The simple principle and implementation code of the python online compiler, And the python Compiler

The simple principle and implementation code of the python online compiler, And the python Compiler

Let's take a look at the effect (a simple ONE ):

Principle: write the code data of the post request to a file on the server, and then execute the returned result using the python compiler of the server.

Implementation Code:

＃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 # create a temporary folder, the Temporary Folder path TempFile = tempfile is returned. mkdtemp (suffix = '_ test', prefix = 'python _') # file name FileNum = int (time. time () * 1000) # python compiler location EXEC = sys.exe cutable # Get python version def get_version (): v = sys. version_info version = "python % s. % s "% (v. major, v. minor) return version # obtain the py file name def get_pyname (): global FileNum return 'test _ % d' % FileNum # receive code written to the file 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 # encoding def decode (s): try: return s. decode ('utf-8') encoding t UnicodeDecodeError: return s. decode ('gbk') # main execution function def main (code): r = dict () r ["version"] = get_version () pyname = get_pyname () fpath = write_file (pyname, code) try: # subprocess. check_output is the parent process that waits for the completion of the Child process and returns the output result from the child process to the standard output # stderr is the standard output type outdata = decode (subprocess. check_output ([EXEC, fpath], stderr = subprocess. STDOUT, timeout = 5) wait t subprocess. calledProcessError as e: # e. output is the standard output of Error information # r ["code"] = 'error' r ["output"] = decode (e. output) return r else: # data returned successfully r ['output'] = outdata r ["code"] = "Success" return r finally: # delete a file (in fact, temporary files do not need to be deleted and will be automatically deleted) try: OS. remove (fpath) failed t Exception as e: exit (1) if _ name _ = '_ main _': code = "print (11 ); print (22) "print (main (code ))

Run app. run () and submit code through post. We can further process the output. I just want to understand the principle and will not continue.

The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.