BaseMessagePromptTemplate

class langchain_core.prompts.chat.BaseMessagePromptTemplate

Bases: Serializable, ABC

Base class for message prompt templates.

async aformat_messages(**kwargs: Any) → list[BaseMessage]

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]

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

Print a human-readable representation.

Return type:

None

pretty_repr(html: bool = False) → str

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.