airflow/hooks/S3_hook.py
def get_wildcard_key(self, wildcard_key, bucket_name=None, delimiter=''):
        """
        Returns a boto3.s3.Object object matching the wildcard expression

        :param wildcard_key: the path to the key
        :type wildcard_key: str
        :param bucket_name: the name of the bucket
        :type bucket_name: str
        :param delimiter: the delimiter marks key hierarchy
        :type delimiter: str
        """
        if not bucket_name:
            (bucket_name, wildcard_key) = self.parse_s3_url(wildcard_key)

        prefix = re.split(r'[*]', wildcard_key, 1)[0]
        klist = self.list_keys(bucket_name, prefix=prefix, delimiter=delimiter)
        if klist:
            key_matches = [k for k in klist if fnmatch.fnmatch(k, wildcard_key)]
            if key_matches:
                return self.get_key(key_matches[0], bucket_name)
def get_wildcard_key(self, wildcard_key, bucket_name=None, delimiter=''):
        """
        Returns a boto3.s3.Object object matching the wildcard expression

        :param wildcard_key: the path to the key
        :type wildcard_key: str
        :param bucket_name: the name of the bucket
        :type bucket_name: str
        :param delimiter: the delimiter marks key hierarchy
        :type delimiter: str
        """
        if not bucket_name:
            (bucket_name, wildcard_key) = self.parse_s3_url(wildcard_key)

        prefix = re.split(r'[*]', wildcard_key, 1)[0]
        klist = self.list_keys(bucket_name, prefix=prefix, delimiter=delimiter)
        if klist:
            key_matches = [k for k in klist if fnmatch.fnmatch(k, wildcard_key)]
            if key_matches:
                return self.get_key(key_matches[0], bucket_name)
Returns a boto3.s3.Object object matching the wildcard expression

        :param wildcard_key: the path to the key
        :type wildcard_key: str
        :param bucket_name: the name of the bucket
        :type bucket_name: str
        :param delimiter: the delimiter marks key hierarchy
        :type delimiter: str