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, tempfilefrom urllib import parsefrom wsgiref.simple_server import make_server EXEC = sys.executablePORT = 39093HOST = 'local.liaoxuefeng.com:%d' % PORTTEMP = 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 offpython learning.pypause |
另存为‘运行.bat'
3、把“运行.bat”和“learning.py”放到同一目录下。
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。
5、输入网址对应的网址和端口，整个过程就完成了。
知识点扩展：
Python在线运行代码助手
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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,tempfilefrom urllib import parsefrom wsgiref.simple_server import make_server EXEC = sys.executablePORT = 39093HOST = 'local.liaoxuefeng.com:%d' % PORTTEMP = 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','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','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','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','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() |
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原文链接：https://www.py.cn/faq/python/14023.html
