human
Solve the following python programming problem given the following code:
def _get_metadata(self, path) : 
    requires = None 
    def parse_requires_data(data) : 
        'Create a list of dependencies from a requires.txt file.

            *data*: the contents of a setuptools-produced requires.txt file.
            ' 
        reqs = [] 
        lines = data.splitlines () 
        for line in lines : 
            line = line.strip () 
            if line.startswith ('[') : 
                logger.warning ('Unexpected line: quitting requirement scan: %r', line) 
                break 
r = parse_requirement (line) 
            if (not r) : 
                logger.warning ('Not recognised as a requirement: %r', line) 
                continue 
if r.extras : 
                logger.warning ('extra requirements in requires.txt are not supported') 
if (not r.constraints) : 
                reqs.append (r.name) 
else : 
                cons = ', '.join ((('%s%s' % c) for c in r.constraints)) 
                reqs.append (('%s (%s)' % (r.name, cons))) 
return reqs 
def parse_requires_path(req_path) : 
        'Create a list of dependencies from a requires.txt file.

            *req_path*: the path to a setuptools-produced requires.txt file.
            ' 
        reqs = [] 
        try : 
            with codecs.open (req_path, 'r', 'utf-8') as fp : 
                reqs = parse_requires_data (fp.read ()) 
except IOError : 
            pass 
return reqs 
if path.endswith ('.egg') : 
        if os.path.isdir (path) : 
            meta_path = os.path.join (path, 'EGG-INFO', 'PKG-INFO') 
            metadata = Metadata (path = meta_path, scheme = 'legacy') 
            req_path = os.path.join (path, 'EGG-INFO', 'requires.txt') 
            requires = parse_requires_path (req_path) 
else : 
            zipf = zipimport.zipimporter (path) 
            fileobj = StringIO (zipf.get_data ('EGG-INFO/PKG-INFO').decode ('utf8')) 
            metadata = Metadata (fileobj = fileobj, scheme = 'legacy') 
            try : 
                data = zipf.get_data ('EGG-INFO/requires.txt') 
              ...

    
    

    Fix the buggy line: path = os.path.join (zipf, 'PKG-INFO')
assistant
#Here is Python program to fix the buggy line: path = os.

path = os.path.join (path, 'PKG-INFO')