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    python代码运行助手如何使用

    爱喝马黛茶的安东尼爱喝马黛茶的安东尼2019-11-08 14:29:25原创4190

    python代码运行助手是能在网页上运行python语言的工具。因为python的运行环境在很多教程里都是用dos的,黑乎乎的界面看的有点简陋,所以出了这python代码运行助手,作为ide。

    实际上,python代码运行助手界面只能算及格分,如果要找ide,推荐使用jupyter。jupyter被集成到ANACONDA里,只要安装了anacoda就能使用了。

    1、要打开这运行助手首先要下载一个learning.py,如果找不到可以复制如下代码另存为“learning.py”,编辑器用sublime、或者notepad++。

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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()

    2、再用一个记事本写如下的代码:

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    @echo off

    python learning.py

    pause

    另存为‘运行.bat’

    3、把“运行.bat”和“learning.py”放到同一目录下。

    7d024039dbcb32cd8d52d73d02e5e33.png

    4、双击运行“运行.bat",之后会弹出黑色的dos窗口,这个窗口不要关闭。

    8c87d58fc7bfbd2971255f157072a57.png

    5、输入网址对应的网址和端口,整个过程就完成了。

    c04c480f423bc881ff3e5b2dd9e8c3c.png

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