event_system.register_first('before-sign.s3.*', _add_header)

# List zip contents
response = s3.list_objects_v2(Bucket="your-bucket", Prefix="path/to/file.zip/")
print(response)

# Download data.csv stored in the zip file

        self.cid = cid
        self.csec = csec
        self.idp_ep = idp_ep
        self.sts_ep = sts_ep

        # Load CA certificates from SSL_CERT_FILE file if set
        ca_certs = os.environ.get('SSL_CERT_FILE')
        if not ca_certs:
            ca_certs = certifi.where()

        self._http = urllib3.PoolManager(
            timeout=urllib3.Timeout.DEFAULT_TIMEOUT,
            maxsize=10,

# Upload with server side encryption, using temporary credentials
s3.meta.client.upload_file('/etc/hosts',
                           'testbucket',
                           'hosts',
                           ExtraArgs={'ServerSideEncryption': 'AES256'})

# Download encrypted object using temporary credentials