005 Python代码运行助手

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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：

write-py-code

  • 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

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：

┌────────────────────────────────────────────────────────┐
│Command Prompt                                    - □ x │
├────────────────────────────────────────────────────────┤
│Microsoft Windows [Version 10.0.0]                      │
│(c) 2015 Microsoft Corporation. All rights reserved.    │
│                                                        │
│C:\\Users\\michael\\Downloads> python learning.py          │
│Ready for Python code on port 39093...                  │
│Press Ctrl + C to exit...                               │
│                                                        │
│                                                        │
│                                                        │
│                                                        │
│                                                        │
└────────────────────────────────────────────────────────┘

试试效果

需要支持HTML5的浏览器：

  • IE >= 9
  • Firefox
  • Chrome
  • Sarafi

  • 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：

print(\'Hello, world\')

learning.py

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

r\'\'\'
learning.py

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

Usage:

python3 learning.py
\'\'\'

# check #######################################################################

import sys
from datetime import datetime

CERT_EXPIRES = \'2019-07-07\'

def check_version():
    v = sys.version_info
    if v.major == 3 and v.minor >= 5:
        return
    print(\'Your current python is %d.%d. Please use Python 3.6.\' % (v.major, v.minor))
    exit(1)

def check_cert():
    today = datetime.now().strftime(\'%Y-%m-%d\')
    if today >= CERT_EXPIRES:
        print(\'This learning.py is expired. Please download a newer version.\')
        exit(1)

check_version()
check_cert()

# start server ################################################################

import os, io, json, subprocess, tempfile, ssl
from urllib import parse
from http.server import HTTPServer, BaseHTTPRequestHandler, SimpleHTTPRequestHandler

EXEC = sys.executable
PORT = 39093
TEMP = tempfile.mkdtemp(suffix=\'_py\', prefix=\'learn_python_\')

HTML_INDEX = r\'\'\'
<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>
\'\'\'

class LearningHTTPRequestHandler(BaseHTTPRequestHandler):

    def do_GET(self):
        self.close_connection = True
        if self.path != \'/\':
            return self.send_error(404)
        self._sendHttpHeader(\'text/html\')
        self._sendHttpBody(HTML_INDEX)

    def do_POST(self):
        self.close_connection = True
        if self.path != \'/run\':
            return self.send_error(400)
        print(\'Prepare code...\')
        body = self.rfile.read(int(self.headers[\'Content-length\']))
        qs = parse.parse_qs(body.decode(\'utf-8\'))
        if not \'code\' in qs:
            return self.send_error(400)
        code = qs[\'code\'][0]
        r = dict()
        try:
            fpath = write_py(get_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.\')
        self._sendHttpHeader()
        self._sendHttpBody(r)

    def _sendHttpHeader(self, contentType=\'application/json\'):
        origin = self.headers[\'Origin\'] or \'https://www.liaoxuefeng.com\'
        self.send_response(200)
        self.send_header(\'Content-Type\', contentType)
        self.send_header(\'Access-Control-Allow-Origin\', origin)
        self.send_header(\'Access-Control-Allow-Methods\', \'GET,POST\')
        self.send_header(\'Access-Control-Max-Age\', \'86400\')
        self.end_headers()

    def _sendHttpBody(self, data):
        body = b\'\'
        if isinstance(data, bytes):
            body = data
        elif isinstance(data, str):
            body = data.encode(\'utf-8\', errors=\'ignore\')
        else:
            body = json.dumps(data).encode(\'utf-8\', errors=\'ignore\')
        self.wfile.write(body)

def main():
    certfile = write_cert()
    httpd = HTTPServer((\'127.0.0.1\', PORT), LearningHTTPRequestHandler)
    httpd.socket = ssl.wrap_socket(httpd.socket, certfile=certfile, server_side=True)
    print(\'Ready for Python code on port %d...\' % PORT)
    print(\'Press Ctrl + C to exit...\')
    httpd.serve_forever()

# functions ###################################################################

INDEX = 0

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\')

# certificate #################################################################

def write_cert():
    fpath = os.path.join(TEMP, \'local.liaoxuefeng.com.pem\')
    with open(fpath, \'w\', encoding=\'utf-8\') as f:
        f.write(CERT_DATA)
    return fpath

CERT_DATA = r\'\'\'
-----BEGIN RSA PRIVATE KEY-----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7IEmV6W5aYRoozYyvWQt49EoZNzotBrenzIAESIzRypvbicJhz/hn0Vet7ZWomo+
hwSPmaECgYEA8///xiXb1vE1u0aKSebF7zdzeKZp+/EpTPYxxAy0cR8yaaN65nCs
tHqv8w+NiJ9zYTRoGK9950wgA0q7ZnRMFNZQvYnP/ahqnNoWPtShQERpKfF0tv9Q
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TEHB3vn+psSR3s200k8wupDpH2seRr7S6vyEhmzPfTQeDrJMs4tN1wuNXib6iGO3
4A82NLIjuNhLJAEfgAJCEqQLRAnFX/jJmQTrQoc2lWY7aDRh8J1XkgkUd/Mv0VQj
E5LnUocGR9tAyDtv9K33vZ0CgYB+WOHtgw/zGf2g1m1+9TgjQwluNMVugvxz3/dC
UJ7Yf7uBbJjiZBHh1t1KAV50TKnA2zluytdRW8WCqDEQpX2DQbkQ4v8b+HjQrVMV
bBqbRkTZY/NeIz1z8WKhJ0v8CdBcDl1d8OOuX5hvXLdfUzdJJUvS0AuAoumqbUHT
CZByrQKBgQDJGSxkQz610Nq1S4n9TL67zPV4aH9CwwzCHDslc87jSKdyEtaG1Mm1
vwImgZTyTQQz/ApEzZciWcTPpbYQLaGBRLie84OdkmWU8ENvui3Li60qb6Ukn7rm
vHqtNse0HUK1C5ianeVhC23Pdbo2XUn/RglH4PuuMulNXj/nuVqpzA==
-----END RSA PRIVATE KEY-----

-----BEGIN CERTIFICATE-----
MIIFlzCCBH+gAwIBAgIQDnY5H0NC4bAIvIdkO1PbfDANBgkqhkiG9w0BAQsFADBy
MQswCQYDVQQGEwJDTjElMCMGA1UEChMcVHJ1c3RBc2lhIFRlY2hub2xvZ2llcywg
SW5jLjEdMBsGA1UECxMURG9tYWluIFZhbGlkYXRlZCBTU0wxHTAbBgNVBAMTFFRy
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cRROlQJP6aKj8AWyU44RStiJzqzPkFbVQGhrmZ9dtiupZLeNZQLlWAVYlA==
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIErjCCA5agAwIBAgIQBYAmfwbylVM0jhwYWl7uLjANBgkqhkiG9w0BAQsFADBh
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3
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RmE=
-----END CERTIFICATE-----
\'\'\'

# start main at last ##########################################################

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

 

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