check_valid_template

langchain_core.prompts.string.check_valid_template(template: str, template_format: str, input_variables: list[str]) → None

Check that template string is valid.

Parameters:

• template (str) – The template string.

• template_format (str) – The template format. Should be one of “f-string” or “jinja2”.

• input_variables (list[str]) – The input variables.

Raises:

• ValueError – If the template format is not supported.

• ValueError – If the prompt schema is invalid.

Return type:

None