Convert items in the Python list to dictionary

In [2]: a=[Seoul, Seoul, Gyeonggi, Gyeonggi, Incheon, Incheon]
In [3]: dict(zip(range(len(a)), a))
Out[3]: {0: 'Seoul', 1: 'Seoul', 2: 'Gyeonggi', 3: 'Gyeonggi', 4: 'Incheon', 5: 'Incheon'}