# coding:utf-8 class MetaData(object): def __init__(self): self.algorithm = '' self.credential_scope = '' self.signed_headers = '' self.date = '' self.region = '' self.service = '' def set_date(self, date): self.date = date def set_service(self, service): self.service = service def set_region(self, region): self.region = region def set_algorithm(self, algorithm): self.algorithm = algorithm def set_credential_scope(self, credential_scope): self.credential_scope = credential_scope def set_signed_headers(self, signed_headers): self.signed_headers = signed_headers