Author: Aleksandr Chirkov
Feb. 18, 2014, 6:47 p.m.

object.__call__(self[, args...])

Called when the instance is “called” as a function; if this method is defined, x(arg1, arg2, ...) is a shorthand for x.__call__(arg1, arg2,...).

class Foo():
    pass
     
>>> x  = Foo()
>>> x()
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/IPython/core/interactiveshell.py", line 2731, in run_code
    exec code_obj in self.user_global_ns, self.user_ns
  File "<ipython-input-168-7354d77c61ac>", line 1, in <module>
    x()
AttributeError: Foo instance has no __call__ method

class Foo():
    def __call__(self):
        print 'test'
      
>>> x  = Foo()
>>> x()
test

 

 

python
magicmethods
call
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