新增投组校验，防止投组全为ft的情况

portfolios/checker.py

@@ -35,11 +35,10 @@ class DefaultPortfoliosChecker(PortfoliosChecker):
                 if len(keys) > 0:
                     # 选取非同公司的、风险等级小于等于原基金的 基金
                     min_risk = min(fund['risk'] for fund in funds if str(fund['id']) in keys)
-                    ids = []
-                    while len(ids) == 0:
                     ids = [fund['id'] for fund in funds if fund['companyType'] != list(companies)[0] and
                            fund['risk'] <= min_risk]
-                        min_risk += 1
+                    if len(ids) == 0:
+                        continue
                     best = self.find_highest_score(ids, day)
                     # 若刚好有一个匹配，直接替换
                     if len(keys) == 1: