Python入门学习的流程分享

In [42]: [(x,y) for x in range(3) for y in range(3)]
Out[42]: [(0, 0), (0, 1), (0, 2), (1, 0), (1, 1), (1, 2), (2, 0), (2, 1), (2, 2)]
In [43]: [[x,y] for x in range(2) for y in range(2)]
Out[43]: [[0, 0], [0, 1], [1, 0], [1, 1]]

import web
 
urls = ('/hello', 'hello',
       )
 
class hello(object):
  def GET(self):
    return 'hello world'
 
if __name__ == "__main__":
  app = web.application(urls, globals())
  app.run()