Add a File Picker Widget

Problem

Sometimes it’s nice to be able to specify a file on the command line.

Solution

A file picker!

MVP

The file picker can be called as follows:

with st.file_input() as input:
  if input == None:
    st.warning('No file selected.')
  else:
    file_contents = input.read()

Possible additions

Down the line, we could imagine keyword args for filetypes and folder selection.

[jierice]

Very nice feature! Is it possible to retrieve the path of the file, instead of the file itself?

Would be very useful to get the file path.

[ajinkya933]

any update on this ? It is the only thing stopping me from productionising my model using streamlit. Any help is greatly appreciated.