BOM：R2 物料清单与淘宝 / 立创比价（表格 + 抓价脚本与数据）

Co-Authored-By: Claude Opus 5.5 <[email protected]>

BOM/_src/cost_pick.py

@@ -0,0 +1,39 @@
+import json, re, math, collections
+exec(open('build.py', encoding='utf-8').read().split('# ---------- Excel ----------')[0])
+
+# 店铺覆盖度：一家店能供的料越多越优先（省运费）
+cover = collections.Counter()
+REL = {}
+for r in L:
+    sid = r['sid'] or ''
+    if not sid.startswith('C'): continue
+    items = [i for i in TB.get(sid, {}).get('items', []) if i['price']]
+    rel = [i for i in items if relevant(sid, r, i)]
+    for i in rel:
+        i['p'] = float(i['price']); i['s'] = sales_n(i['sales'])
+    REL[sid] = (r, rel)
+    for s in {i['shop'] for i in rel}:
+        cover[s] += 1
+
+def cat2(r):
+    m = r['mid'] or ''
+    if re.match(r'0402WGF|RHC|FRC|HoGT|NCP18|CL\d|GRM|0402CG|T491|470uF|6.3TPV', m): return 'passive'
+    return 'other'
+
+plan = []
+for sid, (r, rel) in REL.items():
+    lp = lcsc_price(sid, r['total'])[0]
+    cands = []
+    for i in rel:
+        bad = cat2(r) == 'other' and lp and i['p'] < 0.3 * lp and lp > 1.0
+        score = 3 * math.log1p(cover[i['shop']]) + math.log1p(i['s']) - (4 if i.get('series') else 0) - (8 if bad else 0) - (3 if i['s'] == 0 else 0)
+        cands.append((score, i))
+    cands.sort(key=lambda x: -x[0])
+    plan.append({'sid': sid, 'mid': r['mid'], 'desc': r['desc'], 'need': r['total'], 'lcsc': lp,
+                 'cands': [dict(id=i['id'], tmall=i['tmall'], shop=i['shop'], p=i['p'], sales=i['sales'], title=i['title'], score=round(s, 2)) for s, i in cands[:3]]})
+json.dump(plan, open('cost_plan.json', 'w', encoding='utf-8'), ensure_ascii=False, indent=1)
+shops = collections.Counter(p['cands'][0]['shop'] for p in plan if p['cands'])
+print(len(plan), 'shops', len(shops)); print(shops.most_common(15))
+for p in plan:
+    c = p['cands'][0] if p['cands'] else None
+    print(p['mid'][:22].ljust(22), p['need'], p['lcsc'], '|', c and (c['p'], c['shop'][:10], c['title'][:40]))