file_uploader(label="Upload CSV", type="csv")
if uploaded_file is not None:
    df = pd.read_csv(uploaded_file)
    df_new = st.data_editor(df, num_rows="dynamic")

For the data, I am using the following data.csv contents:

col_1,col_2
1,2
3,4
5,6
7,8

I want the data in the st.data_editor to be reset every time the user uploads data.csv . Right now, if I edit the dataframe (say by deleting a row), then upload the data again, nothing changes.

3

I reproduced your snippet, but every time I upload a new file it is properly rendered and the view is changed accordingly.

Are you sure that there isn’t anything else that’s worth checking?