问从路径的子目录中读取文件并将它们附加到一个文件中

EN

cat <directory>/*/* >> <resulting_file>

find <PATH from where to search> -type f > log file # adding filters that you are looking for files.
Ex: find /users/hero/parent -type f > listoffiles.log

find /path -type f -name *.log > listoflogfiles

import os

path_with_subdirs = '/dir/with/subdirectories'

source_files = [os.path.join(dp, f) for dp, dn, filenames in os.walk(path_with_subdirs) for f in filenames]

target_file = '/target/location/output_file.txt'

with open(target_file, 'w') as target:
    for source_file in source_files:
        with open(source_file, 'r') as source:
            [target.write(line) for line in source]