human
Solve the following python programming problem given the following code:
def _refresh_buckets_cache_file(cache_file) : 
    '
    Retrieve the content of all buckets and cache the metadata to the buckets
    cache file
    ' 
    log.debug ('Refreshing buckets cache file') 
    (key, keyid, service_url, verify_ssl, kms_keyid, location) = _get_s3_key () 
    metadata = { 
        
} 
    def __get_s3_meta(bucket, key = key, keyid = keyid) : 
        return s3.query (key = key, keyid = keyid, kms_keyid = keyid, bucket = bucket, service_url = service_url, verify_ssl = verify_ssl, location = location, return_bin = False) 
if _is_env_per_bucket () : 
        for (saltenv, buckets) in six.iteritems (_get_buckets ()) : 
            bucket_files = { 
                
} 
            for bucket_name in buckets : 
                s3_meta = __get_s3_meta (env_files) 
                if (not s3_meta) : 
                    continue 
bucket_files [bucket_name] = [k for k in s3_meta if ('Key' in k)] 
                if (len (bucket_files [bucket_name]) == 0) : 
                    meta_response = { 
                        
} 
                    for k in s3_meta : 
                        if (('Code' in k) or ('Message' in k)) : 
                            meta_response.update (k) 
try : 
                        log.warning ("'{0}' response for bucket '{1}'".format (meta_response ['Message'], bucket_name)) 
                        continue 
except KeyError : 
                        if ('Code' in meta_response) : 
                            log.warning ("'{0}' response for bucket '{1}'".format (meta_response ['Code'], bucket_name)) 
                            continue 
else : 
                            log.warning ('S3 Error! Do you have any files in your S3 bucket?') 
                            return { 
                                
} 
metadata [saltenv] = bucket_files 
else : 
        for bucket_name in _get_buckets () : 
            s3_meta = __get_s3_meta (bucket_name) 
            if (not s3_meta) : 
                continue 
files = [k for k in s3_meta if ('Key' in k)] 
       ...

    
    

    Fix the buggy line: s3_meta = __get_s3_meta (env_files)
assistant
#Here is Python code to fix the buggy line: s3_meta = __get_s3_meta (env_files)
.

s3_meta = __get_s3_meta (bucket_name)