Python multimap

[brad]

castironpi wrote:

> I don't understand what a multimap does that a map of lists doesn't do.

It counts both keys individually as separate keys. The Python workaround 
does not... see examples... notice the key(s) that are '4'

Python output (using the k = [] idea):

Key: 4 Value: [[13, 'Visa'], [16, 'Visa']]
Key: 51 Value: [16, 'MC']
Key: 65 Value: [16, 'Discover']
Key: 2131 Value: [15, 'JCB']
Key: 300 Value: [14, 'Diners CB']
Key: 301 Value: [14, 'Diners CB']
Key: 302 Value: [14, 'Diners CB']
Key: 303 Value: [14, 'Diners CB']
Key: 304 Value: [14, 'Diners CB']
Key: 305 Value: [14, 'Diners CB']
Key: 35 Value: [16, 'JCB']
Key: 34 Value: [15, 'Amex']
Key: 55 Value: [16, 'MC or Diners US and CA']
Key: 36 Value: [14, 'Diners Intl']
Key: 37 Value: [15, 'Amex']
Key: 1800 Value: [15, 'JCB']
Key: 54 Value: [16, 'MC']
Key: 6011 Value: [16, 'Discover']
Key: 52 Value: [16, 'MC']
Key: 53 Value: [16, 'MC']
Key: 385 Value: [14, 'Diners CB']
21 is the size of the dict

A C++ multimap

Key: 1800 Value: JCB 15
Key: 2131 Value: JCB 15
Key: 300 Value: Diners_Club 14
Key: 301 Value: Diners_Club 14
Key: 302 Value: Diners_Club 14
Key: 303 Value: Diners_Club 14
Key: 304 Value: Diners_Club 14
Key: 305 Value: Diners_Club 14
Key: 34 Value: American_Express 15
Key: 35 Value: JCB 16
Key: 36 Value: Diners_Club 14
Key: 37 Value: American_Express 15
Key: 385 Value: Diners_Club 14
Key: 4 Value: Visa 16
Key: 4 Value: Visa 13
Key: 51 Value: MasterCard 16
Key: 52 Value: MasterCard 16
Key: 53 Value: MasterCard 16
Key: 54 Value: MasterCard 16
Key: 55 Value: MasterCard 16
Key: 6011 Value: Discover 16
Key: 65 Value: Discover 16
22 is the size of the multimap