From 13fb4c296662d3eecf859baf6f24552829797a37 Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Sat, 1 Jul 2023 08:27:45 -0700
Subject: [PATCH] Refactor Template into templates.py

---
 llm/__init__.py  | 59 ++++--------------------------------------------
 llm/templates.py | 53 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 55 deletions(-)
 create mode 100644 llm/templates.py

diff --git a/llm/__init__.py b/llm/__init__.py
index d6ff6d2c..8efdc17c 100644
--- a/llm/__init__.py
+++ b/llm/__init__.py
@@ -1,56 +1,5 @@
-from pydantic import BaseModel
-import string
-from typing import Optional
-from .hookspecs import hookimpl  # noqa
-from .hookspecs import hookspec  # noqa
-from .models import Model, Prompt, Response, OptionsError  # noqa
+from .hookspecs import hookimpl
+from .models import Model, Prompt, Response, OptionsError
+from .templates import Template
 
-
-class Template(BaseModel):
-    name: str
-    prompt: Optional[str]
-    system: Optional[str]
-    model: Optional[str]
-    defaults: Optional[dict]
-
-    class Config:
-        extra = "forbid"
-
-    class MissingVariables(Exception):
-        pass
-
-    def execute(self, input, params=None):
-        params = params or {}
-        params["input"] = input
-        if self.defaults:
-            for k, v in self.defaults.items():
-                if k not in params:
-                    params[k] = v
-        if not self.prompt:
-            system = self.interpolate(self.system, params)
-            prompt = input
-        else:
-            prompt = self.interpolate(self.prompt, params)
-            system = self.interpolate(self.system, params)
-        return prompt, system
-
-    @classmethod
-    def interpolate(cls, text, params):
-        if not text:
-            return text
-        # Confirm all variables in text are provided
-        string_template = string.Template(text)
-        vars = cls.extract_vars(string_template)
-        missing = [p for p in vars if p not in params]
-        if missing:
-            raise cls.MissingVariables(
-                "Missing variables: {}".format(", ".join(missing))
-            )
-        return string_template.substitute(**params)
-
-    @staticmethod
-    def extract_vars(string_template):
-        return [
-            match.group("named")
-            for match in string_template.pattern.finditer(string_template.template)
-        ]
+__all__ = ["Template", "Model", "Prompt", "Response", "OptionsError", "hookimpl"]
diff --git a/llm/templates.py b/llm/templates.py
new file mode 100644
index 00000000..4eedbb60
--- /dev/null
+++ b/llm/templates.py
@@ -0,0 +1,53 @@
+from pydantic import BaseModel
+import string
+from typing import Optional
+
+
+class Template(BaseModel):
+    name: str
+    prompt: Optional[str]
+    system: Optional[str]
+    model: Optional[str]
+    defaults: Optional[dict]
+
+    class Config:
+        extra = "forbid"
+
+    class MissingVariables(Exception):
+        pass
+
+    def execute(self, input, params=None):
+        params = params or {}
+        params["input"] = input
+        if self.defaults:
+            for k, v in self.defaults.items():
+                if k not in params:
+                    params[k] = v
+        if not self.prompt:
+            system = self.interpolate(self.system, params)
+            prompt = input
+        else:
+            prompt = self.interpolate(self.prompt, params)
+            system = self.interpolate(self.system, params)
+        return prompt, system
+
+    @classmethod
+    def interpolate(cls, text, params):
+        if not text:
+            return text
+        # Confirm all variables in text are provided
+        string_template = string.Template(text)
+        vars = cls.extract_vars(string_template)
+        missing = [p for p in vars if p not in params]
+        if missing:
+            raise cls.MissingVariables(
+                "Missing variables: {}".format(", ".join(missing))
+            )
+        return string_template.substitute(**params)
+
+    @staticmethod
+    def extract_vars(string_template):
+        return [
+            match.group("named")
+            for match in string_template.pattern.finditer(string_template.template)
+        ]