eval(WsgiApplication)

[gert]

I would like to read the following from a text file

from json import loads
from gert.db import Db
def application(environ, response):
    v = loads(environ['wsgi.input'].read(int(environ
['CONTENT_LENGTH'])).decode('utf-8'))
    db = Db()
    db.execute('UPDATE votes SET count=count+1 WHERE vid=?',(v
['vid'],))
    db.execute('SELECT * FROM votes')
    j = '{"rec":'+db.json()+',\n'
    j+= ' "des":'+db.jdes()+'}'
    j = j.encode('utf-8')
    response('200 OK', [('Content-type', 'text/
javascript;charset=utf-8'), ('Content-Length', str(len(j)))])
    return [j]

execute it, and wrap a new function name around it for example

def wrapper(environ, response):
     exec(file)
     return application(environ, response)

How do I do this in python3?