用正则判断年份的4位数字

bnu_wos/20250108_func.py

@@ -13,6 +13,8 @@
 # 2.2.发文信息的结果与引文信息的结果进行匹配
 
 import os
+import re
+
 import pandas as pd
 from pymongo import MongoClient
 
@@ -90,6 +92,9 @@ def ref_str2dic(text):
             var1.append(ref_copy[:idx_t])
             ref_copy = ref_copy[idx_t + INFO_SPLIT_SYMBOL_LENGTH:]
         au, py, so = var1
+        # 年份要判断，要满足4位数字
+        if not re.match(r'\d{4}', py):
+            py = None
         doi_idx = ref.find(DOI_SPLIT_SYMBOL)
         model = dict(au=au, py=py, so=so)
         if doi_idx != -1: