Prompting Strategies: Prompt Templates

LangChain facilitates the use of model-agnostic templates, allowing for the ease of use of existing templates across various language models.

The PromptTemplate utilizes Python’s str.format method for its templating mechanism: str.format(*args, **kwargs). This method is invoked on a string that can contain plain text with replacement fields enclosed within braces {}. These fields can specify either the numeric index of a positional argument or the name of a keyword argument. The method produces a new string where each replacement field is substituted with the string representation of the corresponding argument.

Example: