Capture C-level stdout/stderr pipes in Python via
For more details on why this is needed, please read this blog post.
pip install wurlitzer
Capture stdout/stderr in pipes:
from wurlitzer import pipes with pipes() as (out, err): call_some_c_function() stdout = out.read()
Capture stdout/stderr in StringIO:
from io import StringIO from wurlitzer import pipes, STDOUT out = StringIO() with pipes(stdout=out, stderr=STDOUT): call_some_c_function() stdout = out.getvalue()
Forward C-level stdout/stderr to Python sys.stdout/stderr, which may already be forwarded somewhere by the environment, e.g. IPython:
from wurlitzer import sys_pipes with sys_pipes(): call_some_c_function()
Or even simpler, enable it as an IPython extension:
To forward all C-level output to IPython during execution.
This package is based on stuff we learned with @takluyver and @karies while working on capturing output from the Cling Kernel for Jupyter.
Wurlitzer makes pipe organs. Get it? Pipes? Naming is hard.