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Added partial_variables to BaseStringMessagePromptTemplate.from_template(...) (#13645)

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**Description:** BaseStringMessagePromptTemplate.from_template was
passing the value of partial_variables into cls(...) via **kwargs,
rather than passing it to PromptTemplate.from_template. Which resulted
in those *partial_variables being* lost and becoming required
*input_variables*.

Co-authored-by: Josep Pon Farreny <josep.pon-farreny@siemens.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>
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Josep Pon Farreny 2023-11-22 02:48:38 +01:00 committed by GitHub
parent c5ae9f832d
commit 143049c90f
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1 changed files with 12 additions and 1 deletions
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13
libs/core/langchain_core/prompts/chat.py
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@ -8,6 +8,7 @@ from typing import (
Callable,
Dict,
List,
Optional,
Sequence,
Set,
Tuple,
@ -136,6 +137,7 @@ class BaseStringMessagePromptTemplate(BaseMessagePromptTemplate, ABC):
cls: Type[MessagePromptTemplateT],
template: str,
template_format: str = "f-string",
partial_variables: Optional[Dict[str, Any]] = None,
**kwargs: Any,
) -> MessagePromptTemplateT:
"""Create a class from a string template.
@ -143,12 +145,21 @@ class BaseStringMessagePromptTemplate(BaseMessagePromptTemplate, ABC):
Args:
template: a template.
template_format: format of the template.
partial_variables: A dictionary of variables that can be used to partially
fill in the template. For example, if the template is
`"{variable1} {variable2}"`, and `partial_variables` is
`{"variable1": "foo"}`, then the final prompt will be
`"foo {variable2}"`.
**kwargs: keyword arguments to pass to the constructor.
Returns:
A new instance of this class.
"""
prompt = PromptTemplate.from_template(template, template_format=template_format)
prompt = PromptTemplate.from_template(
template,
template_format=template_format,
partial_variables=partial_variables,
)
return cls(prompt=prompt, **kwargs)
@classmethod