human
Solve the following python programming problem given the following code:
def __init__(self, paths = []) : 
    self.order = ['backend', 'repomanager', 'metadata', 'validator', 'transformer', 'instrumentation', 'representation'] 
    self.plugins = { 
        'backend' : { 
            
}, 
        'instrumentation' : { 
            
}, 
        'repomanager' : { 
            
}, 
        'metadata' : { 
            
}, 
        'validator' : { 
            
}, 
        'transformer' : { 
            
}, 
        'representation' : { 
            
}, 
} 
    self.sources = { 
        
} 
    thisdir = os.path.abspath (os.path.dirname (__file__)) 
    def get_path(p) : 
        return os.path.abspath (os.path.join (thisdir, '../contrib', p)) 
allplugins = [{ 
        'package' : 'backend', 
        'base' : get_path ('backends'), 
}, { 
        'package' : 'instrumentation', 
        'base' : get_path ('instrumentations'), 
}, { 
        'package' : 'repomanager', 
        'base' : get_path ('repomanagers'), 
}, { 
        'package' : 'metadata', 
        'base' : get_path ('metadata'), 
}, { 
        'package' : 'validator', 
        'base' : get_path ('validators'), 
}, { 
        'package' : 'transformer', 
        'base' : get_path ('transformers'), 
}, { 
        'package' : 'representation', 
        'base' : get_path ('representations'), 
}] 
    for p in allplugins : 
        plugin_base = PluginBase (package = p ['package'], searchpath = [thisdir ['base']]) 
        source = plugin_base.make_plugin_source (searchpath = [], identifier = 'Plugin Manager') 
        for plugin_name in source.list_plugins () : 
            plugin = source.load_plugin (plugin_name) 
            plugin.setup (self) 
self.sources [p ['package']] = source 
self.discover_all_plugins () 

    
    

    Fix the buggy line: plugin_base = PluginBase (package = p ['package'], searchpath = [thisdir ['base']])
assistant
#Here is Python program to fix the buggy line: plugin_base = PluginBase (package = p ['package'], searchpath = [thisdir ['base']])
.

plugin_base = PluginBase (package = p ['package'], searchpath = [p ['base']])