搜索文本文件并打印行号 [英] Searching a text file and printing line numbers

问题描述

如何获取函数以在文本文件中找到单词所在的行并打印相应的行号?

How do you get your function to find the lines in the text file where the word occurs and print the corresponding line numbers?

我必须打开一个带有段落的文本文件，然后应该在段落中搜索某些单词，然后为这些单词打印特定的行号.

I had to open a text file with the paragraph and then am supposed to search the paragraph for certain words and then print the specific line numbers for the words.

这是我到目前为止所拥有的.

Here is what I have so far.

words = [network, devices, computer, fire, local, area, room, single]
    def index(string):
       lines = open('Network.txt', 'r')
       string = str(lines.read())
       lines.close()
       return string

推荐答案

使用枚举和相关行的设置并集如果您只想测试单个单词的存在，则:

Use enumerate and a set union of the line in question if you just want to test for presence of individual words:

words={'some', 'target', 'words', 'in', 'a', 'set'}

with open(f_name) as fin:
    for line_num, line in enuemrate(fin):
        if set(line.split()) & words:
            print(line_num, line)

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