Makes @st.cache_resource compatible with Cython #10353
Description
Checklist
- I have searched the existing issues for similar feature requests.
- I added a descriptive title and summary to this issue.
Summary
For a user program that uses @st.cache_resource, currently it is not possible to use Cython to compile the user program.
As in cache_utils, streamlit uses inspect.getsource(func) to attempt to read the source, Cython compiled code will cause an TypeError exception but this is not handled by the fallback to bytecode.
Why?
No response
How?
Instead of handling OSError, fallback to bytecode upon any Exception would fix the issue.
Additional Context
File "<redacted>/site-packages/streamlit/runtime/caching/cache_resource_api.py", line 238, in __call__
return self._decorator(
File "<redacted>/site-packages/streamlit/runtime/metrics_util.py", line 409, in wrapped_func
result = non_optional_func(*args, **kwargs)
File "<redacted>/site-packages/streamlit/runtime/caching/cache_resource_api.py", line 431, in _decorator
return make_cached_func_wrapper(
File "<redacted>/site-packages/streamlit/runtime/caching/cache_utils.py", line 161, in make_cached_func_wrapper
cached_func = CachedFunc(info)
File "<redacted>/site-packages/streamlit/runtime/caching/cache_utils.py", line 193, in __init__
self._function_key = _make_function_key(info.cache_type, info.func)
File "<redacted>/site-packages/streamlit/runtime/caching/cache_utils.py", line 488, in _make_function_key
source_code = inspect.getsource(func)
File "/usr/lib/python3.10/inspect.py", line 1139, in getsource
lines, lnum = getsourcelines(object)
File "/usr/lib/python3.10/inspect.py", line 1121, in getsourcelines
lines, lnum = findsource(object)
File "/usr/lib/python3.10/inspect.py", line 940, in findsource
file = getsourcefile(object)
File "/usr/lib/python3.10/inspect.py", line 817, in getsourcefile
filename = getfile(object)
File "/usr/lib/python3.10/inspect.py", line 797, in getfile
raise TypeError('module, class, method, function, traceback, frame, or '
TypeError: module, class, method, function, traceback, frame, or code object was expected, got cython_function_or_method
This trace was collected with streamlit==1.41.0 but the issue persists with the current branch.