interpolate_file

interpolate_file(
    path,
    *,
    variables=None,
    variable_start='{{',
    variable_end='}}',
)

Interpolate variables into a prompt from a file

This is a light-weight wrapper around the Jinja2 templating engine, making it easier to interpolate dynamic data into a static prompt. Compared to f-strings, which expects you to wrap dynamic values in { }, this function expects { } instead, making it easier to include Python code and JSON in your prompt.

Parameters

Name	Type	Description	Default
path	Union[str, Path]	The path to the file containing the prompt to interpolate.	required
variables	Optional[dict[str, Any]]	A dictionary of variables to interpolate into the prompt. If not provided, the caller’s global and local variables are used.	None
variable_start	str	The string that marks the beginning of a variable.	'{{'
variable_end	str	The string that marks the end of a variable.	'}}'

Returns

Name	Type	Description
	str	The prompt with variables interpolated.

See Also

interpolate Interpolating data into a system prompt