python如何使用代码运行助手

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++。

#!/usr/bin/envpython3
#-*-coding:utf-8-*-
r'''
learning.py
APython3tutorialfromhttp://www.liaoxuefeng.com
Usage:
python3learning.py
'''
importsys
defcheck_version():
v=sys.version_info
ifv.major==3andv.minor =4:
returnTrue
print('Yourcurrentpythonis%d.%d.PleaseusePython3.4.'%(v.major,v.minor))
returnFalse
ifnotcheck_version():
exit(1)
importos,io,json,subprocess,tempfile
fromurllibimportparse
fromwsgiref.simple_serverimportmake_server
EXEC=sys.executable
PORT=39093
HOST='local.liaoxuefeng.com:%d'%PORT
TEMP=tempfile.mkdtemp(suffix='_py',prefix='learn_python_')
INDEX=0
defmain():
httpd=make_server('127.0.0.1',PORT,application)
print('ReadyforPythoncodeonport%d...'%PORT)
httpd.serve_forever()
defget_name():
globalINDEX
INDEX=INDEX+1
return'test_%d'%INDEX
defwrite_py(name,code):
fpath=os.path.join(TEMP,'%s.py'%name)
withopen(fpath,'w',encoding='utf-8')asf:
f.write(code)
print('Codewroteto:%s'%fpath)
returnfpath
defdecode(s):
try:
returns.decode('utf-8')
exceptUnicodeDecodeError:
returns.decode('gbk')
defapplication(environ,start_response):
host=environ.get('HTTP_HOST')
method=environ.get('REQUEST_METHOD')
path=environ.get('PATH_INFO')
ifmethod=='GET'andpath=='/':
start_response('200OK',[('Content-Type','text/html')])
return[b'<html <head <title LearningPython</title </head <body <formmethod="post"action="/run" 
<textareaname="code"style="width:90%;height:600px" </textarea <p <buttontype="submit" Run</button 
</p </form </body </html ']
ifmethod=='GET'andpath=='/env':
start_response('200OK',[('Content-Type','text/html')])
L=[b'<html <head <title ENV</title </head <body ']
fork,vinenviron.items():
p='<p %s=%s'%(k,str(v))
L.append(p.encode('utf-8'))
L.append(b'</html ')
returnL
ifhost!=HOSTormethod!='POST'orpath!='/run'ornotenviron.get('CONTENT_TYPE','').lower().
startswith('application/x-www-form-urlencoded'):
start_response('400BadRequest',[('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'))
ifnot'code'inqs:
start_response('400BadRequest',[('Content-Type','application/json')])
return[b'{"error":"invalid_params"}']
name=qs['name'][0]if'name'inqselseget_name()
code=qs['code'][0]
headers=[('Content-Type','application/json')]
origin=environ.get('HTTP_ORIGIN','')
iforigin.find('.liaoxuefeng.com')==-1:
start_response('400BadRequest',[('Content-Type','application/json')])
return[b'{"error":"invalid_origin"}']
headers.append(('Access-Control-Allow-Origin',origin))
start_response('200OK',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))
exceptsubprocess.CalledProcessErrorase:
r=dict(error='Exception',output=decode(e.output))
exceptsubprocess.TimeoutExpiredase:
r=dict(error='Timeout',output='执行超时')
exceptsubprocess.CalledProcessErrorase:
r=dict(error='Error',output='执行错误')
print('Executedone.')
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：

@echooff
pythonlearning.py
pause

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

#!/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','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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