Question

我要完成的工作是，在找到匹配项时在文件中搜索某个字符串，将文件上方的所有内容删除，然后保存文件。我是Python的新手，所以我可能做错了几件事。现在，它创建了一个新文件，但没有任何内容写入其中。

以下是我的代码：

file_type = ".php"
search_str = "}exit();}} ?><?php"
print("SANITIZING........")
print("FOLDERPATH being searched in: ", search_path)
print("FILETYPE being searched for : ", file_type)
print("STRING being searched       : ", search_str)

# LOOPING THROUGH ALL FOLDERS AND FILES
for subdir, dirs, files in os.walk(search_path):
    for file in files:

        # Apply file type filter   
        if file.endswith(file_type):
            bad_codes = ['exit();}} ?><?php']
            orig_file = open(os.path.join(subdir, file))

                for line in orig_file:
                    index = line.find(search_str)
                    if ( index != -1) :
                        new_file  = open(os.path.join(subdir, '-clean2-copy-' + file), 'w')
                        if not any(bad_code in line for bad_code in bad_codes):
                            new_file.write(line)
                        fw.write("CREATED SANITIZED COPY OF BAD PHP FILE: " + os.path.join(subdir, file) + " " + str(index) + "\r\n")

Answer 1

您可以使用布尔值标记非常简单地进行操作-我们将其称为found_str。

found_str = False
for line in orig_file:
    if search_str in line:
        found_str = True
        continue

    if found_str:
        new_file.write(line)

如果愿意，可以进行两个循环：一个循环查找字符串，一个循环写入文件的其余部分：

for line in orig_file:
    if search_str in line:
        break

for line in orig_file:
    new_file.write(line)

这两种方法都能帮到您吗？

在找到字符串之前从文件中剥离所有内容的麻烦

1 个答案: