human
Solve the following python programming problem given the following code:
def compile(marker) : 
    'Return compiled marker as a function accepting an environment dict.' 
    try : 
        return _cache [marker] 
except KeyError : 
        pass 
if (not marker.strip ()) : 
        def marker_fn(environment = None, override = None) : 
            '' 
            return True 
else : 
        compiled_marker = compile_marker (parse_marker (compiled_marker)) 
        def marker_fn(environment = None, override = None) : 
            'override updates environment' 
            if (override is None) : 
                override = { 
                    
} 
if (environment is None) : 
                environment = default_environment () 
environment.update (override) 
            return eval (compiled_marker, environment) 
marker_fn.__doc__ = marker 
    _cache [marker] = marker_fn 
    return _cache [marker] 

    
    

    Fix the buggy line: compiled_marker = compile_marker (parse_marker (compiled_marker))
assistant
#Here is Python program to fix the buggy line: compiled_marker = compile_marker (parse_marker (compiled_marker))
.

compiled_marker = compile_marker (parse_marker (marker))