Class ChatSession (1.85.0)

  ChatSession 
 ( 
 model 
 : 
 vertexai 
 . 
 language_models 
 . 
 ChatModel 
 , 
 context 
 : 
 typing 
 . 
 Optional 
 [ 
 str 
 ] 
 = 
 None 
 , 
 examples 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 vertexai 
 . 
 language_models 
 . 
 InputOutputTextPair 
 ] 
 ] 
 = 
 None 
 , 
 max_output_tokens 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 temperature 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 top_k 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 top_p 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 message_history 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 vertexai 
 . 
 language_models 
 . 
 ChatMessage 
 ] 
 ] 
 = 
 None 
 , 
 stop_sequences 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 str 
 ]] 
 = 
 None 
 , 
 ) 
 

ChatSession represents a chat session with a language model.

Within a chat session, the model keeps context and remembers the previous conversation.

Properties

message_history

List of previous messages.

Methods

send_message

  send_message 
 ( 
 message 
 : 
 str 
 , 
 * 
 , 
 max_output_tokens 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 temperature 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 top_k 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 top_p 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 stop_sequences 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 str 
 ]] 
 = 
 None 
 , 
 candidate_count 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 grounding_source 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 Union 
 [ 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 WebSearch 
 , 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 VertexAISearch 
 , 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 InlineContext 
 , 
 ] 
 ] 
 = 
 None 
 ) 
 - 
> vertexai 
 . 
 language_models 
 . 
 MultiCandidateTextGenerationResponse 
 

Sends message to the language model and gets a response.

send_message_async

  send_message_async 
 ( 
 message 
 : 
 str 
 , 
 * 
 , 
 max_output_tokens 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 temperature 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 top_k 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 top_p 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 stop_sequences 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 str 
 ]] 
 = 
 None 
 , 
 candidate_count 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 grounding_source 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 Union 
 [ 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 WebSearch 
 , 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 VertexAISearch 
 , 
 vertexai 
 . 
 language_models 
 . 
 _language_models 
 . 
 InlineContext 
 , 
 ] 
 ] 
 = 
 None 
 ) 
 - 
> vertexai 
 . 
 language_models 
 . 
 MultiCandidateTextGenerationResponse 
 

Asynchronously sends message to the language model and gets a response.

send_message_streaming

  send_message_streaming 
 ( 
 message 
 : 
 str 
 , 
 * 
 , 
 max_output_tokens 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 temperature 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 top_k 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 top_p 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 stop_sequences 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 str 
 ]] 
 = 
 None 
 ) 
 - 
> typing 
 . 
 Iterator 
 [ 
 vertexai 
 . 
 language_models 
 . 
 TextGenerationResponse 
 ] 
 

Sends message to the language model and gets a streamed response.

The response is only added to the history once it's fully read.

send_message_streaming_async

  send_message_streaming_async 
 ( 
 message 
 : 
 str 
 , 
 * 
 , 
 max_output_tokens 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 temperature 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 top_k 
 : 
 typing 
 . 
 Optional 
 [ 
 int 
 ] 
 = 
 None 
 , 
 top_p 
 : 
 typing 
 . 
 Optional 
 [ 
 float 
 ] 
 = 
 None 
 , 
 stop_sequences 
 : 
 typing 
 . 
 Optional 
 [ 
 typing 
 . 
 List 
 [ 
 str 
 ]] 
 = 
 None 
 ) 
 - 
> typing 
 . 
 AsyncIterator 
 [ 
 vertexai 
 . 
 language_models 
 . 
 TextGenerationResponse 
 ] 
 

Asynchronously sends message to the language model and gets a streamed response.

The response is only added to the history once it's fully read.

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