[root@python 530]# cat attr.py
#!/usr/bin/env python

def kel():
  print 'this is a kel function'


def smile():
  print 'this is a smile function'

if __name__ == '__main__':
  kel()
  smile()

> import attr
> k = getattr(attr,'kel')
> k()
this is a kel function
> s = getattr(attr,'smile')
> s()
this is a smile function
> e = getattr(attr,'errors')
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'errors'

> import attr
> d = {'kel':attr.kel,'smile':attr.smile}
> d['kel']()
this is a kel function
> d['smile']()
this is a smile function