The python scripting engine allows to access and manipulate TIS Parameters. Parameters are kept as dictionary with tracking function in the first argument of the run, simple_main, and main functions.
Most standard python dictionary methods are provided:
Check if parameter name exists
async def run(params, in_tables, out_tables, in_files, out_files, misc): "Parameter name" in params params.has_key("Parameter name")Get parameter value
async def run(params, in_tables, out_tables, in_files, out_files, misc): param_value = params["Parameter name"] param_value = params.get("Parameter name", "Default value")Set parameter value
async def run(params, in_tables, out_tables, in_files, out_files, misc): params["Parameter name"] = "New value" It is not possible to add a parameter, this throws an exception.