Recommended use of new cache features in regards to CookieManager

[ksdaftari]

what is recommended change for 1.18+ of streamlit for below code snippet (given st.cache is now deprecated)?

@st.cache(allow_output_mutation=True)
def get_manager():
    return stx.CookieManager()

[ksdaftari]

I am getting below warning if just used the code snippet from readme switching st.cache_resource

warning from streamlit

CachedStFunctionWarning: Your script uses st.component_instance() to write to your Streamlit app from within some cached code at get_manager(). This code will only be called when we detect a cache "miss", which can lead to unexpected results.

How to fix this:

Move the st.component_instance() call outside get_manager().
Or, if you know what you're doing, use @st.cache_resource(suppress_st_warning=True) to suppress the warning.
Traceback:
File "C:\Program Files\Python39\lib\threading.py", line 912, in _bootstrap
    self._bootstrap_inner()
File "C:\Program Files\Python39\lib\threading.py", line 954, in _bootstrap_inner
    self.run()
File "C:\Program Files\Python39\lib\threading.py", line 892, in run
    self._target(*self._args, **self._kwargs)
File "C:\Users\kdaftari\Code\barepos\dashboards\cookie_dash.py", line 11, in <module>
    cookie_manager = get_manager()
File "C:\Users\kdaftari\Code\barepos\dashboards\cookie_dash.py", line 9, in get_manager
    return stx.CookieManager()
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\extra_streamlit_components\CookieManager\__init__.py", line 19, in __init__
    self.cookies = self.cookie_manager(method="getAll", key=key, default={})

the error traceback after warning

ttributeError
Traceback:
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\scriptrunner\script_runner.py", line 565, in _run_script
    exec(code, module.__dict__)
File "C:\Users\kdaftari\Code\barepos\dashboards\cookie_dash.py", line 11, in <module>
    cookie_manager = get_manager()
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\cache_utils.py", line 178, in wrapper
    return cached_func(*args, **kwargs)
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\cache_utils.py", line 207, in __call__
    return self._get_or_create_cached_value(args, kwargs)
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\cache_utils.py", line 232, in _get_or_create_cached_value
    return self._handle_cache_miss(cache, value_key, func_args, func_kwargs)
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\cache_utils.py", line 286, in _handle_cache_miss
    computed_value = self._info.func(*func_args, **func_kwargs)
File "C:\Users\kdaftari\Code\barepos\dashboards\cookie_dash.py", line 9, in get_manager
    return stx.CookieManager()
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\extra_streamlit_components\CookieManager\__init__.py", line 19, in __init__
    self.cookies = self.cookie_manager(method="getAll", key=key, default={})
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\components\v1\components.py", line 79, in __call__
    return self.create_instance(*args, default=default, key=key, **kwargs)
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\metrics_util.py", line 311, in wrapped_func
    result = non_optional_func(*args, **kwargs)
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\components\v1\components.py", line 223, in create_instance
    result = dg._enqueue(
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\delta_generator.py", line 563, in _enqueue
    caching.save_element_message(
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\__init__.py", line 49, in save_element_message
    CACHE_RESOURCE_MESSAGE_REPLAY_CTX.save_element_message(
File "C:\Users\kdaftari\Code\barepos\venv\lib\site-packages\streamlit\runtime\caching\cached_message_replay.py", line 295, in save_element_message
    raise AttributeError

[VovaViliLox]

Neither cache_data nor cache_resources have a flag that allows output mutation, so I am confused as well.

[aht]

+1 Currently Streamlit shows a deprecation warning but neither cache_data nor cache_resource can be used.

[moonbug-car]

+1 it is unusable in streamlit 1.18+

[callzhang]

+1 need a way to use st.cached_data

[Mohamed-512]

New package version uses st.cache_resource

[WillReynolds5]

+1

[hoorelbeke-jimmy]

I still have the same issue with the following snippet:

import extra_streamlit_components as stx
import streamlit as st


@st.cache_resource
def get_manager():
    return stx.CookieManager()


cookie_manager = get_manager()

and following versions:

$ pip list | grep streamlit
extra-streamlit-components            0.1.60
streamlit                             1.29.0

[felimuno]

same issue streamlit 1.31.1

[p50000]

+1

[thiamfook]

Same issue
streamlit 1.32.0
extra-streamlit-components 0.1.71

My temporary workaround:

@st.cache_resource(experimental_allow_widgets=True) 
def get_manager():
    return stx.CookieManager()

[pinkponk]

extra-streamlit-components 0.1.71
streamlit 1.37.1

Get this warning when running with @thiamfook fix. I have newer streamlit version than him.

The experimental_allow_widgets parameter is deprecated and will be removed in a future release. Please remove the experimental_allow_widgets parameter from the @st.cache_resource decorator and move all widget commands outside of cached functions.

To speed up your app, we recommend moving your widgets into fragments. Find out more about fragments in [our docs](https://docs.streamlit.io/develop/api-reference/execution-flow/st.fragment).

If you have a specific use-case that requires the experimental_allow_widgets functionality, please tell us via an [issue on Github](https://github.com/streamlit/streamlit/issues).

How should one use the cookie manager?