Function write_all

Lib/test/test_pty.py:81–86

(fd, data)

def write_all(fd, data):
    written = os.write(fd, data)
    if written != len(data):
        # gh-73256, gh-110673: It should never happen, but check just in case
        raise Exception(f"short write: os.write({fd}, {len(data)} bytes) "
                        f"wrote {written} bytes")


# Marginal testing of pty suite. Cannot do extensive 'do or fail' testing