Prompt template that contains few shot examples.
Decorator to mark a function, a class, or a property as deprecated.
When deprecating a classmethod, a staticmethod, or a property, the @deprecated
decorator should go under @classmethod and @staticmethod (i.e., deprecated
should directly decorate the underlying callable), but over @property.
When deprecating a class C intended to be used as a base class in a multiple
inheritance hierarchy, C must define an __init__ method (if C instead
inherited its __init__ from its own base class, then @deprecated would mess up
__init__ inheritance when installing its own (deprecation-emitting) C.__init__).
Parameters are the same as for warn_deprecated, except that obj_type defaults to
'class' if decorating a class, 'attribute' if decorating a property, and 'function'
otherwise.
Convert a sequence of messages to strings and concatenate them into one string.
Check that template string is valid.
Get the variables from the template.
Interface for selecting examples to include in prompts.
Base abstract message class.
Messages are the inputs and outputs of a chat model.
Examples include HumanMessage,
AIMessage, and
SystemMessage.
Base class for chat prompt templates.
Base class for message prompt templates.
Prompt template for a language model.
A prompt template consists of a string template. It accepts a set of parameters from the user that can be used to generate a prompt for a language model.
The template can be formatted using either f-strings (default), jinja2, or mustache syntax.
Prefer using template_format='f-string' instead of template_format='jinja2',
or make sure to NEVER accept jinja2 templates from untrusted sources as they may
lead to arbitrary Python code execution.
As of LangChain 0.0.329, Jinja2 templates will be rendered using Jinja2's SandboxedEnvironment by default. This sand-boxing should be treated as a best-effort approach rather than a guarantee of security, as it is an opt-out rather than opt-in approach.
Despite the sandboxing, we recommend to never use jinja2 templates from untrusted sources.
String prompt that exposes the format method, returning a prompt.
Prompt template that contains few shot examples.
Chat prompt template that supports few-shot examples.
The high level structure of produced by this prompt template is a list of messages consisting of prefix message(s), example message(s), and suffix message(s).
This structure enables creating a conversation with intermediate examples like:
System: You are a helpful AI Assistant
Human: What is 2+2?
AI: 4
Human: What is 2+3?
AI: 5
Human: What is 4+4?This prompt template can be used to generate a fixed list of examples or else to dynamically select examples based on the input.