similar keys in dictionary in python by R4R Team

- In dictionary of python contains two things i.e. keys and values.
- It is possible to have the multiple values for one key in dictionary but it is not possible to put multiple keys for one value.
- When we try to make multiple similar keys for different values then it gives a warning like dictionary key 'keyname' repeated for different values. but it not give any error in program.

Example

d={1:"one",1:"two"}
- here we have a two keys with same name so dictionary bydefault choose the last key and their values.


program-

d={1:"one",1:"two"}
print(d,d[1])

d={1:"one",1:"two",1:"three"}
print(d,d[1])

d={1:1,1:2,1:3}
print(d,d[1])

output-

{1: 'two'} two
{1: 'three'} three
{1: 3} 3

-In this program, we have a different example of dictionary, one of them are {1:"one",1:"two"}, here we have a two keys of same name '1', so dictionary contain only one key and choose the last one that's by dictionary become {1:"two"}, similary other dictionary works for same keys.

- If we want to store different values for one type of key or want to print above dictionary like this {1:['one','two']} then instead of doing this, do this thing in following way-


program-

l=["one","two"]
d={1:l}
print(d)

output-

{1: ['one', 'two']}