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Python線上運行程式碼助手

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Aug 04, 2016 am 08:55 AM

python

Python程式碼運行助手可以讓你在線上輸入Python程式碼，然後透過本機執行的一個Python腳本來執行程式碼。原理如下：

在網頁輸入代碼：

點選Run按鈕，程式碼被送到本機正在運作的Python程式碼運行助手；

Python程式碼運行助手將程式碼儲存為臨時文件，然後呼叫Python解釋器執行程式碼；

網頁顯示程式碼執行結果：

下載

點選右鍵，目標另存為：learning.py

備用下載位址：learning.py

完整程式碼：

#!/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()

運行

在存放learning.py的目錄下執行指令：

複製程式碼程式碼如下:

C:UsersmichaelDownloads> python learning.py

如果看到Ready for Python code on port 39093...表示運行成功，不要關閉命令列窗口，最小化放到後台運行即可：