how to download the data source associated with a workbook?

I am using "Tableau Server Client(Python) and Python 3.9" and trying to download the data source and publish to a server.

when i try to parse through all available data sources i am able to download the data source file, however, when i try to find the data source associated with a workbook i am unable to download it. 

I am trying to download the data source associated with a workbook but unable to do so.

here is the relevant code

```

with server.auth.sign_in(tableau_auth):

  """

  for ds in TSC.Pager(server.datasources):

    if ds.project_name == "project_name":

      print(ds.id)

      fp = server.datasources.download(ds.id)

      print("\n downloaded the file to {0}", format(fp))   

  """

  #the above works

  for workbook in TSC.Pager(server.workbooks):

    if workbook.project_name == "project_name":

      server.workbooks.populate_connections(workbook)

      for con in workbook.connections:

        ds = server.datasources.get_by_id(con.datasource_id)

        server.datasources.download(ds.id) ⌗this does not work and give a 404 error

```

please check my comments inline where the i get 404 error when trying to download data source associated with a workbook

the datasource id seems to be different when checking server.datasources and server.workbooks. for example the below code produce this output

```

  for ds in TSC.Pager(server.datasources):

    if ds.project_name == "Test(Akshar)":

      print(ds.id)

  for workbook in TSC.Pager(server.workbooks):

    if workbook.project_name == "Test(Akshar)":

      server.workbooks.populate_connections(workbook)

      for con in workbook.connections:

        print(con.datasource_id)

```

produces this output

```

f648e7c4-d3e2-4ca9-8b65-59a42cc28a35

364fd4d8-ae62-4051-b59b-8ef3fdd624d7

3fdd7fcc-9052-474c-bf17-45636e2b1060

```