def ensure_task_params_are_complete(task_descriptors):
for task_desc in task_descriptors:<EOL><INDENT>for param in [<EOL>'<STR_LIT>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>', '<STR_LIT>',<EOL>'<STR_LIT>'<EOL>]:<EOL><INDENT>if not task_desc.task_params.get(param):<EOL><INDENT>task_desc.task_params[param] = set()<EOL><DEDENT><DEDENT><DEDENT>
For each task, ensure that each task param entry is not None.