动态添加属性

  1. class Article(object):
  2.     def __init__(self, **kwargs):
  3.         for k, v in kwargs.items():
  4.             setattr(self, k, v)
  6. article = Article(pmid='1', title='hello world')
  7. article.pmid     # '1'
  8. article.title    # 'hellow world'

动态添加方法

functools.partialmethod 需要Python3.4+

  1. import functools
  4. class Request(object):
  5.     def __init__(self):
  6.         print('>>> init ...')
  9. def func(self, method, url):
  10.     print('>>> {} for url: {}'.format(method.upper(), url))
  13. for method in ['get', 'post', 'put', 'delete', 'head']:
  14.     setattr(Request, method, functools.partialmethod(func, method))

or

  1. import functools
  4. def url_handler(self, method, url):
  5.     print('>>> {} for url: {}'.format(method.upper(), url)) 
  8. class Request(object):
  9.     """dynamically add request method
  11.         examples:
  12.         --------
  13.         >>> r = Request()
  14.         >>> r.get('www.baidu.com')
  15.     """
  16.     methods = ['get', 'post', 'put', 'delete', 'head']
  17.     def __init__(self):
  18.         for method in self.methods:
  19.             setattr(Request, method, functools.partialmethod(url_handler, method))
  22. r = Request()
  23. help(r)
  24. r.get('www.baidu.com')
  25. r.delete('www.baidu.com')

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