human
Solve the following python programming problem given the following code:
@debug.increase_indent
def search_params(evaluator, execution_context, funcdef):
assistant
#Here is the Python program you requested.

    """A dynamic search for param values. If you try to complete a type:
    >>> def func(foo):
    ...     foo
    >>> func(1)
    >>> func("")
    It is not known what the type ``foo`` without analysing the whole code. You
    have to look for all calls to ``func`` to find out what ``foo`` possibly
    is.
    """
    if (not settings.dynamic_params):
        return set()
    evaluator.dynamic_params_depth += 1
    try:
        debug.dbg('Dynamic    param    search    in    %s.', funcdef.name.value, color='MAGENTA')
        module_context = execution_context.get_root_context()
        function_executions = _search_function_executions(evaluator, module_context, funcdef)
        if function_executions:
            zipped_params = zip(*list((function_execution.get_params() for function_execution in function_executions)))
            params = [MergedExecutedParams(executed_params) for executed_params in zipped_params]
        else:
            params = [create_default_param(execution_context, p) for p in funcdef.params]
        debug.dbg('Dynamic    param    result    finished', color='MAGENTA')
        return params
    finally:
        evaluator.dynamic_params_depth -= 1