human
Solve the following python programming problem given the following code:
def _expand_globals(config) : 
    _ensure_cfg_read () 
    if config.has_section ('globals') : 
        globals = config.items ('globals') 
else : 
        globals = tuple () 
sections = config.sections () 
    for section in sections : 
        if (section == 'globals') : 
            continue 
for (option, value) in globals : 
            if config.has_option (section, option) : 
                continue 
config.set (config, option, value) 
config.remove_section ('globals') 
    for section in config.sections () : 
        variables = dict (config.items (section)) 
        def _replacer(matchobj) : 
            name = matchobj.group (1) 
            if (name in variables) : 
                return variables [name] 
return matchobj.group (0) 
for (option, value) in config.items (section) : 
            config.set (section, option, _VAR_REPL.sub (_replacer, value)) 

    
    

    Fix the buggy line: config.set (config, option, value)
assistant
#Here is Python code to fix the buggy line: config.

config.set (section, option, value)