L1 - Doc Loading - No module named 'tenacity' error

Short Course Q&A LangChain: Chat with Your Data
1

Greetings,

In trying to rerun the class code in my local environment, I am running into a snag with the tenacity module. When I checked, it shows tenacity v8.2.2 is installed.

This is what happens - I run this code (incidentally, this worked yesterday is now failing today):

from langchain.document_loaders import PyPDFLoader
loader = PyPDFLoader("docs/NIST-Privacy-Framework-V1.0-Core-PDF.pdf")
pages = loader.load()

And then the error that is returned looks like what I am pasting in below. Does anyone have any ideas? I’ve installed, re-installed, upgraded LangChain etc, and installed Tenacity on its own too.


---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
Cell In[7], line 1
----> 1 from langchain.document_loaders import PyPDFLoader
      2 loader = PyPDFLoader("docs/NIST-Privacy-Framework-V1.0-Core-PDF.pdf")
      3 pages = loader.load()

File ~/anaconda3/lib/python3.10/site-packages/langchain/__init__.py:6
      3 from importlib import metadata
      4 from typing import Optional
----> 6 from langchain.agents import MRKLChain, ReActChain, SelfAskWithSearchChain
      7 from langchain.cache import BaseCache
      8 from langchain.chains import (
      9     ConversationChain,
     10     LLMBashChain,
   (...)
     18     VectorDBQAWithSourcesChain,
     19 )

File ~/anaconda3/lib/python3.10/site-packages/langchain/agents/__init__.py:2
      1 """Interface for agents."""
----> 2 from langchain.agents.agent import (
      3     Agent,
      4     AgentExecutor,
      5     AgentOutputParser,
      6     BaseMultiActionAgent,
      7     BaseSingleActionAgent,
      8     LLMSingleActionAgent,
      9 )
     10 from langchain.agents.agent_toolkits import (
     11     create_csv_agent,
     12     create_json_agent,
   (...)
     21     create_vectorstore_router_agent,
     22 )
     23 from langchain.agents.agent_types import AgentType

File ~/anaconda3/lib/python3.10/site-packages/langchain/agents/agent.py:16
     13 from pydantic import BaseModel, root_validator
     15 from langchain.agents.agent_types import AgentType
---> 16 from langchain.agents.tools import InvalidTool
     17 from langchain.base_language import BaseLanguageModel
     18 from langchain.callbacks.base import BaseCallbackManager

File ~/anaconda3/lib/python3.10/site-packages/langchain/agents/tools.py:4
      1 """Interface for tools."""
      2 from typing import Optional
----> 4 from langchain.callbacks.manager import (
      5     AsyncCallbackManagerForToolRun,
      6     CallbackManagerForToolRun,
      7 )
      8 from langchain.tools.base import BaseTool, Tool, tool
     11 class InvalidTool(BaseTool):

File ~/anaconda3/lib/python3.10/site-packages/langchain/callbacks/__init__.py:13
     11 from langchain.callbacks.human import HumanApprovalCallbackHandler
     12 from langchain.callbacks.infino_callback import InfinoCallbackHandler
---> 13 from langchain.callbacks.manager import (
     14     get_openai_callback,
     15     tracing_enabled,
     16     wandb_tracing_enabled,
     17 )
     18 from langchain.callbacks.mlflow_callback import MlflowCallbackHandler
     19 from langchain.callbacks.openai_info import OpenAICallbackHandler

File ~/anaconda3/lib/python3.10/site-packages/langchain/callbacks/manager.py:37
     35 from langchain.callbacks.openai_info import OpenAICallbackHandler
     36 from langchain.callbacks.stdout import StdOutCallbackHandler
---> 37 from langchain.callbacks.tracers.langchain import LangChainTracer
     38 from langchain.callbacks.tracers.langchain_v1 import LangChainTracerV1, TracerSessionV1
     39 from langchain.callbacks.tracers.stdout import ConsoleCallbackHandler

File ~/anaconda3/lib/python3.10/site-packages/langchain/callbacks/tracers/__init__.py:3
      1 """Tracers that record execution of LangChain runs."""
----> 3 from langchain.callbacks.tracers.langchain import LangChainTracer
      4 from langchain.callbacks.tracers.langchain_v1 import LangChainTracerV1
      5 from langchain.callbacks.tracers.stdout import ConsoleCallbackHandler

File ~/anaconda3/lib/python3.10/site-packages/langchain/callbacks/tracers/langchain.py:11
      8 from typing import Any, Dict, List, Optional, Set, Union
      9 from uuid import UUID
---> 11 from langchainplus_sdk import LangChainPlusClient
     13 from langchain.callbacks.tracers.base import BaseTracer
     14 from langchain.callbacks.tracers.schemas import Run, RunTypeEnum, TracerSession

File ~/anaconda3/lib/python3.10/site-packages/langchainplus_sdk/__init__.py:4
      1 """LangChain+ Client."""
      2 from importlib import metadata
----> 4 from langchainplus_sdk.client import LangChainPlusClient
      5 from langchainplus_sdk.evaluation.evaluator import EvaluationResult, RunEvaluator
      6 from langchainplus_sdk.run_trees import RunTree

File ~/anaconda3/lib/python3.10/site-packages/langchainplus_sdk/client.py:30
     28 from pydantic import BaseSettings, Field, root_validator
     29 from requests import Response
---> 30 from tenacity import (
     31     before_sleep_log,
     32     retry_if_exception_type,
     33     stop_after_attempt,
     34     wait_exponential,
     35 )
     37 from langchainplus_sdk.evaluation.evaluator import RunEvaluator
     38 from langchainplus_sdk.schemas import (
     39     APIFeedbackSource,
     40     Dataset,
   (...)
     54     TracerSessionResult,
     55 )

ModuleNotFoundError: No module named 'tenacity'

Is it possible that with all of the installing and reinstalling, I’ve mucked up the environment?

Thanks,
Kim

2

This was due to my mucking up the environment. I created a new Anaconda environment, reinstalled Python, Jupyter notebook and the various Langchain packages and was ready to go.