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Python在线运行代码助手

转载 作者:qq735679552 更新时间:2022-09-27 22:32:09 28 4
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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:

Python在线运行代码助手

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:

Python在线运行代码助手

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:

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#!/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 '<html><head><title>Learning Python</title></head><body><form method="post" action="/run"><textarea name="code" style="width:90%;height: 600px"></textarea><p><button type="submit">Run</button></p></form></body></html>' ]
  if method = = 'GET' and path = = '/env' :
   start_response( '200 OK' , [( 'Content-Type' , 'text/html' )])
   L = [b '<html><head><title>ENV</title></head><body>' ]
   for k, v in environ.items():
    p = '<p>%s = %s' % (k, str (v))
    L.append(p.encode( 'utf-8' ))
   L.append(b '</html>' )
   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:

Python在线运行代码助手

试试效果 。

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