Цены на один вид жилья в России снизились20:41
return stripped + u"\u001b[41m" + " " * (len(input) - len(stripped)) + u"\u001b[0m"，更多细节参见PDF资料
。PDF资料对此有专业解读
Drawing the lineThe line between “expected” and “unexpected” depends on the task.
Number (3): Everything in this space must add up to 3. The answer is 3-0, placed vertically.，这一点在电影中也有详细论述