python - 返回一个字符串，如何格式化输出

Question

我有代码分析一个 csv 文件并返回一列的最大值和同一行中另一列的值作为最大值。我在格式化输出时遇到问题。

代码:

import csv

def bigQuake(inputfilename):
    with open(inputfilename,"r") as input_file:
        reader = csv.reader(input_file)

        maxvalue = 0.0
        location = None
        for line in reader:
            try:
                p = float(line[4])
                if p > maxvalue:
                    maxvalue = p
                    location = line[13]
            except ValueError:
               pass
    return "The largest earthquake was a", maxvalue, "magnitude earthquake", location + "."

当前输出是什么样的:

>>> bigQuake("file.csv")
>>> ('The largest earthquake was a', 6.3, 'magnitude earthquake', '13km N of Kunisaki-shi, Japan.')

我想要的:

>>> bigQuake("file.csv")
>>> 'The largest earthquake was a 6.3 magnitude earthquake 13km N of Kunisaki-shi, Japan.'

我该如何解决这个问题？

Answer 1

使用这个，

return "The largest earthquake was a" + str(maxvalue) + "magnitude earthquake" + location + "."

或

return "The largest earthquake was a %s magnitude earthquake %s." % (maxvalue, location)