Updating tool.py

Adding the first tools:
- Some basic algebra tools
- Some basic internet / databases (wikipedia, pubmed, arxiv) searching tools

tool.py

@@ -0,0 +1,108 @@
+from langchain_core.tools import tool
+from langchain_community.utilities.duckduckgo_search import DuckDuckGoSearchAPIWrapper
+from langchain_community.document_loaders.wikipedia import WikipediaLoader
+from langchain_community.document_loaders.arxiv import ArxivLoader
+from langchain_community.document_loaders.pubmed import PubMedLoader
+
+
+## Simple algebra tools
+@tool
+def add(a: float, b: float) -> float: 
+    """Add two numbers.
+      
+      Args:
+          a: first float
+          b: second float
+    """
+    return a + b
+
+@tool
+def substract(a: float, b: float) -> float: 
+    """Substract two numbers.
+      
+      Args:
+          a: first float
+          b: second float
+    """
+    return a - b
+
+@tool
+def multiply(a: float, b: float) -> float: 
+    """Multiply two numbers.
+      
+      Args:
+          a: first float
+          b: second float
+    """
+    return a * b
+
+@tool
+def divide(a: float, b: float) -> float: 
+    """Divide two numbers.
+      
+      Args:
+          a: first float
+          b: second float
+    """
+    if b == 0:
+        raise ValueError("Cannot divide any number by zero.")
+    return a / b
+
+# Maybe add algebra tools???
+
+## Search Tools
+def DuckDuckGoSearchTool(query: str) -> dict:
+    """Search DuckDuckGo for a query and return maximum 3 results.
+    
+    Args:
+        query: The search query.
+    """
+    results = DuckDuckGoSearchAPIWrapper().results(query = query, max_results=3)
+    formatted_search_docs = "\n\n---\n\n".join(
+        [
+            f'<Document source="{res["link"]}" title="{res["title"]}">\n{res["snippet"]}\n</Document>'
+            for res in results
+        ])
+    return {"web_results": formatted_search_docs}
+
+@tool
+def WikipediaSearchTool(query: str) -> str:
+    """Search Wikipedia for a query and return maximum 2 results.
+    
+    Args:
+        query: The search query."""
+    search_docs = WikipediaLoader(query=query, load_max_docs=2).load()
+    formatted_search_docs = "\n\n---\n\n".join(
+        [
+            f'<Document source="{doc.metadata["source"]}" page="{doc.metadata.get("page", "")}"/>\n{doc.page_content}\n</Document>'
+            for doc in search_docs
+        ])
+    return {"wiki_results": formatted_search_docs}
+
+@tool
+def ArxivSearchTool(query: str) -> str:
+    """Search Arxiv for a query and return maximum 3 result.
+    
+    Args:
+        query: The search query."""
+    search_docs = ArxivLoader(query=query, load_max_docs=3).load()
+    formatted_search_docs = "\n\n---\n\n".join(
+        [
+            f'<Document source="{doc.metadata["source"]}" page="{doc.metadata.get("page", "")}"/>\n{doc.page_content[:1000]}\n</Document>'
+            for doc in search_docs
+        ])
+    return {"arvix_results": formatted_search_docs}
+
+@tool
+def PubmedSearchTool(query: str) -> str:
+    """Search Arxiv for a query and return maximum 3 result.
+    
+    Args:
+        query: The search query."""
+    search_docs = PubMedLoader(query=query, load_max_docs=3).load()
+    formatted_search_docs = "\n\n---\n\n".join(
+        [
+            f'<Document source="{doc.metadata["uid"]}" title="{doc.metadata["Title"]}"/>\n{doc.page_content[:1000]}\n</Document>'
+            for doc in search_docs
+        ])
+    return {"pubmed_results": formatted_search_docs}