parameters: (self, ClientMethod, Params=None, ExpiresIn=3600,
                             HttpMethod=None)
return_statement: return request_signer.generate_presigned_url(
          request_dict=request_dict, expires_in=expires_in,
          operation_name=operation_name)
docstring: Generate a presigned url given a client, its method, and arguments
  
      :type ClientMethod: string
      :param ClientMethod: The client method to presign for
  
      :type Params: dict
      :param Params: The parameters normally passed to
          ``ClientMethod``.
  
      :type ExpiresIn: int
      :param ExpiresIn: The number of seconds the presigned url is valid
          for. By default it expires in an hour (3600 seconds)
  
      :type HttpMethod: string
      :param HttpMethod: The http method to use on the generated url. By
          default, the http method is whatever is used in the method's model.
  
      :returns: The presigned url
docstring_summary: Generate a presigned url given a client, its method, and arguments
docstring_tokens: Generate a presigned url given a client its method and arguments
function: def generate_presigned_url(self, ClientMethod, Params=None, ExpiresIn=3600,
                             HttpMethod=None):
      """Generate a presigned url given a client, its method, and arguments
  
      :type ClientMethod: string
      :param ClientMethod: The client method to presign for
  
      :type Params: dict
      :param Params: The parameters normally passed to
          ``ClientMethod``.
  
      :type ExpiresIn: int
      :param ExpiresIn: The number of seconds the presigned url is valid
          for. By default it expires in an hour (3600 seconds)
  
      :type HttpMethod: string
      :param HttpMethod: The http method to use on the generated url. By
          default, the http method is whatever is used in the method's model.
  
      :returns: The presigned url
      """
      client_method = ClientMethod
      params = Params
      if params is None:
          params = {}
      expires_in = ExpiresIn
      http_method = HttpMethod
      context = {
          'is_presign_request': True,
          'use_global_endpoint': _should_use_global_endpoint(self),
      }
  
      request_signer = self._request_signer
      serializer = self._serializer
  
      try:
          operation_name = self._PY_TO_OP_NAME[client_method]
      except KeyError:
          raise UnknownClientMethodError(method_name=client_method)
  
      operation_model = self.meta.service_model.operation_model(
          operation_name)
  
      params = self._emit_api_params(params, operation_model, context)
  
      # Create a request dict based on the params to serialize.
      request_dict = serializer.serialize_to_request(
          params, operation_model)
  
      # Switch out the http method if user specified it.
      if http_method is not None:
          request_dict['method'] = http_method
  
      # Prepare the request dict by including the client's endpoint url.
      prepare_request_dict(
          request_dict, endpoint_url=self.meta.endpoint_url, context=context)
  
      # Generate the presigned url.
      return request_signer.generate_presigned_url(
          request_dict=request_dict, expires_in=expires_in,
          operation_name=operation_name)
function_tokens: def generate_presigned_url ( self , ClientMethod , Params = None , ExpiresIn = 3600 , HttpMethod = None ) : client_method = ClientMethod params = Params if params is None : params = { } expires_in = ExpiresIn http_method = HttpMethod context = { 'is_presign_request' : True , 'use_global_endpoint' : _should_use_global_endpoint ( self ) , } request_signer = self . _request_signer serializer = self . _serializer try : operation_name = self . _PY_TO_OP_NAME [ client_method ] except KeyError : raise UnknownClientMethodError ( method_name = client_method ) operation_model = self . meta . service_model . operation_model ( operation_name ) params = self . _emit_api_params ( params , operation_model , context ) # Create a request dict based on the params to serialize. request_dict = serializer . serialize_to_request ( params , operation_model ) # Switch out the http method if user specified it. if http_method is not None : request_dict [ 'method' ] = http_method # Prepare the request dict by including the client's endpoint url. prepare_request_dict ( request_dict , endpoint_url = self . meta . endpoint_url , context = context ) # Generate the presigned url. return request_signer . generate_presigned_url ( request_dict = request_dict , expires_in = expires_in , operation_name = operation_name )