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Python在线运行代码助手

作者：廖雪峰　　发布时间：2022-05-04 04:09:21　

标签：Python,在线运行

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'<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：

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

投稿

Python在线运行代码助手

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