Question

我想在findall找到搜索模式之后向文件添加新行。我使用的代码仅将输入文件的内容写入输出文件。它不会在输出文件中添加新行。如何修复我的代码？

import re
text = """
Hi! How are you?
Can you hear me?
"""
with open("input.txt", "r") as infile:
    readcontent = infile.readlines()

with open("output.txt", "w") as out_file:
    for line in readcontent:
    x1 = re.findall(text, line)
    if line == x1:
        line = line + text
    out_file.write(line)

Input.txt：

ricochet robots
settlers of catan
acquire
Hi! How are you?
Can you hear me?
this is very valuable
finish

所需的output.txt：

ricochet robots
settlers of catan
acquire
Hi! How are you?
Can you hear me?

Added new line

this is very valuable
finish

Answer 1

在此不使用error: cannot find symbol .setCredentials(GoogleCredentials.fromStream(serviceAccount)。检查当前行，如果要检查的行，请添加换行符。

regex

如果您本身需要with open("output.txt", "w") as out_file: for line in readcontent: out_file.write(line) if line.strip() == 'Can you hear me?': out_file.write('\n')，请继续进行以下操作（尽管我永远不会推荐）：

regex

Answer 2

尝试遍历每行并检查您的文本是否存在。

例如：

fields

输出：

res = []
with open(filename, "r") as infile:
    for line in infile:
        if line.strip() == "Hi! How are you?":
            res.append(line.strip())
            lineVal = (next(infile)).strip() 
            if lineVal == "Can you hear me?":
                res.append(lineVal)
                res.append("\n Added new line \n")
        else:
            res.append(line.strip())



with open(filename1, "w") as out_file:
    for line in res:
        out_file.write(line+"\n")

Answer 3

这是您想要的吗？

List<string> toMatch = stringToMatch.Split(' ').ToList();
List<string> match = arrayOfStrings.Where(x => 
                                   !toMatch.Any(ele => !x.ToLower()
                                   .Contains(ele.ToLower())))
                                   .ToList();

$category['category'] = $this->db->where("id", $id) -> get ("category")->row(); $this->load->view("category_edit", $category);如下所示：

text = "Can you hear me?"
with open("input.txt", "r") as infile:
    readcontent = infile.readlines()

with open("output.txt", "w") as out_file:
    for idx,line in enumerate(readcontent):
       if line.rstrip() == text:
           line+='\nAdded new line\n\n'
       out_file.write(line)

如果findall找到搜索模式，则在文件中插入新行

3 个答案: