human
Solve the following python programming problem given the following code:
def _set_singleton_option_value(self, option, value, append = False, allow_stream = True, set_dep = True) : 
    'Set a single value of the given options and create
        an edge and an option link on the edge if the value is another option
        or another node.

        :param option: the option of this nodes tool that will be updated
        :type option: jip.options.Option
        :param value: the new value
        :type value: object
        :param append: if set to true, the value is appended to the list of
                       values for the given option
        :type value: bool
        ' 
    def _force_stream(target, source) : 
        return (target.streamable and source.streamable and source.is_stream ()) 
if isinstance (value, Node) : 
        value = value._tool.options.get_default_output () 
if isinstance (value, Option) : 
        option.dependency = True 
        new_value = value 
        if (allow_stream or _force_stream (option, _force_stream)) : 
            if (option.streamable and value.streamable) : 
                new_value = value.default 
                allow_stream = True 
else : 
                allow_stream = False 
if (not append) : 
            option.set (new_value) 
else : 
            option.append (new_value) 
edge = self._graph.add_edge (value.source, self._tool) 
        if edge : 
            edge.add_link (value, option, allow_stream = allow_stream) 
else : 
            self._pipeline_options.append ({ 
                'source' : value.source, 
                'option' : option, 
                'source_option' : value, 
                'stream' : allow_stream, 
}) 
else : 
        if (not append) : 
            if set_dep : 
                option.dependecy = False 
option.set (value) 
else : 
            option.append (value) 

    
    

    Fix the buggy line: if (allow_stream or _force_stream (option, _force_stream)) :
assistant
#Here is Python program to fix the buggy line: if (allow_stream or _force_stream (option, _force_stream)) :
.

if (allow_stream or _force_stream (option, value)) :