LangChain Zep Integration Fails Due to Deprecated Import

[rabbit19981023]

Checked other resources

• I added a very descriptive title to this issue.
• I searched the LangChain documentation with the integrated search.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).

Example Code

from langchain_community.memory.zep_memory import ZepMemory

memory = ZepMemory(
    session_id="SESSION ID",
    url="http://localhost:8000",
    api_key="ZEP SECRET",
)

Error Message and Stack Trace (if applicable)

Traceback (most recent call last):
File "/home/andrew/my-projects/ai-learning/langchain-zep-test/.venv/lib/python3.12/site-packages/langchain_community/chat_message_histories
/zep.py", line 79, in init
from zep_python import ZepClient
ImportError: cannot import name 'ZepClient' from 'zep_python' (/home/andrew/my-projects/ai-learning/langchain-zep-test/.venv/lib/python3.12/s
ite-packages/zep_python/init.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/home/andrew/my-projects/ai-learning/langchain-zep-test/.venv/bin/langchain-zep-test", line 5, in
from langchain_zep_test import main
File "/home/andrew/my-projects/ai-learning/langchain-zep-test/src/langchain_zep_test/init.py", line 7, in
memory = ZepMemory(
^^^^^^^^^^
File "/home/andrew/my-projects/ai-learning/langchain-zep-test/.venv/lib/python3.12/site-packages/langchain_community/memory/zep_memory.py",
line 91, in init
chat_message_history = ZepChatMessageHistory(
^^^^^^^^^^^^^^^^^^^^^^
File "/home/andrew/my-projects/ai-learning/langchain-zep-test/.venv/lib/python3.12/site-packages/langchain_community/chat_message_histories
/zep.py", line 81, in init
raise ImportError(
ImportError: Could not import zep-python package. Please install it with pip install zep-python.

Description

I found the source code uses ZepClient, which is deprecated, now Zep provides Zep and AsyncZep to use.

System Info

System Information

OS: Linux
OS Version: #1 SMP Fri Mar 29 23:14:13 UTC 2024
Python Version: 3.12.6 (main, Sep 9 2024, 22:11:19) [Clang 18.1.8 ]

Package Information

langchain_core: 0.3.10
langchain: 0.3.3
langchain_community: 0.3.2
langsmith: 0.1.135
langchain_groq: 0.2.0
langchain_text_splitters: 0.3.0
langchain_zep_test: 0.1.0

Optional packages not installed

langgraph
langserve

Other Dependencies

aiohttp: 3.10.10
async-timeout: Installed. No version info available.
dataclasses-json: 0.6.7
groq: 0.11.0
httpx: 0.27.2
jsonpatch: 1.33
langchain-community>=0.3.2: Installed. No version info available.
langchain-groq>=0.2.0: Installed. No version info available.
numpy: 1.26.4
orjson: 3.10.7
packaging: 24.1
pydantic: 2.9.2
pydantic-settings: 2.5.2
PyYAML: 6.0.2
requests: 2.32.3
requests-toolbelt: 1.0.0
SQLAlchemy: 2.0.35
tenacity: 8.5.0
typing-extensions: 4.12.2
zep-python>=2.0.2: Installed. No version info available.

[Jacky3003]

Hello, interested in diving deeper into this issue and I also would like to work on a fix if possible. Have you found any potential solutions as of now @rabbit19981023?

EDIT: getting the same error with the following system info:

System Information

OS: Linux
OS Version: #45~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Sep 11 15:25:05 UTC 2
Python Version: 3.10.12 (main, Sep 11 2024, 15:47:36) [GCC 11.4.0]

Package Information

langchain_core: 0.3.10
langchain: 0.3.3
langchain_community: 0.3.2
langsmith: 0.1.135
langchain_groq: 0.2.0
langchain_text_splitters: 0.3.0
langchain_zep_test: Not installed

Optional packages not installed

langgraph
langserve

Other Dependencies

aiohttp: 3.10.10
async-timeout: 4.0.3
dataclasses-json: 0.6.7
groq: 0.11.0
httpx: 0.27.2
jsonpatch: 1.33
numpy: 1.21.5
orjson: 3.10.7
packaging: 24.1
pydantic: 2.9.2
pydantic-settings: 2.5.2
PyYAML: 5.4.1
requests: 2.32.3
requests-toolbelt: 1.0.0
SQLAlchemy: 2.0.32
tenacity: 8.5.0
typing-extensions: 4.12.2
langchain-community>=0.3.2: Installed. No version info available.
langchain-groq>=0.2.0: Installed. No version info available.
zep-python>=2.0.2: Installed. No version info available.

Should also note that any tests and dependencies that use ZepClient need to be changed as well to reflect usages for Zep and AsyncZep.

[rabbit19981023]

Have you found any potential solutions as of now

@Jacky3003 I think just to update some interface to get working without error, something like ZepClient.memory.get_memory -> Zep.memory.get.

But I haven't tried to solve it yet. If you can fix it, that would be a big help

[Jacky3003]

@rabbit19981023 Zep and AsyncZep exist within langchain under libs/community/langchain_community/memory/zep_cloud_memory.py, and libs/community/langchain_community/chat_message_histories/zep_cloud.py, so you could try using those as such:

from langchain_community.memory.zep_cloud_memory import ZepCloudMemory

But it also seems to have its fair share of issues, so either way a fix is needed, just wanted to give an update.