Python — Как получить текст справки help() в переменную?

from io import StringIO
import random
import sys

class OutputInterceptor(list):
    def __enter__(self):
        self._stdout = sys.stdout
        sys.stdout = self._stringio = StringIO()
        return self

    def __exit__(self, *args):
        self.extend(self._stringio.getvalue().splitlines())
        del self._stringio
        sys.stdout = self._stdout

with OutputInterceptor() as output:
    help(random.sample)

print('\n'.join(output))