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util.py
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33 lines (26 loc) · 633 Bytes
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# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License.
import contextlib
try:
from io import StringIO
except ImportError:
from StringIO import StringIO # 2.7
import sys
@contextlib.contextmanager
def noop_cm():
yield
@contextlib.contextmanager
def hide_stdio():
"""Swallow stdout and stderr."""
ignored = IgnoredIO()
sys.stdout = ignored
sys.stderr = ignored
try:
yield
finally:
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
class IgnoredIO(StringIO):
"""A noop "file"."""
def write(self, msg):
pass