Example from the main page hungs. Python3.8

[RugnarLodbrok]

This example doesn't work

import subprocess
from capturer import CaptureOutput

with CaptureOutput() as capturer:
    # Generate some output from Python.
    print("Output from Python")
    # Generate output from a subprocess.
    subprocess.call(["echo", "Output from a subprocess"])
    # Get the output in each of the supported formats.
    assert capturer.get_bytes() == b'Output from Python\r\nOutput from a subprocess\r\n'
    assert capturer.get_lines() == [u'Output from Python', u'Output from a subprocess']
    assert capturer.get_text() == u'Output from Python\nOutput from a subprocess'

Interpreter just hungs