如何在.txt文件中查找平均值

您应该首先将从文件检索的数据转换为整数，因为数据列表包含的字符串不是数字。在转换为整数后，可以很容易地找到平均值：

为什么需要转换为int？

>>> '2' > '10'  #strings are compared lexicographicallyTrue

码：

def summaryStats():    filename = input("Enter a file name: ")    with open(filename) as f:        data = [int(line) for line in f]    print("The minimum value is ", min(data))    print("The maximum value is ", max(data))    print("The average value is ", sum(data)/len(data))

输出：

Enter a file name: abc1The minimum value is  255The maximum value is  893The average value is  550.6666666666666