从文件中计算统计量

Question

编写一个名为file_stats的函数，该函数接受一个字符串参数(in_file)，该参数是现有文本文件的名称。函数file_stats应该计算关于in_file的三个统计信息:包含的行数、字数和字符数，并将这三个统计信息打印在单独的行上。例如，以下内容将是正确的输入和输出。(提示:字符的数量可能因您正在工作的平台而异。) file_stats('created_equal.txt')行2字13个字符72个

以下是我所拥有的：

fileName = "C:\Users\Jeff Hardy\Desktop\index.txt"
chars = 0
words = 0
lines = 0

def file_stats(in_file):
    global lines, words, chars
    with open(in_file, 'r') as fd:
        for line in fd:
            lines += 1
            wordsList = line.split()

        words += len(wordsList)

        for word in wordsList:
            chars += len(word)

file_stats(fileName)
print("Number of lines: {0}".format(lines))
print("Number of words: {0}".format(words))
print("Number of chars: {0}".format(chars))

代码给出了以下错误：

(unicode错误)‘独角形转义’编解码器无法解码位置2-3的字节:截断\UXXXXXXXX转义

Answer 1

我相信你的错误与文件的编码有关，

或needs to be fileName = "C:\\Users\\Jeff Hardy\\Desktop\\index.txt"

指令要求您在函数中打印，不影响全局变量，然后需要更新循环中的值，而不是在它之后更新(缩进问题)。

def file_stats(in_file):
    lines = words = chars = 0
    with open(in_file, 'r', encoding="utf-8") as fd:
        for line in fd:
            lines += 1
            words += len(line.split())  # If you split "x , y" is the comma a word?
            chars += len(line)  # Are spaces considered a character?

    print("lines {0}".format(lines))
    print("words {0}".format(words))
    print("characters {0}".format(chards))