Add .gitignore with repodir and workdir

.gitignore

@@ -2,3 +2,5 @@ __pycache__/
 *.pyc
 .ipynb_checkpoints
 */.ipynb_checkpoints/*
+repodir/
+workdir/

huixiangdou/service/findarticles.py

@@ -34,17 +34,17 @@ class ArticleRetrieval:
         return pmc_ids
 
     # 解析XML文件
-def _get_all_text(self, element):
-    """递归获取XML元素及其所有子元素的文本内容。确保element不为None."""
-    if element is None:
-        return ""
-    
-    text = element.text or ""
-    for child in element:
-        text += self._get_all_text(child)
-        if child is not None and child.tail:
-            text += child.tail
-    return text
+    def _get_all_text(self, element):
+        """递归获取XML元素及其所有子元素的文本内容。确保element不为None."""
+        if element is None:
+            return ""
+        
+        text = element.text or ""
+        for child in element:
+            text += self._get_all_text(child)
+            if child is not None and child.tail:
+                text += child.tail
+        return text
 
     ## 清洗XML文件
     def _clean_xml(self,txt):