multiple values per key python dictionary code example
Example 1: how to have multiple values to a key in dict in python
from collections import defaultdict
data = [(2010, 2), (2009, 4), (1989, 8), (2009, 7)]
d = defaultdict(list)
print (d) # output --> defaultdict(<type 'list'>, {})
for year, month in data:
d[year].append(month)
print (d) # output --> defaultdict(<type 'list'>, {2009: [4, 7], 2010: [2], 1989: [8]})
Example 2: how to use multiple keys for single value in dictionary python
#Python Dictionary only contain one key : one value pair.
#You can surely have multiple keys having same value
#Example :-
dict = {'a':'value1', 'b':'value2', 'c':'value 3'}
#In above we have a and b key having same values