Question

我必须编写一个程序来读取包含两列数字的文本文件，然后计算每列的总数和平均值。我能够分隔列，但是当我试图找到总和时，我不断收到各种错误，例如“TypeError：+支持的操作数类型+：'int'和'str'”。以下是我到目前为止的情况：

def main():
    print("This program will read the file and calculate the total and average of each column of  numbers")
    filename= input("\nWhat is the name of the file?")
    myfile = open(filename, "r")
    with open("numbers.txt") as myfile:
        for line in myfile:
            parts = line.split()
            if len(parts) > 1:
                total = sum(parts[0])
                total2 = sum(parts[1])
                print(total)
                print(total2)

main()

Answer 1

您需要使用float函数转换字符串。您实际上并没有递增total和total2，而是在每个值处分配它们。

这应该做你想要的：

def main():
    print("This program will read the file and calculate the total and average of each column of  numbers")
    filename= input("\nWhat is the name of the file?")
    myfile = open(filename, "r")
    with open("numbers.txt") as myfile:
        count = 0
        total = 0.0
        total2 = 0.0
        for line in myfile:
            parts = line.split()
            if len(parts) > 1:
                total += float(parts[0])
                total2 += float(parts[1])
                count += 1
        print(total)
        print(total2)
        print(total / count)
        print(total2 / count)

编写一个程序，读取包含两列数字的文本文件，然后计算每列的总数和平均值？

1 个答案: