Class PromptTemplate (1.95.1)

A prompt template for creating prompts with variables.

The PromptTemplate class allows users to define a template string with variables represented in curly braces {variable}. The variable names cannot contain spaces and must start with a letter or underscore, followed by letters, digits, or underscore. These variables can be replaced with specific values using the assemble method, providing flexibility in generating dynamic prompts.

Usage:

```
template_str = "Hello, {name}! Today is {day}. How are you?"
prompt_template = PromptTemplate(template_str)
completed_prompt = prompt_template.assemble(name="John", day="Monday")
print(completed_prompt)
```

Initializes the PromptTemplate with a given template.

Returns a string representation of the PromptTemplate.

Returns the template string.

Replaces only the provided variables in the template with specific values.