请求
网络中包含大量LLMs无法访问的信息。为了让LLMs能够轻松地与这些信息进行交互，我们提供了一个围绕Python Requests模块的包装器，它接收一个URL并从该URL获取数据。
from langchain.agents import load_tools
requests_tools = load_tools(["requests_all"])
requests_tools
[RequestsGetTool(name='requests_get', description='一个通往互联网的门户。当您需要从网站获取特定内容时，请使用此工具。输入应为URL（例如https://www.google.com）。输出将是GET请求的文本响应。', args_schema=None, return_direct=False, verbose=False, callbacks=None, callback_manager=None, requests_wrapper=TextRequestsWrapper(headers=None, aiosession=None)),
RequestsPostTool(name='requests_post', description='当您想要向网站进行POST请求时，请使用此工具。\n 输入应为带有两个键的json字符串："url"和"data"。\n "url"的值应为字符串，"data"的值应为您想要POST到URL的键值对字典。\n 请务必始终在json字符串中使用双引号括起字符串\n 输出将是POST请求的文本响应。\n ', args_schema=None, return_direct=False, verbose=False, callbacks=None, callback_manager=None, requests_wrapper=TextRequestsWrapper(headers=None, aiosession=None)),
RequestsPatchTool(name='requests_patch', description='当您想要向网站进行PATCH请求时，请使用此工具。\n 输入应为带有两个键的json字符串："url"和"data"。\n "url"的值应为字符串，"data"的值应为您想要PATCH到URL的键值对字典。\n 请务必始终在json字符串中使用双引号括起字符串\n 输出将是PATCH请求的文本响应。\n ', args_schema=None, return_direct=False, verbose=False, callbacks=None, callback_manager=None, requests_wrapper=TextRequestsWrapper(headers=None, aiosession=None)),
RequestsPutTool(name='requests_put', description='当您想要向网站进行PUT请求时，请使用此工具。\n 输入应为带有两个键的json字符串："url"和"data"。\n "url"的值应为字符串，"data"的值应为您想要PUT到URL的键值对字典。\n 请务必始终在json字符串中使用双引号括起字符串。\n 输出将是PUT请求的文本响应。\n ', args_schema=None, return_direct=False, verbose=False, callbacks=None, callback_manager=None, requests_wrapper=TextRequestsWrapper(headers=None, aiosession=None)),
RequestsDeleteTool(name='requests_delete', description='一个通往互联网的门户。当您需要向URL发出DELETE请求时，请使用此工具。输入应为特定URL，输出将是DELETE请求的文本响应。', args_schema=None, return_direct=False, verbose=False, callbacks=None, callback_manager=None, requests_wrapper=TextRequestsWrapper(headers=None, aiosession=None)]
工具内部
每个请求工具都包含一个requests包装器。您可以直接使用这些包装器。
# 每个工具都包装一个requests包装器
requests_tools[0].requests_wrapper
TextRequestsWrapper(headers=None, aiosession=None)
from langchain_community.utilities import TextRequestsWrapper
requests = TextRequestsWrapper()
requests.get("https://www.google.com")
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```python
如果您需要将输出从 JSON 解码，可以使用 ``JsonRequestsWrapper``。
```python
from langchain_community.utilities.requests import JsonRequestsWrapper
requests = JsonRequestsWrapper()
rval = requests.get("https://api.agify.io/?name=jackson")
print(
f"""
Type - {type(rval)}
Content:
{rval}
"""
)
Type - <class 'dict'>
Content:
{'count': 5707, 'name': 'jackson', 'age': 38}