如何在Python中将布尔值连接到字符串？

Question

我想完成以下任务

answer = True
myvar = "the answer is " + answer

并且myvar的值是"答案是真的".我很确定你可以用Java做到这一点.

Answer 1

answer = True
myvar = "the answer is " + str(answer)

Python不进行隐式转换,因为隐式转换可以掩盖关键的逻辑错误.只需将答案转换为字符串本身以获取其字符串表示形式("True"),或使用字符串格式,如下所示:

myvar = "the answer is %s" % answer

请注意,答案必须设置为True(大写很重要).

Answer 2

推荐的方法是让我们str.format处理转换(docs).%s取代的方法最终可能会被弃用(参见PEP3101).

>>> answer = True
>>> myvar = "the answer is {}".format(answer)
>>> print(myvar)
the answer is True

Answer 3

answer = True
myvar = "the answer is " + str(answer)

要么

myvar = "the answer is %s" % answer