# AGENTS.md ## Context - This project exposes a Flask API that uses Playwright to scrape Yahoo Finance options chains. - Entry point: `scraper_service.py` (launched via `runner.bat` or directly with Python). - API route: `GET /scrape_sync` with `stock` and optional `expiration|expiry|date` parameters. - Expiration inputs: epoch seconds (Yahoo date param) or date strings supported by `DATE_FORMATS`. ## Docker - Build: `docker build -t :latest .` - Run: `docker run --rm -p 9777:9777 :latest` - The container uses the Playwright base image with bundled browsers. ## Line-by-line explanation of scraper_service.py - Line 1: Import symbols from flask. Code: `from flask import Flask, jsonify, request` - Line 2: Import symbols from playwright.sync_api. Code: `from playwright.sync_api import sync_playwright` - Line 3: Import symbols from bs4. Code: `from bs4 import BeautifulSoup` - Line 4: Import symbols from datetime. Code: `from datetime import datetime, timezone` - Line 5: Import module urllib.parse. Code: `import urllib.parse` - Line 6: Import module logging. Code: `import logging` - Line 7: Import module re. Code: `import re` - Line 8: Import module time. Code: `import time` - Line 9: Blank line for readability. Code: `` - Line 10: Create the Flask application instance. Code: `app = Flask(__name__)` - Line 11: Blank line for readability. Code: `` - Line 12: Comment describing the next block. Code: `# Logging` - Line 13: Configure logging defaults. Code: `logging.basicConfig(` - Line 14: Execute the statement as written. Code: `level=logging.INFO,` - Line 15: Execute the statement as written. Code: `format="%(asctime)s [%(levelname)s] %(message)s"` - Line 16: Close the current block or container. Code: `)` - Line 17: Set the Flask logger level. Code: `app.logger.setLevel(logging.INFO)` - Line 18: Blank line for readability. Code: `` - Line 19: Define accepted expiration date string formats. Code: `DATE_FORMATS = (` - Line 20: Execute the statement as written. Code: `"%Y-%m-%d",` - Line 21: Execute the statement as written. Code: `"%Y/%m/%d",` - Line 22: Execute the statement as written. Code: `"%Y%m%d",` - Line 23: Execute the statement as written. Code: `"%b %d, %Y",` - Line 24: Execute the statement as written. Code: `"%B %d, %Y",` - Line 25: Close the current block or container. Code: `)` - Line 26: Blank line for readability. Code: `` - Line 27: Blank line for readability. Code: `` - Line 28: Define the parse_date function. Code: `def parse_date(value):` - Line 29: Loop over items. Code: `for fmt in DATE_FORMATS:` - Line 30: Start a try block for error handling. Code: `try:` - Line 31: Return a value to the caller. Code: `return datetime.strptime(value, fmt).date()` - Line 32: Handle exceptions for the preceding try block. Code: `except ValueError:` - Line 33: Execute the statement as written. Code: `continue` - Line 34: Return a value to the caller. Code: `return None` - Line 35: Blank line for readability. Code: `` - Line 36: Blank line for readability. Code: `` - Line 37: Define the normalize_label function. Code: `def normalize_label(value):` - Line 38: Return a value to the caller. Code: `return " ".join(value.strip().split()).lower()` - Line 39: Blank line for readability. Code: `` - Line 40: Blank line for readability. Code: `` - Line 41: Define the format_expiration_label function. Code: `def format_expiration_label(timestamp):` - Line 42: Start a try block for error handling. Code: `try:` - Line 43: Return a value to the caller. Code: `return datetime.utcfromtimestamp(timestamp).strftime("%Y-%m-%d")` - Line 44: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 45: Return a value to the caller. Code: `return str(timestamp)` - Line 46: Blank line for readability. Code: `` - Line 47: Blank line for readability. Code: `` - Line 48: Define the extract_expiration_dates_from_html function. Code: `def extract_expiration_dates_from_html(html):` - Line 49: Conditional branch. Code: `if not html:` - Line 50: Return a value to the caller. Code: `return []` - Line 51: Blank line for readability. Code: `` - Line 52: Execute the statement as written. Code: `patterns = (` - Line 53: Execute the statement as written. Code: `r'\\"expirationDates\\":\[(.*?)\]',` - Line 54: Execute the statement as written. Code: `r'"expirationDates":\[(.*?)\]',` - Line 55: Close the current block or container. Code: `)` - Line 56: Execute the statement as written. Code: `match = None` - Line 57: Loop over items. Code: `for pattern in patterns:` - Line 58: Execute the statement as written. Code: `match = re.search(pattern, html, re.DOTALL)` - Line 59: Conditional branch. Code: `if match:` - Line 60: Execute the statement as written. Code: `break` - Line 61: Conditional branch. Code: `if not match:` - Line 62: Return a value to the caller. Code: `return []` - Line 63: Blank line for readability. Code: `` - Line 64: Execute the statement as written. Code: `raw = match.group(1)` - Line 65: Execute the statement as written. Code: `values = []` - Line 66: Loop over items. Code: `for part in raw.split(","):` - Line 67: Execute the statement as written. Code: `part = part.strip()` - Line 68: Conditional branch. Code: `if part.isdigit():` - Line 69: Start a try block for error handling. Code: `try:` - Line 70: Execute the statement as written. Code: `values.append(int(part))` - Line 71: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 72: Execute the statement as written. Code: `continue` - Line 73: Return a value to the caller. Code: `return values` - Line 74: Blank line for readability. Code: `` - Line 75: Blank line for readability. Code: `` - Line 76: Define the build_expiration_options function. Code: `def build_expiration_options(expiration_dates):` - Line 77: Execute the statement as written. Code: `options = []` - Line 78: Loop over items. Code: `for value in expiration_dates or []:` - Line 79: Start a try block for error handling. Code: `try:` - Line 80: Execute the statement as written. Code: `value_int = int(value)` - Line 81: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 82: Execute the statement as written. Code: `continue` - Line 83: Blank line for readability. Code: `` - Line 84: Execute the statement as written. Code: `label = format_expiration_label(value_int)` - Line 85: Start a try block for error handling. Code: `try:` - Line 86: Execute the statement as written. Code: `date_value = datetime.utcfromtimestamp(value_int).date()` - Line 87: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 88: Execute the statement as written. Code: `date_value = None` - Line 89: Blank line for readability. Code: `` - Line 90: Execute the statement as written. Code: `options.append({"value": value_int, "label": label, "date": date_value})` - Line 91: Return a value to the caller. Code: `return sorted(options, key=lambda x: x["value"])` - Line 92: Blank line for readability. Code: `` - Line 93: Blank line for readability. Code: `` - Line 94: Define the resolve_expiration function. Code: `def resolve_expiration(expiration, options):` - Line 95: Conditional branch. Code: `if not expiration:` - Line 96: Return a value to the caller. Code: `return None, None` - Line 97: Blank line for readability. Code: `` - Line 98: Execute the statement as written. Code: `raw = expiration.strip()` - Line 99: Conditional branch. Code: `if not raw:` - Line 100: Return a value to the caller. Code: `return None, None` - Line 101: Blank line for readability. Code: `` - Line 102: Conditional branch. Code: `if raw.isdigit():` - Line 103: Execute the statement as written. Code: `value = int(raw)` - Line 104: Conditional branch. Code: `if options:` - Line 105: Loop over items. Code: `for opt in options:` - Line 106: Conditional branch. Code: `if opt.get("value") == value:` - Line 107: Return a value to the caller. Code: `return value, opt.get("label")` - Line 108: Return a value to the caller. Code: `return None, None` - Line 109: Return a value to the caller. Code: `return value, format_expiration_label(value)` - Line 110: Blank line for readability. Code: `` - Line 111: Execute the statement as written. Code: `requested_date = parse_date(raw)` - Line 112: Conditional branch. Code: `if requested_date:` - Line 113: Loop over items. Code: `for opt in options:` - Line 114: Conditional branch. Code: `if opt.get("date") == requested_date:` - Line 115: Return a value to the caller. Code: `return opt.get("value"), opt.get("label")` - Line 116: Return a value to the caller. Code: `return None, None` - Line 117: Blank line for readability. Code: `` - Line 118: Execute the statement as written. Code: `normalized = normalize_label(raw)` - Line 119: Loop over items. Code: `for opt in options:` - Line 120: Conditional branch. Code: `if normalize_label(opt.get("label", "")) == normalized:` - Line 121: Return a value to the caller. Code: `return opt.get("value"), opt.get("label")` - Line 122: Blank line for readability. Code: `` - Line 123: Return a value to the caller. Code: `return None, None` - Line 124: Blank line for readability. Code: `` - Line 125: Blank line for readability. Code: `` - Line 126: Define the wait_for_tables function. Code: `def wait_for_tables(page):` - Line 127: Start a try block for error handling. Code: `try:` - Line 128: Interact with the Playwright page. Code: `page.wait_for_selector(` - Line 129: Execute the statement as written. Code: `"section[data-testid='options-list-table'] table",` - Line 130: Execute the statement as written. Code: `timeout=30000,` - Line 131: Close the current block or container. Code: `)` - Line 132: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 133: Interact with the Playwright page. Code: `page.wait_for_selector("table", timeout=30000)` - Line 134: Blank line for readability. Code: `` - Line 135: Loop over items. Code: `for _ in range(30): # 30 * 1s = 30 seconds` - Line 136: Collect option tables from the page. Code: `tables = page.query_selector_all(` - Line 137: Execute the statement as written. Code: `"section[data-testid='options-list-table'] table"` - Line 138: Close the current block or container. Code: `)` - Line 139: Conditional branch. Code: `if len(tables) >= 2:` - Line 140: Return a value to the caller. Code: `return tables` - Line 141: Collect option tables from the page. Code: `tables = page.query_selector_all("table")` - Line 142: Conditional branch. Code: `if len(tables) >= 2:` - Line 143: Return a value to the caller. Code: `return tables` - Line 144: Execute the statement as written. Code: `time.sleep(1)` - Line 145: Return a value to the caller. Code: `return []` - Line 146: Blank line for readability. Code: `` - Line 147: Blank line for readability. Code: `` - Line 148: Define the scrape_yahoo_options function. Code: `def scrape_yahoo_options(symbol, expiration=None):` - Line 149: URL-encode the stock symbol. Code: `encoded = urllib.parse.quote(symbol, safe="")` - Line 150: Build the base Yahoo Finance options URL. Code: `base_url = f"https://finance.yahoo.com/quote/{encoded}/options/"` - Line 151: Normalize the expiration input string. Code: `requested_expiration = expiration.strip() if expiration else None` - Line 152: Conditional branch. Code: `if not requested_expiration:` - Line 153: Normalize the expiration input string. Code: `requested_expiration = None` - Line 154: Set the URL to load. Code: `url = base_url` - Line 155: Blank line for readability. Code: `` - Line 156: Emit or configure a log message. Code: `app.logger.info(` - Line 157: Execute the statement as written. Code: `"Starting scrape for symbol=%s expiration=%s url=%s",` - Line 158: Execute the statement as written. Code: `symbol,` - Line 159: Execute the statement as written. Code: `requested_expiration,` - Line 160: Execute the statement as written. Code: `base_url,` - Line 161: Close the current block or container. Code: `)` - Line 162: Blank line for readability. Code: `` - Line 163: Reserve storage for options table HTML. Code: `calls_html = None` - Line 164: Reserve storage for options table HTML. Code: `puts_html = None` - Line 165: Initialize or assign the current price. Code: `price = None` - Line 166: Track the resolved expiration metadata. Code: `selected_expiration_value = None` - Line 167: Track the resolved expiration metadata. Code: `selected_expiration_label = None` - Line 168: Prepare or update the list of available expirations. Code: `expiration_options = []` - Line 169: Track the resolved expiration epoch timestamp. Code: `target_date = None` - Line 170: Track whether a base-page lookup is needed. Code: `fallback_to_base = False` - Line 171: Blank line for readability. Code: `` - Line 172: Enter a context manager block. Code: `with sync_playwright() as p:` - Line 173: Launch a Playwright browser instance. Code: `browser = p.chromium.launch(headless=True)` - Line 174: Create a new Playwright page. Code: `page = browser.new_page()` - Line 175: Interact with the Playwright page. Code: `page.set_extra_http_headers(` - Line 176: Execute the statement as written. Code: `{` - Line 177: Execute the statement as written. Code: `"User-Agent": (` - Line 178: Execute the statement as written. Code: `"Mozilla/5.0 (Windows NT 10.0; Win64; x64) "` - Line 179: Execute the statement as written. Code: `"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120 Safari/537.36"` - Line 180: Close the current block or container. Code: `)` - Line 181: Close the current block or container. Code: `}` - Line 182: Close the current block or container. Code: `)` - Line 183: Interact with the Playwright page. Code: `page.set_default_timeout(60000)` - Line 184: Blank line for readability. Code: `` - Line 185: Start a try block for error handling. Code: `try:` - Line 186: Conditional branch. Code: `if requested_expiration:` - Line 187: Conditional branch. Code: `if requested_expiration.isdigit():` - Line 188: Track the resolved expiration epoch timestamp. Code: `target_date = int(requested_expiration)` - Line 189: Track the resolved expiration metadata. Code: `selected_expiration_value = target_date` - Line 190: Track the resolved expiration metadata. Code: `selected_expiration_label = format_expiration_label(target_date)` - Line 191: Fallback branch. Code: `else:` - Line 192: Execute the statement as written. Code: `parsed_date = parse_date(requested_expiration)` - Line 193: Conditional branch. Code: `if parsed_date:` - Line 194: Track the resolved expiration epoch timestamp. Code: `target_date = int(` - Line 195: Execute the statement as written. Code: `datetime(` - Line 196: Execute the statement as written. Code: `parsed_date.year,` - Line 197: Execute the statement as written. Code: `parsed_date.month,` - Line 198: Execute the statement as written. Code: `parsed_date.day,` - Line 199: Execute the statement as written. Code: `tzinfo=timezone.utc,` - Line 200: Execute the statement as written. Code: `).timestamp()` - Line 201: Close the current block or container. Code: `)` - Line 202: Track the resolved expiration metadata. Code: `selected_expiration_value = target_date` - Line 203: Track the resolved expiration metadata. Code: `selected_expiration_label = format_expiration_label(target_date)` - Line 204: Fallback branch. Code: `else:` - Line 205: Track whether a base-page lookup is needed. Code: `fallback_to_base = True` - Line 206: Blank line for readability. Code: `` - Line 207: Conditional branch. Code: `if target_date:` - Line 208: Set the URL to load. Code: `url = f"{base_url}?date={target_date}"` - Line 209: Blank line for readability. Code: `` - Line 210: Navigate the Playwright page to the target URL. Code: `page.goto(url, wait_until="domcontentloaded", timeout=60000)` - Line 211: Emit or configure a log message. Code: `app.logger.info("Page loaded (domcontentloaded) for %s", symbol)` - Line 212: Blank line for readability. Code: `` - Line 213: Capture the page HTML content. Code: `html = page.content()` - Line 214: Extract expiration date timestamps from the HTML. Code: `expiration_dates = extract_expiration_dates_from_html(html)` - Line 215: Prepare or update the list of available expirations. Code: `expiration_options = build_expiration_options(expiration_dates)` - Line 216: Blank line for readability. Code: `` - Line 217: Conditional branch. Code: `if fallback_to_base:` - Line 218: Execute the statement as written. Code: `resolved_value, resolved_label = resolve_expiration(` - Line 219: Execute the statement as written. Code: `requested_expiration, expiration_options` - Line 220: Close the current block or container. Code: `)` - Line 221: Conditional branch. Code: `if resolved_value is None:` - Line 222: Return a value to the caller. Code: `return {` - Line 223: Execute the statement as written. Code: `"error": "Requested expiration not available",` - Line 224: Execute the statement as written. Code: `"stock": symbol,` - Line 225: Execute the statement as written. Code: `"requested_expiration": requested_expiration,` - Line 226: Execute the statement as written. Code: `"available_expirations": [` - Line 227: Execute the statement as written. Code: `{"label": opt.get("label"), "value": opt.get("value")}` - Line 228: Loop over items. Code: `for opt in expiration_options` - Line 229: Close the current block or container. Code: `],` - Line 230: Close the current block or container. Code: `}` - Line 231: Blank line for readability. Code: `` - Line 232: Track the resolved expiration epoch timestamp. Code: `target_date = resolved_value` - Line 233: Track the resolved expiration metadata. Code: `selected_expiration_value = resolved_value` - Line 234: Track the resolved expiration metadata. Code: `selected_expiration_label = resolved_label or format_expiration_label(` - Line 235: Execute the statement as written. Code: `resolved_value` - Line 236: Close the current block or container. Code: `)` - Line 237: Set the URL to load. Code: `url = f"{base_url}?date={resolved_value}"` - Line 238: Navigate the Playwright page to the target URL. Code: `page.goto(url, wait_until="domcontentloaded", timeout=60000)` - Line 239: Emit or configure a log message. Code: `app.logger.info("Page loaded (domcontentloaded) for %s", symbol)` - Line 240: Blank line for readability. Code: `` - Line 241: Capture the page HTML content. Code: `html = page.content()` - Line 242: Extract expiration date timestamps from the HTML. Code: `expiration_dates = extract_expiration_dates_from_html(html)` - Line 243: Prepare or update the list of available expirations. Code: `expiration_options = build_expiration_options(expiration_dates)` - Line 244: Blank line for readability. Code: `` - Line 245: Conditional branch. Code: `if target_date and expiration_options:` - Line 246: Execute the statement as written. Code: `matched = None` - Line 247: Loop over items. Code: `for opt in expiration_options:` - Line 248: Conditional branch. Code: `if opt.get("value") == target_date:` - Line 249: Execute the statement as written. Code: `matched = opt` - Line 250: Execute the statement as written. Code: `break` - Line 251: Conditional branch. Code: `if not matched:` - Line 252: Return a value to the caller. Code: `return {` - Line 253: Execute the statement as written. Code: `"error": "Requested expiration not available",` - Line 254: Execute the statement as written. Code: `"stock": symbol,` - Line 255: Execute the statement as written. Code: `"requested_expiration": requested_expiration,` - Line 256: Execute the statement as written. Code: `"available_expirations": [` - Line 257: Execute the statement as written. Code: `{"label": opt.get("label"), "value": opt.get("value")}` - Line 258: Loop over items. Code: `for opt in expiration_options` - Line 259: Close the current block or container. Code: `],` - Line 260: Close the current block or container. Code: `}` - Line 261: Track the resolved expiration metadata. Code: `selected_expiration_label = matched.get("label")` - Line 262: Alternative conditional branch. Code: `elif expiration_options and not target_date:` - Line 263: Track the resolved expiration metadata. Code: `selected_expiration_value = expiration_options[0].get("value")` - Line 264: Track the resolved expiration metadata. Code: `selected_expiration_label = expiration_options[0].get("label")` - Line 265: Blank line for readability. Code: `` - Line 266: Emit or configure a log message. Code: `app.logger.info("Waiting for options tables...")` - Line 267: Blank line for readability. Code: `` - Line 268: Collect option tables from the page. Code: `tables = wait_for_tables(page)` - Line 269: Conditional branch. Code: `if len(tables) < 2:` - Line 270: Emit or configure a log message. Code: `app.logger.error(` - Line 271: Execute the statement as written. Code: `"Only %d tables found; expected 2. HTML may have changed.",` - Line 272: Execute the statement as written. Code: `len(tables),` - Line 273: Close the current block or container. Code: `)` - Line 274: Return a value to the caller. Code: `return {"error": "Could not locate options tables", "stock": symbol}` - Line 275: Blank line for readability. Code: `` - Line 276: Emit or configure a log message. Code: `app.logger.info("Found %d tables. Extracting Calls & Puts.", len(tables))` - Line 277: Blank line for readability. Code: `` - Line 278: Reserve storage for options table HTML. Code: `calls_html = tables[0].evaluate("el => el.outerHTML")` - Line 279: Reserve storage for options table HTML. Code: `puts_html = tables[1].evaluate("el => el.outerHTML")` - Line 280: Blank line for readability. Code: `` - Line 281: Comment describing the next block. Code: `# --- Extract current price ---` - Line 282: Start a try block for error handling. Code: `try:` - Line 283: Comment describing the next block. Code: `# Primary selector` - Line 284: Read the current price text from the page. Code: `price_text = page.locator(` - Line 285: Execute the statement as written. Code: `"fin-streamer[data-field='regularMarketPrice']"` - Line 286: Execute the statement as written. Code: `).inner_text()` - Line 287: Initialize or assign the current price. Code: `price = float(price_text.replace(",", ""))` - Line 288: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 289: Start a try block for error handling. Code: `try:` - Line 290: Comment describing the next block. Code: `# Fallback` - Line 291: Read the current price text from the page. Code: `price_text = page.locator("span[data-testid='qsp-price']").inner_text()` - Line 292: Initialize or assign the current price. Code: `price = float(price_text.replace(",", ""))` - Line 293: Handle exceptions for the preceding try block. Code: `except Exception as e:` - Line 