how to sort a Dictionary in list?

I had Question in python
Imagine a list with dictionaries in it
how can we sort it by a value in dictionary ?

Imagine this list :

lst = [
    {
        "a" : 3,
        "b" : 2
    },
    {
        "a" : 1,
        "b" : 4
    },
    {
        "a" : 2,
        "b" : 3
    }
]

how can we sort this list by value of "a" in each dictionary (python)
i mean i want this list at the end :

lst = [
    {
        "a" : 1,
        "b" : 4
    },
    {
        "a" : 2,
        "b" : 3
    },
    {
        "a" : 3,
        "b" : 2
    }
]

>Solution :

You could provide a lambda key to sorted:

>>> lst = [
...     {
...         "a" : 3,
...         "b" : 2
...     },
...     {
...         "a" : 1,
...         "b" : 4
...     },
...     {
...         "a" : 2,
...         "b" : 3
...     }
... ]
>>> sorted(lst, key=lambda d: d["a"])
[{'a': 1, 'b': 4}, {'a': 2, 'b': 3}, {'a': 3, 'b': 2}]