change pgyer rss description

rsshub/spiders/pgyer/app.py

@@ -4,6 +4,16 @@ from rsshub.utils import fetch
 
 domain = 'https://www.pgyer.com'
 
+def parse(post):
+    item = {}
+    item['title'] = post.xpath('//meta[@property="og:description"]').attrib['content']
+    item['description'] = post.css('div.update-description').extract_first() 
+    item['description']  = re.sub(r'<[^>]*>', '', item['description'] )\
+                           .split('备注信息:')[1].split('执行人')[0].strip() 
+    link =  post.css('img.qrcode').attrib['src'].split('app/qrcode/')
+    item['link'] = link[0] + link[1]
+    return item
+
 def ctx(category=''):
     url = f"{domain}/{category}"
     tree = fetch(url,headers=DEFAULT_HEADERS)
@@ -19,13 +29,3 @@ def ctx(category=''):
         'items': list(map(parse, posts)) 
     }
     
-def parse(post):
-    item = {}
-    item['title'] = post.xpath('//meta[@property="og:description"]').attrib['content']
-    item['description'] =   item['title'] + '；' \
-                            + post.css('ul.breadcrumb > li::text').getall()[1] + '；' \
-                            + post.css('ul.breadcrumb > li::text').getall()[2]
-    item['description'] = re.sub(r'\s|\n', '', item['description'])
-    link =  post.css('img.qrcode').attrib['src'].split('app/qrcode/')
-    item['link'] = link[0] + link[1]
-    return item