Python 批量处理文件并将文件扔给程序

前言

Linux下我们经常会写一些shell脚本来辅助我们学习或者工作，从而提高效率。
之前就写过相关博客：
Linux下利用shell脚本批量产生内容有规律变化的文件
csh 脚本批量处理文件并将文件扔给程序
bcsh 脚本批量处理文件并将文件扔给程序

程序

批量造 case 并将 cmd 扔给程序运行

import os
import concurrent.futures
import subprocess


def collect_comands(case_list_file):
  commands = []
  case_list = []
  with open(case_list_file, 'r') as f:
    case_list = [line.strip() for line in f.readlines()]
  #print(case_list)
  for case in case_list:
    command = f"""
              pwd;
              ls;
              #cp $cmd_option ./cmd
              #sed -i "s/pattern/$case/g" ./cmd
              # program -i input.txt -o out.txt;
              """
    commands.append(command)
  return commands


def run_command(cmd):
    process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    stdout, stderr = process.communicate()
    if process.returncode != 0:
        raise Exception(f"ERROR : {cmd}, stderr: {stderr.decode('utf-8')}, stdout: {stdout.decode('utf-8')}")
    return stdout.decode('utf-8')


def run_command_parallel(commands, max_concurrent_commands):
  with concurrent.futures.ThreadPoolExecutor(max_workers=max_concurrent_commands) as executor:
    futures = [executor.submit(run_command, cmd) for cmd in commands]
    for future in concurrent.futures.as_completed(futures):
      try:
        result = future.result()
        print(result)
      except Exception as e:
        print(f"error: {e}")


if __name__ == "__main__":
  
  case_list_file = "case_list.txt"
  
  if not os.path.exists(case_list_file) : 
    print(case_list_file, " is not exit, please check it.")

  commands = collect_comands(case_list_file)
  
  max_concurrent_commands = 20
  run_command_parallel(commands, max_concurrent_commands)