[lang-ref] ( printf_like_format ) ( python )

def test_printf_like_format():
    # '%d' % n
    name   = 'A'
    number = 32
    s = '%s-%03d' % (name, number)
    assert s == 'A-032'

def test_printf_like_format_alternative():
    name   = 'A'
    number = 32
    s = f'{name}-{number:03d}'
    assert s == 'A-032'