forked from Archives/langchain
82baecc892
This PR adds * `ZeroShotAgent.as_sql_agent`, which returns an agent for interacting with a sql database. This builds off of `SQLDatabaseChain`. The main advantages are 1) answering general questions about the db, 2) access to a tool for double checking queries, and 3) recovering from errors * `ZeroShotAgent.as_json_agent` which returns an agent for interacting with json blobs. * Several examples in notebooks --------- Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>
27 lines
816 B
Python
27 lines
816 B
Python
"""Mock Python REPL."""
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import sys
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from io import StringIO
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from typing import Dict, Optional
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from pydantic import BaseModel, Field
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class PythonREPL(BaseModel):
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"""Simulates a standalone Python REPL."""
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globals: Optional[Dict] = Field(default_factory=dict, alias="_globals")
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locals: Optional[Dict] = Field(default_factory=dict, alias="_locals")
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def run(self, command: str) -> str:
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"""Run command with own globals/locals and returns anything printed."""
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old_stdout = sys.stdout
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sys.stdout = mystdout = StringIO()
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try:
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exec(command, self.globals, self.locals)
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sys.stdout = old_stdout
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output = mystdout.getvalue()
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except Exception as e:
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sys.stdout = old_stdout
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output = str(e)
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return output
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