Python代码运行助手

#!/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

							

								
								

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']
    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()