import sys
from contextlib import contextmanager
from io import StringIO

@contextmanager
def captured_output():
    new_out = StringIO()
    old_out = sys.stdout
    try:
        sys.stdout = new_out
        yield sys.stdout
    finally:
        sys.stdout = old_out
print("bonjour")
with captured_output() as out:
    print("pas bonjour")
print("au revoir")
with captured_output() as out2:
    print("pas bonjour 2")

output = out.getvalue()
print("my output", output)
output2 = out2.getvalue()
print("my output", output2)