python在线编译器的简单原理及简单实现代码

＃flaskrun.py # -*- coding: utf-8 -*- # __author__="ZJL"  from flask import Flask from flask import request from flask import Response import json import zxby  app = Flask(__name__)   def Response_headers(content):   resp = Response(content)   resp.headers['Access-Control-Allow-Origin'] = '*'   return resp  @app.route('/') def hello_world():   return Response_headers('hello world!!!')  @app.route('/run', methods=['POST']) def run():   if request.method == 'POST' and request.form['code']:     code = request.form['code']     print(code)     jsondata = zxby.main(code)     return Response_headers(str(jsondata))  @app.errorhandler(403) def page_not_found(error):   content = json.dumps({"error_code": "403"})   resp = Response_headers(content)   return resp  @app.errorhandler(404) def page_not_found(error):   content = json.dumps({"error_code": "404"})   resp = Response_headers(content)   return resp  @app.errorhandler(400) def page_not_found(error):   content = json.dumps({"error_code": "400"})   resp = Response_headers(content)   return resp  @app.errorhandler(405) def page_not_found(error):   content = json.dumps({"error_code": "405"})   resp = Response_headers(content)   return resp  @app.errorhandler(410) def page_not_found(error):   content = json.dumps({"error_code": "410"})   resp = Response_headers(content)   return resp  @app.errorhandler(500) def page_not_found(error):   content = json.dumps({"error_code": "500"})   resp = Response_headers(content)   return resp  if __name__ == '__main__':   app.run(debug=True) 

#zxby.py # -*- coding: utf-8 -*- # __author__="ZJL" import os, sys, subprocess, tempfile, time  # 创建临时文件夹,返回临时文件夹路径 TempFile = tempfile.mkdtemp(suffix='_test', prefix='python_') # 文件名 FileNum = int(time.time() * 1000) # python编译器位置 EXEC = sys.executable   # 获取python版本 def get_version():   v = sys.version_info   version = "python %s.%s" % (v.major, v.minor)   return version   # 获得py文件名 def get_pyname():   global FileNum   return 'test_%d' % FileNum   # 接收代码写入文件 def write_file(pyname, code):   fpath = os.path.join(TempFile, '%s.py' % pyname)   with open(fpath, 'w', encoding='utf-8') as f:     f.write(code)   print('file path: %s' % fpath)   return fpath   # 编码 def decode(s):   try:     return s.decode('utf-8')   except UnicodeDecodeError:     return s.decode('gbk')    # 主执行函数   def main(code):   r = dict()   r["version"] = get_version()   pyname = get_pyname()   fpath = write_file(pyname, code)   try:     # subprocess.check_output 是 父进程等待子进程完成，返回子进程向标准输出的输出结果     # stderr是标准输出的类型     outdata = decode(subprocess.check_output([EXEC, fpath], stderr=subprocess.STDOUT, timeout=5))   except subprocess.CalledProcessError as e:     # e.output是错误信息标准输出     # 错误返回的数据     r["code"] = 'Error'     r["output"] = decode(e.output)     return r   else:     # 成功返回的数据     r['output'] = outdata     r["code"] = "Success"     return r   finally:     # 删除文件(其实不用删除临时文件会自动删除)     try:       os.remove(fpath)     except Exception as e:       exit(1)  if __name__ == '__main__':   code = "print(11);print(22)"   print(main(code))