langchain_core.prompts.chat.BaseMessagePromptTemplate¶

class langchain_core.prompts.chat.BaseMessagePromptTemplate[source]¶

Bases: Serializable, ABC

Base class for message prompt templates.

async aformat_messages(**kwargs: Any) → List[BaseMessage][source]¶

Async format messages from kwargs. Should return a list of BaseMessages.

Parameters

**kwargs (Any) – Keyword arguments to use for formatting.

Returns

List of BaseMessages.

Return type

List[BaseMessage]

abstract format_messages(**kwargs: Any) → List[BaseMessage][source]¶

Format messages from kwargs. Should return a list of BaseMessages.

Parameters

**kwargs (Any) – Keyword arguments to use for formatting.

Returns

List of BaseMessages.

Return type

List[BaseMessage]

pretty_print() → None[source]¶

Print a human-readable representation.

Return type

None

pretty_repr(html: bool = False) → str[source]¶

Human-readable representation.

Parameters

html (bool) – Whether to format as HTML. Defaults to False.

Returns

Human-readable representation.

Return type

str

abstract property input_variables: List[str]¶

Input variables for this prompt template.

Returns

List of input variables.