添加RSS_loader.py用作从RSS订阅知识库

loader/RSS_loader.py

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+from langchain.docstore.document import Document
+import feedparser
+import html2text
+import ssl
+import time
+
+
+class RSS_Url_loader:
+    def __init__(self, urls=None,interval=60):
+        '''可用参数urls数组或者是字符串形式的url列表'''
+        self.urls = []
+        self.interval = interval
+        if urls is not None:
+            try:
+                if isinstance(urls, str):
+                    urls = [urls]
+                elif isinstance(urls, list):
+                    pass
+                else:
+                    raise TypeError('urls must be a list or a string.')
+                self.urls = urls
+            except:
+                Warning('urls must be a list or a string.')
+    
+    #定时代码还要考虑是不是引入其他类，暂时先不对外开放
+    def scheduled_execution(self):
+        while True:
+            docs = self.load()
+            return docs
+            time.sleep(self.interval)
+
+    def load(self):
+        if hasattr(ssl, '_create_unverified_context'):
+            ssl._create_default_https_context = ssl._create_unverified_context
+        documents = []
+        for url in self.urls:
+            parsed = feedparser.parse(url)
+            for entry in parsed.entries:
+                if "content" in entry:
+                    data = entry.content[0].value
+                else:
+                    data = entry.description or entry.summary
+                data = html2text.html2text(data)
+                metadata = {"title": entry.title, "link": entry.link}
+                documents.append(Document(page_content=data, metadata=metadata))
+        return documents
+
+if __name__=="__main__":
+    #需要在配置文件中加入urls的配置，或者是在用户界面上加入urls的配置
+    urls = ["https://www.zhihu.com/rss", "https://www.36kr.com/feed"]
+    loader = RSS_Url_loader(urls)
+    docs = loader.load()
+    for doc in docs:
+        print(doc)