def execute(mp):
<EOL>with mp.open("<STR_LIT>", resampling="<STR_LIT>") as raster_file:<EOL><INDENT>if raster_file.is_empty():<EOL><INDENT>return "<STR_LIT>"<EOL><DEDENT>dem = raster_file.read()<EOL><DEDENT>return dem<EOL>
Example process for testing.

Inputs:
-------
file1
    raster file

Parameters:
-----------

Output:
-------
np.ndarray