Python在线运行代码助手

Python代码运行助手可以让你在线输入Python代码，然后通过本机运行的一个Python脚本来执行代码。原理如下：

在网页输入代码：

点击Run按钮，代码被发送到本机正在运行的Python代码运行助手；

Python代码运行助手将代码保存为临时文件，然后调用Python解释器执行代码；

网页显示代码执行结果：

下载

点击右键，目标另存为：learning.py

备用下载地址：learning.py

完整代码：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

r\'\'\'
learning.py

A Python 3 tutorial from http://www.liaoxuefeng.com

Usage:

python3 learning.py
\'\'\'

import sys

def check_version():
 v = sys.version_info
 if v.major == 3 and v.minor >= 4:
  return True
 print(\'Your current python is %d.%d. Please use Python 3.4.\' % (v.major, v.minor))
 return False

if not check_version():
 exit(1)

import os, io, json, subprocess, tempfile
from urllib import parse
from wsgiref.simple_server import make_server

EXEC = sys.executable
PORT = 39093
HOST = \'local.liaoxuefeng.com:%d\' % PORT
TEMP = tempfile.mkdtemp(suffix=\'_py\', prefix=\'learn_python_\')
INDEX = 0

def main():
 httpd = make_server(\'127.0.0.1\', PORT, application)
 print(\'Ready for Python code on port %d...\' % PORT)
 httpd.serve_forever()

def get_name():
 global INDEX
 INDEX = INDEX + 1
 return \'test_%d\' % INDEX

def write_py(name, code):
 fpath = os.path.join(TEMP, \'%s.py\' % name)
 with open(fpath, \'w\', encoding=\'utf-8\') as f:
  f.write(code)
 print(\'Code wrote to: %s\' % fpath)
 return fpath

def decode(s):
 try:
  return s.decode(\'utf-8\')
 except UnicodeDecodeError:
  return s.decode(\'gbk\')

def application(environ, start_response):
 host = environ.get(\'HTTP_HOST\')
 method = environ.get(\'REQUEST_METHOD\')
 path = environ.get(\'PATH_INFO\')
 if method == \'GET\' and path == \'/\':
  start_response(\'200 OK\', [(\'Content-Type\', \'text/html\')])
  return [b\'
Run
\']
 if method == \'GET\' and path == \'/env\':
  start_response(\'200 OK\', [(\'Content-Type\', \'text/html\')])
  L = [b\'\']
  for k, v in environ.items():
   p = \'
%s = %s\' % (k, str(v))
   L.append(p.encode(\'utf-8\'))
  L.append(b\'\')
  return L
 if host != HOST or method != \'POST\' or path != \'/run\' or not environ.get(\'CONTENT_TYPE\', \'\').lower().startswith(\'application/x-www-form-urlencoded\'):
  start_response(\'400 Bad Request\', [(\'Content-Type\', \'application/json\')])
  return [b\'{\"error\":\"bad_request\"}\']
 s = environ[\'wsgi.input\'].read(int(environ[\'CONTENT_LENGTH\']))
 qs = parse.parse_qs(s.decode(\'utf-8\'))
 if not \'code\' in qs:
  start_response(\'400 Bad Request\', [(\'Content-Type\', \'application/json\')])
  return [b\'{\"error\":\"invalid_params\"}\']
 name = qs[\'name\'][0] if \'name\' in qs else get_name()
 code = qs[\'code\'][0]
 headers = [(\'Content-Type\', \'application/json\')]
 origin = environ.get(\'HTTP_ORIGIN\', \'\')
 if origin.find(\'.liaoxuefeng.com\') == -1:
  start_response(\'400 Bad Request\', [(\'Content-Type\', \'application/json\')])
  return [b\'{\"error\":\"invalid_origin\"}\']
 headers.append((\'Access-Control-Allow-Origin\', origin))
 start_response(\'200 OK\', headers)
 r = dict()
 try:
  fpath = write_py(name, code)
  print(\'Execute: %s %s\' % (EXEC, fpath))
  r[\'output\'] = decode(subprocess.check_output([EXEC, fpath], stderr=subprocess.STDOUT, timeout=5))
 except subprocess.CalledProcessError as e:
  r = dict(error=\'Exception\', output=decode(e.output))
 except subprocess.TimeoutExpired as e:
  r = dict(error=\'Timeout\', output=\'执行超时\')
 except subprocess.CalledProcessError as e:
  r = dict(error=\'Error\', output=\'执行错误\')
 print(\'Execute done.\')
 return [json.dumps(r).encode(\'utf-8\')]

if __name__ == \'__main__\':
 main()

运行

在存放learning.py的目录下运行命令：

复制代码 代码如下:
C:\\Users\\michael\\Downloads> python learning.py

如果看到Ready for Python code on port 39093…表示运行成功，不要关闭命令行窗口，最小化放到后台运行即可：

试试效果

需要支持HTML5的浏览器：

IE >= 9
Firefox
Chrome
Sarafi