urlretrieve

Retrieve a URL into a temporary location on disk.

Requires a URL argument. If a filename is passed, it is used as
the temporary file location. The reporthook argument should be
a callable that accepts a block number, a read size, and the
total file size of the URL target. The data argument should be
valid URL encoded data.

If a filename is passed and the URL points to a local resource,
the result is a copy from local file to new file.

Returns a tuple containing the path to the newly created
data file as well as the resulting HTTPMessage object.