294: Emit or configure a log message. Code: `app.logger.warning("Failed to extract price for %s: %s", symbol, e)` - Line 295: Blank line for readability. Code: `` - Line 296: Emit or configure a log message. Code: `app.logger.info("Current price for %s = %s", symbol, price)` - Line 297: Execute the statement as written. Code: `finally:` - Line 298: Execute the statement as written. Code: `browser.close()` - Line 299: Blank line for readability. Code: `` - Line 300: Comment describing the next block. Code: `# ----------------------------------------------------------------------` - Line 301: Comment describing the next block. Code: `# Parsing Table HTML` - Line 302: Comment describing the next block. Code: `# ----------------------------------------------------------------------` - Line 303: Define the parse_table function. Code: `def parse_table(table_html, side):` - Line 304: Conditional branch. Code: `if not table_html:` - Line 305: Emit or configure a log message. Code: `app.logger.warning("No %s table HTML for %s", side, symbol)` - Line 306: Return a value to the caller. Code: `return []` - Line 307: Blank line for readability. Code: `` - Line 308: Execute the statement as written. Code: `soup = BeautifulSoup(table_html, "html.parser")` - Line 309: Blank line for readability. Code: `` - Line 310: Extract header labels from the table. Code: `headers = [th.get_text(strip=True) for th in soup.select("thead th")]` - Line 311: Collect table rows for parsing. Code: `rows = soup.select("tbody tr")` - Line 312: Blank line for readability. Code: `` - Line 313: Initialize the parsed rows list. Code: `parsed = []` - Line 314: Loop over items. Code: `for r in rows:` - Line 315: Collect table cells for the current row. Code: `tds = r.find_all("td")` - Line 316: Conditional branch. Code: `if len(tds) != len(headers):` - Line 317: Execute the statement as written. Code: `continue` - Line 318: Blank line for readability. Code: `` - Line 319: Initialize a row dictionary. Code: `item = {}` - Line 320: Loop over items. Code: `for i, c in enumerate(tds):` - Line 321: Read the header name for the current column. Code: `key = headers[i]` - Line 322: Read or convert the cell value. Code: `val = c.get_text(" ", strip=True)` - Line 323: Blank line for readability. Code: `` - Line 324: Comment describing the next block. Code: `# Convert numeric fields` - Line 325: Conditional branch. Code: `if key in ["Strike", "Last Price", "Bid", "Ask", "Change"]:` - Line 326: Start a try block for error handling. Code: `try:` - Line 327: Read or convert the cell value. Code: `val = float(val.replace(",", ""))` - Line 328: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 329: Read or convert the cell value. Code: `val = None` - Line 330: Alternative conditional branch. Code: `elif key in ["Volume", "Open Interest"]:` - Line 331: Start a try block for error handling. Code: `try:` - Line 332: Read or convert the cell value. Code: `val = int(val.replace(",", ""))` - Line 333: Handle exceptions for the preceding try block. Code: `except Exception:` - Line 334: Read or convert the cell value. Code: `val = None` - Line 335: Alternative conditional branch. Code: `elif val in ["-", ""]:` - Line 336: Read or convert the cell value. Code: `val = None` - Line 337: Blank line for readability. Code: `` - Line 338: Execute the statement as written. Code: `item[key] = val` - Line 339: Blank line for readability. Code: `` - Line 340: Execute the statement as written. Code: `parsed.append(item)` - Line 341: Blank line for readability. Code: `` - Line 342: Emit or configure a log message. Code: `app.logger.info("Parsed %d %s rows", len(parsed), side)` - Line 343: Return a value to the caller. Code: `return parsed` - Line 344: Blank line for readability. Code: `` - Line 345: Parse the full calls and puts tables. Code: `calls_full = parse_table(calls_html, "calls")` - Line 346: Parse the full calls and puts tables. Code: `puts_full = parse_table(puts_html, "puts")` - Line 347: Blank line for readability. Code: `` - Line 348: Comment describing the next block. Code: `# ----------------------------------------------------------------------` - Line 349: Comment describing the next block. Code: `# Pruning logic` - Line 350: Comment describing the next block. Code: `# ----------------------------------------------------------------------` - Line 351: Define the prune_nearest function. Code: `def prune_nearest(options, price_value, limit=26, side=""):` - Line 352: Conditional branch. Code: `if price_value is None:` - Line 353: Return a value to the caller. Code: `return options, 0` - Line 354: Blank line for readability. Code: `` - Line 355: Filter options to numeric strike entries. Code: `numeric = [o for o in options if isinstance(o.get("Strike"), (int, float))]` - Line 356: Blank line for readability. Code: `` - Line 357: Conditional branch. Code: `if len(numeric) <= limit:` - Line 358: Return a value to the caller. Code: `return numeric, 0` - Line 359: Blank line for readability. Code: `` - Line 360: Sort options by distance to current price. Code: `sorted_opts = sorted(numeric, key=lambda x: abs(x["Strike"] - price_value))` - Line 361: Keep the closest strike entries. Code: `pruned = sorted_opts[:limit]` - Line 362: Compute how many rows were pruned. Code: `pruned_count = len(options) - len(pruned)` - Line 363: Return a value to the caller. Code: `return pruned, pruned_count` - Line 364: Blank line for readability. Code: `` - Line 365: Apply pruning to calls. Code: `calls, pruned_calls = prune_nearest(calls_full, price, side="calls")` - Line 366: Apply pruning to puts. Code: `puts, pruned_puts = prune_nearest(puts_full, price, side="puts")` - Line 367: Blank line for readability. Code: `` - Line 368: Define the strike_range function. Code: `def strike_range(opts):` - Line 369: Collect strike prices from the option list. Code: `strikes = [o["Strike"] for o in opts if isinstance(o.get("Strike"), (int, float))]` - Line 370: Return a value to the caller. Code: `return [min(strikes), max(strikes)] if strikes else [None, None]` - Line 371: Blank line for readability. Code: `` - Line 372: Return a value to the caller. Code: `return {` - Line 373: Execute the statement as written. Code: `"stock": symbol,` - Line 374: Execute the statement as written. Code: `"url": url,` - Line 375: Execute the statement as written. Code: `"requested_expiration": requested_expiration,` - Line 376: Execute the statement as written. Code: `"selected_expiration": {` - Line 377: Execute the statement as written. Code: `"value": selected_expiration_value,` - Line 378: Execute the statement as written. Code: `"label": selected_expiration_label,` - Line 379: Close the current block or container. Code: `},` - Line 380: Execute the statement as written. Code: `"current_price": price,` - Line 381: Execute the statement as written. Code: `"calls": calls,` - Line 382: Execute the statement as written. Code: `"puts": puts,` - Line 383: Execute the statement as written. Code: `"calls_strike_range": strike_range(calls),` - Line 384: Execute the statement as written. Code: `"puts_strike_range": strike_range(puts),` - Line 385: Execute the statement as written. Code: `"total_calls": len(calls),` - Line 386: Execute the statement as written. Code: `"total_puts": len(puts),` - Line 387: Execute the statement as written. Code: `"pruned_calls_count": pruned_calls,` - Line 388: Execute the statement as written. Code: `"pruned_puts_count": pruned_puts,` - Line 389: Close the current block or container. Code: `}` - Line 390: Blank line for readability. Code: `` - Line 391: Blank line for readability. Code: `` - Line 392: Attach the route decorator to the handler. Code: `@app.route("/scrape_sync")` - Line 393: Define the scrape_sync function. Code: `def scrape_sync():` - Line 394: Read the stock symbol parameter. Code: `symbol = request.args.get("stock", "MSFT")` - Line 395: Read the expiration parameters from the request. Code: `expiration = (` - Line 396: Execute the statement as written. Code: `request.args.get("expiration")` - Line 397: Execute the statement as written. Code: `or request.args.get("expiry")` - Line 398: Execute the statement as written. Code: `or request.args.get("date")` - Line 399: Close the current block or container. Code: `)` - Line 400: Emit or configure a log message. Code: `app.logger.info(` - Line 401: Execute the statement as written. Code: `"Received /scrape_sync request for symbol=%s expiration=%s",` - Line 402: Execute the statement as written. Code: `symbol,` - Line 403: Execute the statement as written. Code: `expiration,` - Line 404: Close the current block or container. Code: `)` - Line 405: Return a value to the caller. Code: `return jsonify(scrape_yahoo_options(symbol, expiration))` - Line 406: Blank line for readability. Code: `` - Line 407: Blank line for readability. Code: `` - Line 408: Conditional branch. Code: `if __name__ == "__main__":` - Line 409: Run the Flask development server. Code: `app.run(host="0.0.0.0", port=9777)`