Using __getitem__ in operator overloading with python -

how can using __getitem__?

class computers:      def __init__(self, processor, ram, hard_drive):         self.processor = processor          self.ram = ram         self.hard_drive = hard_drive 

what want able is

c = computers('2.4 ghz','4 gb', '500gb') 

c['h'] return 500gb

and c['p','r','h'] return ('2.4 ghz','4 gb', '500gb')

yes, can. in both cases, __getitem__ method called 1 object. in first case, passed single string object, in second, passed tuple containing 3 strings.

handle both cases:

def __getitem__(self, item):     attrmap = {'p': 'processor', 'r': 'ram', 'h': 'hard_drive'}     if isinstance(item, str):         return getattr(self, attrmap[item])     # assume sequence     return tuple(getattr(self, attrmap[i]) in item) 

demo, including error handling:

>>> c = computers('2.4 ghz','4 gb', '500gb') >>> c['h'] '500gb' >>> c['p', 'r', 'h'] ('2.4 ghz', '4 gb', '500gb') >>> c['f'] traceback (most recent call last):   file "<stdin>", line 1, in <module>   file "<stdin>", line 9, in __getitem__ keyerror: 'f' >>> c['p', 'r', 'f'] traceback (most recent call last):   file "<stdin>", line 1, in <module>   file "<stdin>", line 11, in __getitem__   file "<stdin>", line 11, in <genexpr> keyerror: 'f'