Function captured_stderr

Lib/test/support/__init__.py:915–922

Capture the output of sys.stderr: with captured_stderr() as stderr: print("hello", file=sys.stderr) self.assertEqual(stderr.getvalue(), "hello\\n")

()

    return captured_output("stdout")

def captured_stderr():
    """Capture the output of sys.stderr:

       with captured_stderr() as stderr:
           print("hello", file=sys.stderr)
       self.assertEqual(stderr.getvalue(), "hello\\n")
    """
    return captured_output("stderr")

def captured_stdin():
    """Capture the input to sys.stdin: