Redirect Python stderr/stdout for a block

process_wrapper.py

import sys
import contextlib
@contextlib.contextmanager
def output_wrapper():
    save_stdout = sys.stdout
    save_stderr = sys.stderr
    sys.stdout = open('stdout.log', 'a')
    sys.stderr = open('stderr.log', 'a')
    yield
    sys.stdout = save_stdout
    sys.stderr = save_stderr
    
with output_wrapper():
    printf("Hello log!")