Update app.py

app.py

@@ -101,30 +101,65 @@ def load_passage_info(xlsx_path: str) -> pd.DataFrame:
 
 
 # =========================
-# プロンプト（★1本固定：元の1つ目だけ）
+# プロンプト（★1本固定：置き換え）
 # =========================
 def build_prompt(text: str, target_level: int, original_fre: Optional[float] = None) -> str:
     target_flesch = target_flesch_from_level(target_level)
 
-    # ★追加：書き換え前スコア（情報として渡すだけ。Requirementsは一切変更しない）
-    original_line = ""
-    if original_fre is not None:
-        try:
-            original_line = f"Original Flesch Reading Ease (before rewriting): {float(original_fre):.2f}\n"
-        except Exception:
-            original_line = ""
+    # original_fre が無い/壊れてる場合のフォールバック（仕様は変えない範囲で安全に）
+    try:
+        original_fre_val = float(original_fre) if original_fre is not None else float("nan")
+    except Exception:
+        original_fre_val = float("nan")
 
     return f"""
-Rewrite the following text to achieve a Flesch Readability Score of {target_flesch}.
-Requirements:
-- Rewriting and readability score adjustments should target only the main text;
-  Other text (e.g., introductions, chapter headings, titles) may be used as contextual aids during rewriting, and should only be included in the output as main text when absolutely necessary for understanding.
-- Clearly separate sections such as chapters by inserting blank lines between them.
-- Maintain the original meaning faithfully; do not add or remove important information.
-- Rewrite texts into clear, modern English by removing archaic expressions and unnatural syntax typical of older texts at all levels.
-- Key points to keep in mind when lowering reading comprehension difficulty include keeping sentences short, using familiar vocabulary, prioritizing simple sentence structures, avoiding jargon or providing clear explanations when used, and minimizing figurative language, idioms, and other expressions where meaning cannot be directly inferred from the words themselves.
-- Output only the rewritten text. Do not include explanatory notes or other additional text.
-{original_line}{text}
+The Flesch Reading Ease score is a numeric measure of text readability,
+where higher scores indicate easier readability and lower scores indicate more difficult text.
+
+In this task, we are trying to rewrite a given text into the target Flesch Reading Ease score
+and preserving the original meaning and information.
+
+Given the original draft (Flesch Reading Ease = {original_fre_val}):
+
+[TEXT START]
+{text}
+[TEXT END]
+
+Rewrite the above text to the difficulty level of:
+Flesch Reading Ease = {target_flesch}
+
+Follow the instructions below carefully.
+
+Content preservation:
+- Maintain the original meaning faithfully.
+- Do not add new information.
+- Do not remove important information.
+- Do not introduce interpretations or opinions that are not present in the original text.
+
+Scope of rewriting:
+- Apply rewriting and readability adjustments only to the main text.
+- Use titles, headings, or introductory text only as contextual aids.
+- Include such contextual text in the output only if it is absolutely necessary for understanding.
+
+Readability control guidelines:
+- Make sentences shorter.
+- Prefer familiar, high-frequency vocabulary.
+- Use simple and direct sentence structures.
+- Avoid jargon; if technical terms are necessary, explain them clearly in simple language.
+- Minimize figurative language, idioms, and expressions whose meanings are not directly inferable.
+
+Language modernization:
+- Rewrite the text in clear, modern English.
+- Remove archaic expressions and unnatural or outdated syntax typical of older texts at all levels..
+
+Structure and formatting:
+- Clearly separate sections (e.g., chapters or paragraphs) by inserting blank lines.
+- Preserve the logical structure of the original text.
+
+Output constraints:
+- Output only the rewritten text.
+- Do not include explanations, comments, or metadata.
+- Do not include [TEXT START] and [TEXT END] in the output.
 """.strip()
 
 
@@ -317,7 +352,7 @@ def run_one(level: int, state: dict):
 
     original_fre = float(state.get("orig_score_map", {}).get(text_id, float("nan")))
 
-    # ★変更：original_fre をプロンプトに渡す（プロンプト文面は維持）
+    # ★変更：original_fre をプロンプトに渡す
     rewritten, used_prompt = rewrite_level(original, target_level=level, original_fre=original_fre)
     rewritten_fre, wc = compute_metrics(rewritten)
 
@@ -387,7 +422,6 @@ def run_all(level: int, state: dict):
 
         original_fre = float(state.get("orig_score_map", {}).get(text_id, float("nan")))
 
-        # ★変更：original_fre をプロンプトに渡す（プロンプト文面は維持）
         rewritten, used_prompt = rewrite_level(original, target_level=level, original_fre=original_fre)
         rewritten_fre, wc = compute_metrics(rewritten)