## Simple Ways to Use Python's Counter (from Collections)

Counter, A counting algorithm. Python provide a brilliant way to deal with counting. So first import our counter

```from collections import Counter
```

Now let's consider a example string

```s='abmvakdjvabvkasvb'
```

Done! Now Watch the magic

```print Counter(s)
```

Output:

```Counter({'a': 4, 'v': 4, 'b': 3, 'k': 2, 'd': 1, 'j': 1, 'm': 1, 's': 1})
```

So `Counter` is class defined in python collections module, which takes input (`hashable objects` like string, list etc) and return a `dictionary` where elements (from hashable objects) are stored as `dictionary keys ` and their counts are stored as` dictionary values`.

Now let's check another use of `Counter`.

```c=Counter('abmvakdjvabvkasvb')
for letter in s:
print '%s : %d ' %(letter, c[letter])
```

Output

```a : 4
b : 3
m : 1
v : 4
a : 4
k : 2
d : 1
j : 1
v : 4
a : 4
b : 3
v : 4
k : 2
a : 4
s : 1
v : 4
b : 3
```

Python also provide a method to print out the most common elements present in the input.Use `most_common()` to produce a sequence of the n most frequently encountered input values and their respective counts.

```c.most_common(3)
```

Output:

```[('a', 4), ('v', 4), ('b', 3)]
```

Done!

More about Counter can be learned from Official documentation. If there is anything then Corrections and suggestions are welcome in the comments.